67 research outputs found
FIGURE 3. Typhonium khonkaenensis. A in A new species and a new record of Typhonium (Araceae) from southern Vietnam
No full textFIGURE 3. Typhonium khonkaenensis. A. The species in habitat. B. Whole plant. C. Different forms of leaf blade. D. Inflorescence. E. Spathe. F. Part of spadix showing male, sterile and female zones. G. Spathe, inside. H. Stamens. I. Female flowers. J. Fruits. K. Seeds.Published as part of Van, Hong Thien, Le, Van Son, Nguyen-Phi, Nga, Nguyen, Quoc Dat, Nguyen, Tran Quoc Trung, Nguyen, Hieu Cuong & Luu, Hong Truong, 2021, A new species and a new record of Typhonium (Araceae) from southern Vietnam, pp. 201-208 in Phytotaxa 527 (3) on page 205, DOI: 10.11646/phytotaxa.527.3.4, http://zenodo.org/record/575136
Metaphire mangophila Nguyen 2011, comb. nov.
No full textMetaphire mangophila (Nguyen, 2011) comb. nov. Pheretima mangophila Nguyen 2011b: 24, fig. 2. Pheretima sp.2 — Nguyen T.T. & Tran 2008: 61; Nguyen et al. 2011: 1025. Pheretima mangophila— Nguyen et al. 2012: 146; Nguyen 2013: 58; Nguyen 2014: 110. Type locality. Vietnam (An Giang: Cho Moi). Type material. CTU (EW.h017), Vietnam. Examined material. 10 C (CTU-EW.012.01) plantation, Thien Ton, Vinh Cuu Distr., Dong Nai Prov., 13/09/ 2012, coll. Duong Chi Trong; 5 C (CTU-EW.012.02) fruit tree gardens, Phu Ngoc, Dinh Quan Distr., Dong Nai Prov., 14/10/2013, coll. Le Van Nhan. Records from Vietnam. Tay Ninh (Ba Den Mt.); Dong Nai (Vinh Cuu; Xuan Loc; Dinh Quan); Dong Thap (Cao Lanh); Can Tho (Vinh Thanh); Kien Giang (Hon Dat; Kien Luong; Ha Tien, An Son Isl.); An Giang (Cho Moi: Duyen Isl.; Chau Doc; Tinh Bien; Tri Ton); Tra Vinh (Chau Thanh) (Nguyen 2011b; Nguyen 2014). Distribution. Only known from Vietnam. Vietnamese name. Giun ưa đất xoài.Published as part of Nguyen, Tung T., Nguyen, Anh D., Tran, Binh T. T. & Blakemore, Robert J., 2016, A comprehensive checklist of earthworm species and subspecies from Vietnam (Annelida: Clitellata: Oligochaeta: Almidae, Eudrilidae, Glossoscolecidae, Lumbricidae, Megascolecidae, Moniligastridae, Ocnerodrilidae, Octochaetidae), pp. 1-92 in Zootaxa 4140 (1) on page 61, DOI: 10.11646/zootaxa.4140.1.1, http://zenodo.org/record/25650
How Trustworthy are Performance Evaluations for Basic Vision Tasks?
