1,720,975 research outputs found
Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia
No full textRandi, Agusti, Wijedasa, Lahiru S., Thomas, Daniel C. (2022): Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia. Phytotaxa 530 (1): 121-126, DOI: 10.11646/phytotaxa.530.1.1
Three new species, one new record and an updated checklist of Begonia (Begoniaceae) from Kalimantan, Indonesia
No full textRandi, Agusti, Ardi, Wisnu H., Girmansyah, Deden, Sitepu, Bina Swasta, Hughes, Mark (2022): Three new species, one new record and an updated checklist of Begonia (Begoniaceae) from Kalimantan, Indonesia. Phytotaxa 533 (1): 62-72, DOI: 10.11646/phytotaxa.533.1.
Lophopetalum tanahgambut, a new endemic giant tree species from peat swamp forest of Sumatera, Indonesia, with the first pseudoverticillate leaf arrangement in genus Lophopetalum (Celastraceae)
No full textRandi, Agusti, Wijedasa, Lahiru S., Utteridge, Timothy M.A. (2022): Lophopetalum tanahgambut, a new endemic giant tree species from peat swamp forest of Sumatera, Indonesia, with the first pseudoverticillate leaf arrangement in genus Lophopetalum (Celastraceae). Phytotaxa 573 (1): 115-122, DOI: 10.11646/phytotaxa.573.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.573.1.
FIGURE 1. Hanguana sitinurbayai Randi. A–B in Hanguana sitinurbayai (Hanguanaceae), a new species from mossy montane forest of Gunung Nyiut Penrissen, West Kalimantan, Indonesia
No full textFIGURE 1. Hanguana sitinurbayai Randi. A–B. Plant habit in situ. C. Habit of single plant. D. Indumentum on abaxial leaf surface. E–F. Lamina, adaxial and abaxial surface. All photos by A. Randi from type specimen.Published as part of Randi, Agusti, Widodo, R.M. Wiwied & Adirahmanta, Sadtata N., 2023, Hanguana sitinurbayai (Hanguanaceae), a new species from mossy montane forest of Gunung Nyiut Penrissen, West Kalimantan, Indonesia, pp. 231-236 in Phytotaxa 606 (3) on page 232, DOI: 10.11646/phytotaxa.606.3.7, http://zenodo.org/record/820268
FIGURE 2. Disepalum rawagambut. A in Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia
No full textFIGURE 2. Disepalum rawagambut. A. Flower with pedicel (side view). B. Flower (top view). C. Flower (side view). D. Infructescence. E. Carpophore and monocarp. F. Immature monocarp (longitudinal section). G. Mature monocarp (longitudinal section) and seeds. All photos by A. Randi from the holotype (Randi GB-035).Published as part of Randi, Agusti, Wijedasa, Lahiru S. & Thomas, Daniel C., 2022, Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia, pp. 121-126 in Phytotaxa 530 (1) on page 124, DOI: 10.11646/phytotaxa.530.1.14, http://zenodo.org/record/582388
FIGURE 1. Disepalum rawagambut. A in Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia
No full textFIGURE 1. Disepalum rawagambut. A. Trunk and stilt roots on old tree. B. Twig with flowers and infructescence. C. Close-up of twig. D. Adaxial surface (upper) and abaxial surface (below) of leaves. All photos by A. Randi from the holotype (Randi GB-035).Published as part of Randi, Agusti, Wijedasa, Lahiru S. & Thomas, Daniel C., 2022, Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia, pp. 121-126 in Phytotaxa 530 (1) on page 123, DOI: 10.11646/phytotaxa.530.1.14, http://zenodo.org/record/582388
FIGURE 2. Hanguana sitinurbayai Randi. A. Whole infructescence with sterile and fertile bracts. B in Hanguana sitinurbayai (Hanguanaceae), a new species from mossy montane forest of Gunung Nyiut Penrissen, West Kalimantan, Indonesia
No full textFIGURE 2. Hanguana sitinurbayai Randi. A. Whole infructescence with sterile and fertile bracts. B. Detail of partial infructescence. C. Perianth, and detail of staminodes and staminodial scales. D–E. Ripe fruit, side and top view. F–H. Seed from top, side and front view. All photos by A. Randi from type specimen.Published as part of Randi, Agusti, Widodo, R.M. Wiwied & Adirahmanta, Sadtata N., 2023, Hanguana sitinurbayai (Hanguanaceae), a new species from mossy montane forest of Gunung Nyiut Penrissen, West Kalimantan, Indonesia, pp. 231-236 in Phytotaxa 606 (3) on page 234, DOI: 10.11646/phytotaxa.606.3.7, http://zenodo.org/record/820268
Disepalum Hooker 1860
No full textKey to the Disepalum species of Sumatra 1. Corolla lobes 5–9, as wide as or wider than long...................................................................................................... D. platypetalum - Corolla lobes 4, longer than wide.......................................................................................................................................................2 2. Corolla lobes linear and of uniform thickness, with acute apex, to 4.5 mm wide at the base........................... D. acuminatissimum - Corolla lobes spatulate, slightly thickened towards the blunt apex, less than 2 mm wide at the base...............................................3 3. Sepals 6.5–10.5 × 5.5–8.0 mm; carpophores 2.2–4.0 cm long, 0.8–1.5 mm thick, monocarps 9.0–13.0 × 7.5–10.0 mm; small tree to 8 m tall in upland and hill forests at 600–1200 m......................................................................................................... D. longipes - Sepals 10.0–16.0 × 8.0–14.0 mm; carpophores 4.0– 8.6 cm long, 2.0–6.0 mm thick, monocarps 10–21 × 6–15 mm; medium-sized trees to 25 m tall in lowland peat swamp forest......................................................................................................... D. rawagambutPublished as part of Randi, Agusti, Wijedasa, Lahiru S. & Thomas, Daniel C., 2022, Disepalum rawagambut (Annonaceae), a new tree species from peat swamp forest of Sumatra, Indonesia, pp. 121-126 in Phytotaxa 530 (1) on page 125, DOI: 10.11646/phytotaxa.530.1.14, http://zenodo.org/record/582388