No full textThis paper examines performance evaluation criteria for basic vision tasks
involving sets of objects namely, object detection, instance-level segmentation
and multi-object tracking. The rankings of algorithms by an existing criterion
can fluctuate with different choices of parameters, e.g. Intersection over
Union (IoU) threshold, making their evaluations unreliable. More importantly,
there is no means to verify whether we can trust the evaluations of a
criterion. This work suggests a notion of trustworthiness for performance
criteria, which requires (i) robustness to parameters for reliability, (ii)
contextual meaningfulness in sanity tests, and (iii) consistency with
mathematical requirements such as the metric properties. We observe that these
requirements were overlooked by many widely-used criteria, and explore
alternative criteria using metrics for sets of shapes. We also assess all these
criteria based on the suggested requirements for trustworthiness.Comment: Tran Thien Dat Nguyen and Hamid Rezatofighi have contributed equall
FIGURE 2 in Phylogeny of the Cyrtodactylus irregularis species complex (Squamata: Gekkonidae) from Vietnam with the description of two new species
No full textFIGURE 2. Bayesian inference trees for the Cyrtodactylus irregularis species complex from COI (left) and RPL35 (right) data. Symbols at the nodes are Bayesian posterior probabilities (BPP), and bootstrap (BS) proportions from maximum likelihood and maximum parsimony, respectively. Details of taxon names are in Figure 1 and Table 1.Published as part of Nguyen, Sang Ngoc, Le, Thanh-Ngan Thi, Tran, Thi Anh Dao, Orlov, Nikolai L., Lathrop, Amy, Macculloch, Ross D., Le, Thuy-Duong Thi, Jin, Jie-Qiong, Nguyen, Luan Thanh, Nguyen, Tao Thien, Hoang, Dat Duc & Che, Jing, 2013, Phylogeny of the Cyrtodactylus irregularis species complex (Squamata: Gekkonidae) from Vietnam with the description of two new species, pp. 399-414 in Zootaxa 3737 (4) on page 405, DOI: 10.11646/zootaxa.3737.4.4, http://zenodo.org/record/21601
Typhonium vietnamense Luu, Nguyen-Phi & H. T. Van 2021, sp. nov.
No full textTyphonium vietnamense Luu, Nguyen-Phi & H.T.Van, sp. nov. (Figs. 1, 2) The new species is most morphologically similar to Typhonium varians Hett. & Sookchaloem in Hetterscheid et al. (2001: 51) in variant shape of leaves, triangular ovate spathe limb and general florescence structure but differs from the latter in having plain green (vs. variegated) leaves, underground (vs. above ground) flowering spathe tube, abaxially reddish purple to greenish grey, brownish mottled and ascending (vs. dark green flushed with dirty brown and horizontal) spathe limb, erect (vs. ascending) spadix, bright yellow staminodes curved downwards at their tips only (vs. pale yellow staminodes curved upwards or downwards over their entire length), ovoid (vs. spathulate to pyriform) fruits and generally smaller floral parts (3.5–4.5 vs. 8.0– 13.5 cm long spadix, 3.5–5.0 × 2.0–2.5 vs. 7–14 × 4.0– 7.5 cm spathe limb, 2.0–3.5 × 0.4–0.5 vs. 4.5–9.0 × 0.6–1.0 cm spadix appendix). Type:— VIETNAM. Ba Ria - Vung Tau Province: Binh Chau - Phuoc Buu Nature Reserve, about 107 o 30’52’’E, 10 o 36’17’’N, 30 m elevation, 05 August 2015, Le Van Son, Nguyen Phi Nga & Van Hong Thien H . T. Van 115 (holotype SGN!, isotypes PHH!, VNMN!). Herb seasonally dormant; rhizome tuberous, subglobose to ellipsoid, underground, 1.0– 1.5 cm long, ca. 1 cm in diameter, producing many thick roots. Leaves 4–5. Petiole smooth, slender, 7–15 cm long, 2–3 mm in diameter, white to grey with brownish mottled at base, green towards the apex. Leaf blades entire or pedatisect, green above, pale green beneath; entire blades linear, deltoid to lanceolate, 6–10 cm long, 2–8 cm wide, with acuminate to obtuse apex; pedatisect blades with 3 to 5 linear to lanceolate segments (up to 15 cm long, 2.0– 4.5 cm wide). Inflorescence, solitary (rarely 2), slightly foetid smelling; peduncle underground, elongated in fruiting, white, 1.5–2.0 cm long, ca. 3–5 mm in diameter; spathe 4.5–6.0 cm long; spathe tube underground, separated from the limb by a constriction, ovoid or ellipsoid, 1.3–1.7 cm long, 9–10 mm wide, outside white with brownish dots, inside white to pale pink; spathe limb triangular ovate, 3.5–5.0 cm long, 2.0– 2.5 cm wide, outside reddish purple to greenish grey, brownish mottled, inside dark purple to reddish purple; spadix little shorter than spathe, sessile, erect; female zone conical, 2–3 mm high, ca. 5 mm in diameter at base, with 6–7 rows of crowded pistils; ovary obovoid or slightly cylindrical, 1 mm high, 0.7 mm in diameter, translucent white with brownish dots at apex, 1-locular, with 1 basal ovule; style very short; stigma disciform, thick, 0.6 mm in diameter, 0.3 mm high, blackish purple to pink, papillate; sterile zone contiguously female zone, 8–10 mm long, lower part covered with 3–4 rows of staminodes, upper part naked; staminodes bright yellow, subulate, 2–3 mm long, ca. 0.5 mm in diameter, ascending forming an obtuse angle with the spadix axis, slightly curved downward, weakly papillose; male zone cylindrical, 6–10 mm long, 3.5–5.0 mm in diameter; stamens densely arranged, pale yellow to pink; thecae opening by elongate slit; appendix shortly stipitate, outside brownish purple to reddish, inside light yellow, elongate conical, 2.0– 3.5 cm long, 4–5 mm in diameter at base, with acute apex and truncate base. Infructescence obconical with spathe tube remaining and above the ground; fruits obconical, pinkish white with pale pinkish spots, 4–7 mm long, 2–3 mm wide, 1-seeded; seed obovate (or having constriction), at first creamy white, light brown when mature, 3.0– 3.5 mm long, 2.0– 2.5 mm wide. Etymology: —The species is named after Vietnam, the country of origin. Vietnamese name: —Bán hạ Việt Nam. Ecology: —The new species grows in clumps on open sandy soil in sparse dipterocarp-dominated forests. Different leaf forms were found in plant individuals or clumps. Flowering was seen in May to June and fruiting in July to August. The plant becomes dormant in November to April next year. Additional specimen examined (paratype):— VIETNAM. Dak Lak Province: Yok Don National Park, 01 October 2015, Nguyen Le Xuan Bach & Van Hong Thien H . T.Van 126 (SGN!). Distribution: —Ba Ria - Vung Tau Province and Dak Lak Province, southern Vietnam. Proposed IUCN conservation status: — Data Deficient (DD) (IUCN Standards and Petitions Subcommittee 2017). Typhonium vietnamense has so far been found in two protected areas (Binh Chau - Phuoc Buu Nature Reserve, Ba Ria - Vung Tau Province and Yok Don National Park, Dak Lak Province) in southern Vietnam. Although its habitat in Binh Chau - Phuoc Buu Nature Reserve is planned to be converted into a resort in the near future, the species is likely to occur in adjacent similar sparse dipterocarp-dominated forests in Cambodia. Further survey work is necessary before a definitive conservation assessment can be made. Notes: —The new species is morphologically closest to Typhonium varians but they