Hanguana Blume
No full textKey to Hanguana (Hanguanaceae) in Borneo Adapted from Mohd Fahmi et al. (2012), and Hroneš et al. (2021) 1. Plants of open habitats (banks of large rivers, margins of freshwater bodies); colonial helophytes with massive, foliaceous stolons; seeds shallowly cupuliform................................................................................................................................... H. anthelminthica 1. Plants of closed-canopy forests (lowland to montane rainforests, kerangas); clump-forming mesophytes lacking stolons; seeds bowl-shaped or globose with wedge-shaped ostiole.......................................................................................................................... 2 2. Leaf blade corrugated................................................................................................................................................................. H. loi 2. Leaf blade flat..................................................................................................................................................................................... 3 3. Leaf lamina linear-lanceolate to very narrowly elliptic; fruits weakly 3-lobed, ripening medium pink to magenta......................... 4 3. Leaf lamina elliptic, broadly lanceolate, oblanceolate to elliptic; fruits variable but never 3-lobed, ripening pale yellow, red or black................................................................................................................................................................................................... 5 4. All parts of the plant (sub)glabrous, without floccose indumentum; sterile bract 1; lowland Kerangas ca. 100 m elev............................................................................................................................................................................................................. H. bakoensis 4. All parts of the plant covered by scattered and densely floccose hairs; sterile bract 2–3; mossy montane forest at 1200–1640 m elev.............................................................................................................................................................................. H. sitinurbayai 5. Small herb, up to 30 cm tall................................................................................................................................................................ 6 5. Medium to large herb, 40–150 cm tall............................................................................................................................................... 7 6. Stem evenly covered by leaves; lamina elliptic; infructescence deflexed............................................................................. H. nana 6. Stem apically with terminal crown of leaves; lamina broadly lanceolate; infructescence erect........................................ H. bogneri 7. Leaves 40–70 cm long; infructescence deflexed; ripe fruits red......................................................................................... H. deflexa 7. Leaves 60–100 cm long; infructescence erect; ripe fruits pale yellow or black................................................................................ 8 8. Lamina oblanceolate to narrowly elliptic, with midrib round-raised abaxially; fruit lageniform, ripening black; stigma terminal, prominently stipitate.............................................................................................................................................................. H. major 8. Lamina elliptic, with midrib weakly impressed; fruit globose, ripening pale yellow; stigma distinctly oblique, sessile............................................................................................................................................................................................................ H. karimataePublished as part of Randi, Agusti, Widodo, R. M. Wiwied & Adirahmanta, Sadtata N., 2023, Hanguana sitinurbayai (Hanguanaceae), a new species from mossy montane forest of Gunung Nyiut Penrissen, West Kalimantan, Indonesia, pp. 231-236 in Phytotaxa 606 (3) on pages 234-235, DOI: 10.11646/phytotaxa.606.3.7, http://zenodo.org/record/820268
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