have a number of differences as expressed in the diagnosis. Several other Typhonium species share with T. vietnamense a similar spadix structure, especially in the shape of spadix appendix and staminodes, but these are easily distinguishable: T. conchiforme Hetterscheid & Galloway (2006: 80) by deeply sagittate leaf blades, deeply cymbiform, strongly concave spathe limb and off-white or pale yellow staminodes; T. sagittariifolium Gagnepain (1942b: 11) by deeply trilobed sagittate leaf blades, erect elongate triangular spathe limb, longer spadix appendix (8 mm), and longer (3–5 mm) and recurved staminodes; and Typhonium viridispathum Galloway & Sinhabaedya (2012: 61) by bright green spathe with elongate triangular limb, off-white spadix appendix, basally white and apically pale green ovaries and white staminodes.Published as part of Van, Hong Thien, Le, Van Son, Nguyen-Phi, Nga, Nguyen, Quoc Dat, Nguyen, Tran Quoc Trung, Nguyen, Hieu Cuong & Luu, Hong Truong, 2021, A new species and a new record of Typhonium (Araceae) from southern Vietnam, pp. 201-208 in Phytotaxa 527 (3) on pages 201-204, DOI: 10.11646/phytotaxa.527.3.4, http://zenodo.org/record/575136
Bayesian Multi-Object Tracking for Cell Microscopy
No full textCell tracking is an essential tool for studying how cells behave and divide under different conditions. This thesis proposes new approaches to track cells and their lineages using random finite set, which allows the tracking errors to be statistically quantified. Additionally, this thesis also explores criteria to rank performance of basic vision task algorithms (e.g., object detection, instance-level segmentation, and tracking), which have not been received proportionate attention from the scientific community
Metaphire houlleti Perrier 1872
No full textMetaphire houlleti (Perrier, 1872) Perichaeta houlleti Perrier, 1872: 99, Plate 2, Figs 31–44. Pheretima houlleti— Gates 1939: 94; 1972: 190; Pham 1995c: 89; Nakamura 1999: 42; Thai 2000a: 309; Huynh 2005a: 109; Huynh 2005b: 20; Nguyen et al. 2010: 114; Pham 2010: 63; Nguyen T.T. & Tran 2008: 61; Nguyen & Nguyen 2010: 123; Nguyen & Huynh 2011: 1018; Nguyen et al. 2011: 1025; Nguyen et al. 2012: 146; Nguyen 2013: 49; Nguyen 2014: 109. Metaphire houlleti— Sims & Easton 1972: 238; Blakemore 2007a: 48; Blakemore 2008b. Perichaeta campanulata Rosa, 1890b: 115. Pheretima campanulata— Gates 1930: 307, 311; 1939: 83; Thai et al. 2004: 759; Pham 1995c: 89; Nakamura 1999: 41; Thai 2000a: 308; Huynh 2005a: 112; Nguyen V.T. & Tran 2008: 184; Pham 2010: 63; Nguyen & Nguyen 2010: 123; Nguyen & Huynh 2011: 1018; Nguyen et al. 2011: 1025; Nguyen et al., 2012: 146. Metaphire campanulata— Sims & Easton 1972; 238; Blakemore 2007a: 48, treated as synonym of Metaphire houlleti (Perrier, 1872). Type locality. India (Calcutta). Type material. MHNH, France. Examined material. 25 C and 18 A (CTU-EW.006.06) natural forest, Cat Tien NP, Tan Phu, Dong Nai, 13/ 10/2013, coll. Le Van Nhan; 22 C (CTU-EW.006.02) Phung Hiep, Can Tho, 9/10/2009, coll. Ngo Thi Ngan; 13C, 4 A (SORC-V.129.01) deciduous forest, Ealop, Dak Lak, 18/10/1989, coll. Huynh Thi Kim Hoi; 15 C and 5 A (CTU-EW.018.01) Nam Cat Tien, Tan Phu, Dong Nai, 13/10/2013, coll. Le Van Nhan; 11 C (CTU-EW.018.05) Cu Lao Duyen, Cho Moi, An Giang, 9/2009, coll. Ho Minh Thuan. Records from Vietnam. Son La (Moc Chau); Dien Bien (Tuan Giao; Dien Bien); Nghe An (Que Phong); Quang Tri (Huong Hoa); Thua Thien Hue (Huong Tra; Hue; Huong Thuy; Nam Dong); Da Nang (Hoa Vang; Son Tra; Ba Na NP); Quang Nam (Dien Ban; Hiep Duc; Tam Ky; Tien Phuoc; Phuoc Son; Tra My); Quang Ngai (Son Ha); Kon Tum (Dak Glei; Sa Thay); Binh Dinh (Tuy Phuoc; An Nhon); Gia Lai (An Khe; Duc Co); Phu Yen (Tuy An); Dak Lak (Ea Sup; Yok Don NP; Buon Me Thuot); Dak Nong (Ta Dung Mts); Binh Thuan (Tanh Linh); Lam Dong (Duc Trong; Da Lat); Khanh Hoa (Nha Trang); Dong Nai (Vinh Cuu; Xuan Loc; Tan Phu; Dinh Quan; Trang Bom; Thong Nhat; Nhon Trach; Long Thanh; Cam My); Tay Ninh (Ba Den Mt.); Dong Thap (Thanh Binh; Lap Vo; Cao Lanh; Cu Lao Tan Long); Hau Giang (Phung Hiep; Nga Bay); Long An (Vinh Hung; Thanh Hoa); Kien Giang (Phu Quoc Isl.); Tien Giang (Cai Be; Cai Lay; Chau Thanh); Vinh Long (Long Ho); An Giang (Cho Moi: Cu Lao My Hiep; Chau Doc; Tinh Bien; Tri Ton); Kien Giang (Kien Luong; Hon Tre Isl.; Lai Son Isl.; An Son Isl.; Hon Dat); Hau Giang (Phung Hiep); Can Tho; Ben Tre (Binh Dai); Tra Vinh (Duyen Hai; Hoa Minh Isl.; Cau Ke); Soc Trang (Long Phu; Tran De; Ke Sach; Chau Thanh); Bac Lieu (Hoa Binh); Ca Mau (Dam Doi; Cai Nuoc; Ca Mau City) (Do 1994; Nguyen 1994; Pham 1995c, 2010; Huynh 2005a; Thai et al. 2004; Nguyen V.T. & Tran 2008; Nguyen & Nguyen 2010; Nguyen & Huynh 2011; Nguyen et al. 2010; Nguyen et al. 2011; Nguyen et al. 2012). Distribution. Cosmopolitan species, occurring in India, Thailand, Cambodia, Laos, Myanmar, Taiwan, Singapore, China, Australia, USA (Gate 1939, 1972; Easton 1982; Thai & Do 1989; Thai & Samphon 1991; Shen & Yeo 2005; Shen et al. 200 5). Vietnamese name. Giun houllet. Remarks. Gates (1939) noted that the original home of the species is probably somewhere a region comprising eastern Myanmar and Thailand. The species has been known in Vietnam as two different species, Pheretima houlleti and Pheretima campanulata.Published as part of Nguyen, Tung T., Nguyen, Anh D., Tran, Binh T. T. & Blakemore, Robert J., 2016, A comprehensive checklist of earthworm species and subspecies from Vietnam (Annelida: Clitellata: Oligochaeta: Almidae, Eudrilidae, Glossoscolecidae, Lumbricidae, Megascolecidae, Moniligastridae, Ocnerodrilidae, Octochaetidae), pp. 1-92 in Zootaxa 4140 (1) on pages 58-59, DOI: 10.11646/zootaxa.4140.1.1, http://zenodo.org/record/25650
Miguelia shenzhenica Aver. A. Flowering 2023, comb. nov.
No full textMiguelia shenzhenica (Z.J.Liu & S.C.Chen) Aver., comb. nov. (Fig. 10) ≡ Vanilla shenzhenica Z.J.Liu & S.C.Chen (2007: 301), Chen et al. (2009: 168), Barretto et al. (2011: 97), Zhou et al. (2016: 136). Type: — CHINA. Guangdong: Shenzhen, Longgang, Meishajian, alt. 300 m, on tree trunk and rock along a valley, 22 February 2005, Z. J. Liu 3025 (holotype NOCC). Ecology and phenology:—Creeping succulent herbaceous lithophytic or epiphytic vine. Primary and secondary lowland evergreen broad-leaved forests on shale and granite. Very rare. Flowers in March. Distribution:— VIETNAM, Thua Thien Hue Province (Phu Loc and Nam Dong districts within the territory of Bach Ma National Park), Da Nang City Area (Ba Na Mountain). SE China. Conservation status:—Only two locations of this easily recognizable species have been discovered in Vietnam untill now. They are located in the lowland areas of Bach Ma National Park and Ba Na–Nui Chua Nature Reserve in the central part of the country. Taking into consideration the high recreation pressure and vigorously increasing tourism activity in both areas, the species meets the following formal Red List IUCN (2022) criteria: observed population reduction for 10 years or 3 generation ≥ 80% are not reversible (A2), based on direct observation (a) and observed decline of the area of occupancy, extent of occurrence and habitat quality (c); the area of occurrence <100 km ² (B1) and the area of occupancy <10 km ² (B2), with 1 known population (a) and continuing observed decline of extent of occurrence (bi); the area of occupancy (bii); area, quality of habitat (biii); the number of mature individuals (bv); the number of mature individuals <250, observed, estimated or projected continuing decline in 25% in 3 years or 1 generation (C1) and observed, estimated, projected or inferred continuing decline when the number of mature individuals in each subpopulation (C2(i)) ≤ 50, and % of mature individuals in one subpopulation = 90–100% (C2(ii)); the number of mature individuals <50 (D). These conditions identify the species as nationally Critically Endangered, CR A2a,c; B1a,b(i-iii,v)+2a,b(i-iii,v); C1+2(i,ii); D1. Notes:—This remarkable species is easily recognizable from other species of Miguelia Aver. (2011: 45) by its inflorescence, which regularly bears 4–5 simultaneously opening flowers distinctly larger than in other species of the genus. The plant has some interest in ornamental horticulture. Studied specimen:— VIETNAM, Thua Thien Hue Province, Bach Ma Nation Park, 18 March 2021, Phạm Th ị Thanh D ạt s.n. (LE01090412 https://en.herbariumle.ru/?t=occ&id=79882). VIETNAM, Da Nang City Area, Ba Na - Nui Chua Nature Reserve, Ba Na Mountain, evergreen broad-leaved lowland forest on granite at anelevation of about 500 m a.s.l., common in the area, March 2021, Nguyen Van Canh, s.n .Published as part of Averyanov, Leonid V., Nguyen, Van Canh, Truong, Ba Vuong, Nguyen, Khang Sinh, Nguyen, Cuong Huu, Maisak, Tatiana V., Doan, Nga Thi, Nguyen, Tuan Hoang, Pham, Van The, Dat, Pham Thi Thanh, Thai, Tran Huy, Nguyen, Van Khuong & Trinh, Ngoc Bon, 2023, New orchids in the flora of Vietnam VI (Orchidaceae, tribes Arethuseae, Cymbidieae, Diurideae, Epidendreae, Vandeae, and Vanilleae), pp. 87-110 in Phytotaxa 597 (2) on page 107, DOI: 10.11646/phytotaxa.597.2.1, http://zenodo.org/record/792919
Volume No 04 Issue No 04 (2020)
No full text[1] Hung, Bui Thanh (2020). Assessment of Recruitment Records using Machine Learning Approach. International Journal of Machine Learning and Networked Collaborative Engineering, 4(04) pp 143-151.
doi : https://doi.org/10.30991/IJMLNCE.2020v04i04.001
[2] Bui,Thien Xuan, Bui,Chuyen Van, Nguyen,Lao, Nguyen,Pha Xuan, Huy, Ha Nguyen Cuong (2020). The Ripening of Pineapple Fruits. International Journal of Machine Learning and Networked Collaborative Engineering, 4(04) pp 152-161.
doi : https://doi.org/10.30991/IJMLNCE.2020v04i04.002
[3] Trong,Nguyen Thanh, Kien,Luong Gia, Tran,Thi T. T., Duong,Hieu N., Hoa,Tran Van, Nam,Thoai (2020). Improving the Performance of One-shot Face Recognition by using Data Augmentation. International Journal of Machine Learning and Networked Collaborative Engineering, 4(04) pp 162-170.
doi : https://doi.org/10.30991/IJMLNCE.2020v04i04.003
[4] Hung,Bui Thanh (2020). Vietnamese Voice Classification based on Deep Learning Approach. International Journal of Machine Learning and Networked Collaborative Engineering, 4(04) pp 171-180.
doi : https://doi.org/10.30991/IJMLNCE.2020v04i04.004
[5] Thai, Dang Nguyen Ha, Quang, Dat Nguyen (2020). Compare model multi-input RNN, LSTM and GRU for prediction of irrigation canal\u27s water level in Red river delta, North Vietnam. International Journal of Machine Learning and Networked Collaborative Engineering, 4(04) pp 181-188.
doi : https://doi.org/10.30991/IJMLNCE.2020v04i04.005  
Typhonium Schott 1829
No full textKey to the 19 presently known Vietnamese species of <i>Typhonium</i> <p> Updated from Van <i>et al.</i> (2017).</p> <p> 1. Leaves perfectly trifoliolate........................................................................................................................................... <i>T. thatsonense</i></p> <p>- Not as above.......................................................................................................................................................................................2</p> <p> 2. Sterile interstice of spadix entirely covered with staminodes..................................................................................... <i>T. flagelliforme</i></p> <p>- Only base of sterile interstice of spadix covered with staminodes.....................................................................................................3</p> <p>3. Spathe limb thin, lanceolate, elongate-triangular...............................................................................................................................4</p> <p>- Spathe limb thick, ovate to ovate-triangular.....................................................................................................................................14</p> <p>4. Leaves fully pedate with 5 or 7 leaflets..............................................................................................................................................5</p> <p>- Leaves entire and/or 3-lobed..............................................................................................................................................................8</p> <p> 5. Leaves with 7 leaflets, leaf lobes linear to or linear-lanceolate............................................................................................. <i>T. lineare</i></p> <p>- Leaves with 5 leaflets, leaf lobes ovate, elliptic to elliptic-lanceolate...............................................................................................6</p> <p> 6. Spadix much longer than spathe.................................................................................................................................... <i>T. vermiforme</i></p> <p>- Spadix almost as long as spathe.........................................................................................................................................................7</p> <p> 7. Ovaries obovoid; stigmas light yellow to white; staminodes subulate, with acuminate apices <i>................................... T. dongnaiense</i></p> <p> - Ovaries elongate or lageniform; stigmas red; staminodes elongate-clavate, with dilated and flattened apices........... <i>T. bachmaense</i></p> <p>8. Spadix longer than spathe...................................................................................................................................................................9</p> <p>- Spadix as long as or shorter than spathe...........................................................................................................................................12</p> <p>9. Spathe limb corrugated.....................................................................................................................................................................10</p> <p>- Not as above.....................................................................................................................................................................................11</p> <p> 10. Staminodes folded 180 o apically.............................................................................................................................. <i>T. phuocbinhense</i></p> <p> - Staminodes straight up to parallel to axis...................................................................................................................... <i>T. corrugatum</i></p> <p> 11. Male zone cylindrical, staminodes cylindrical to conical........................................................................................ <i>T. khonkaenensis</i></p> <p> - Male zone subglobose, staminodes clavate..................................................................................................................... <i>T. acetocella</i></p> <p> 12. Leaves entire....................................................................................................................................................................... <i>T. laoticum</i></p> <p>- Leaves incompletely trifoliolate.......................................................................................................................................................13</p> <p> 13. Stigma funnel shaped and lobed............................................................................................................................. <i>T. stigmatilobatum</i></p> <p> - Stigma disciform and unlobed............................................................................................................................................... <i>T. huense</i></p> <p> 14. Spathe limb very strongly circinnately recoiled over the entire length......................................................................... <i>T. circinnatum</i></p> <p>- Not as above.....................................................................................................................................................................................15</p> <p>15. Staminodes <3 mm long..................................................................................................................................................................16</p> <p>- Staminodes> 5 mm long..................................................................................................................................................................17</p> <p> 16. Spathe 14–30 cm long, thecae opening by small pores....................................................................................................... <i>T. hayatae</i></p> <p> - Spathe 4.5–5.0 cm long, thecae opening by elongate slits.............................................................................. <i>T. vietnamense sp. nov.</i></p> <p> 17. Staminodes subulate.............................................................................................................................................................. <i>T</i>. <i>blumei</i></p> <p>- Staminodes filiform..........................................................................................................................................................................18</p> <p> 18. Staminodes curly............................................................................................................................................................. <i>T. trilobatum</i></p> <p> - Staminodes not curly.................................................................................................................................................... <i>T. penicillatum</i></p>Published as part of <i>Van, Hong Thien, Le, Van Son, Nguyen-Phi, Nga, Nguyen, Quoc Dat, Nguyen, Tran Quoc Trung, Nguyen, Hieu Cuong & Luu, Hong Truong, 2021, A new species and a new record of Typhonium (Araceae) from southern Vietnam, pp. 201-208 in Phytotaxa 527 (3)</i> on pages 206-207, DOI: 10.11646/phytotaxa.527.3.4, <a href="http://zenodo.org/record/5751368">http://zenodo.org/record/5751368</a>
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