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Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda-a third and new species from a disjunct African genus
No full textFischer, Eberhard, Killmann, Dorothee, Meve, Ulrich (2013): Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda-a third and new species from a disjunct African genus. Phytotaxa 77 (2): 19-26, DOI: 10.11646/phytotaxa.77.2.1, URL: http://dx.doi.org/10.11646/phytotaxa.77.2.
FIGURE 6 in Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi
No full textFIGURE 6. Carapa wohllebenii. Holotype in Herb. BR, inflorescence kept separate in spirit. Reproduced with permission of the Botanic Garden Meise.Published as part of Fischer, Eberhard, Killmann, Dorothee, Leh, Burkhard & Janssens, Steven B., 2021, Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi, pp. 20-36 in Phytotaxa 511 (1) on page 29, DOI: 10.11646/phytotaxa.511.1.2, http://zenodo.org/record/542653
FIGURE 7 in Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi
No full textFIGURE 7. Carapa grandiflora. Holotype in Herb. K. Reproduced with permission of the Board of Trustees, Royal Botanic Gardens, Kew.Published as part of Fischer, Eberhard, Killmann, Dorothee, Leh, Burkhard & Janssens, Steven B., 2021, Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi, pp. 20-36 in Phytotaxa 511 (1) on page 30, DOI: 10.11646/phytotaxa.511.1.2, http://zenodo.org/record/542653
FIGURE 4. Carapa wohllebenii. A. Shoot with flowers. B. Inflorescence. C–F in Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi
No full textFIGURE 4. Carapa wohllebenii. A. Shoot with flowers. B. Inflorescence. C–F. Flowers. Photographs: E. Fischer, Rwanda, Gisakura, 18 September 2016. Scale bars: A, C–F. 5 mm; B. 5 cm.Published as part of Fischer, Eberhard, Killmann, Dorothee, Leh, Burkhard & Janssens, Steven B., 2021, Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi, pp. 20-36 in Phytotaxa 511 (1) on page 26, DOI: 10.11646/phytotaxa.511.1.2, http://zenodo.org/record/542653
FIGURE 3. Carapa wohllebenii. A, C. Branches with leaves and fruits. B in Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi
No full textFIGURE 3. Carapa wohllebenii. A, C. Branches with leaves and fruits. B. Leaf. Photographs: E. Fischer. A. Rwanda, Uwinka, 24 September 2015. B. C. Butare, 3 January 2016. Scale bar: A. 10 cm; B, C. 5 cm.Published as part of Fischer, Eberhard, Killmann, Dorothee, Leh, Burkhard & Janssens, Steven B., 2021, Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi, pp. 20-36 in Phytotaxa 511 (1) on page 25, DOI: 10.11646/phytotaxa.511.1.2, http://zenodo.org/record/542653
FIGURE 5. Carapa wohllebenii. A. Shoots with leaves. B. Shoots with young leaves. C. Fruit. D in Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi
No full textFIGURE 5. Carapa wohllebenii. A. Shoots with leaves. B. Shoots with young leaves. C. Fruit. D. Fruit opened showing seeds. Photographs: E. Fischer, Rwanda, Nyungwe National Park. A. Gisakura, 18 September 2016. B. Uwinka, 17 March 2017. C. Uwinka, 24 September 2015. D. Kamiranzovu, 11 September 2005. Scale bars: A–B. 10 cm; C–D. 5 cm.Published as part of Fischer, Eberhard, Killmann, Dorothee, Leh, Burkhard & Janssens, Steven B., 2021, Carapa wohllebenii (Meliaceae), a new tree species from montane forests in the Democratic Republic of Congo, Rwanda, and Burundi, pp. 20-36 in Phytotaxa 511 (1) on page 27, DOI: 10.11646/phytotaxa.511.1.2, http://zenodo.org/record/542653
FIGURE 3. Neoschumannia kamerunensis. A, B in Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda-a third and new species from a disjunct African genus
No full textFIGURE 3. Neoschumannia kamerunensis. A, B, flower in lateral view, scale bar 5 mm in A, 3 mm in B; C, flower in top view (left), scale bar 5 mm. Neoschumannia cardinea. C, flower in top view (right), scale bar 5 mm; D, F, flower in lateral view, scale bar 5 mm; E, pendulous flower, scale bar 5 mm. All photos taken in cultivation at University of Bayreuth by U. Meve (N. kamerunensis from Meve & Etuge 910, N. cardinea from Liede & Meve 3359).Published as part of Fischer, Eberhard, Killmann, Dorothee & Meve, Ulrich, 2013, Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda-a third and new species from a disjunct African genus, pp. 19-26 in Phytotaxa 77 (2) on page 24, DOI: 10.11646/phytotaxa.77.2.1, http://zenodo.org/record/506679
Neoschumannia Schlechter 1905
No full textKey to the species of Neoschumannia 1. Tips of petals with a tuft of long purplish hairs, corolla lobes 15–20 × 3–4 mm, adaxially olive green to purple with whitish splash at base, tufts of purplish clavate-tipped hairs at base, column supporting gynostegium 3–4 mm tall....................................................................................................................................................................... N. cardinea 1*. Tips of petals nearly glabrous to pubescent, corolla lobes 7–18 × 2.5-3 mm or 24–28 × 9 mm, adaxially greenish with purple dots in the upper four firth, or emerald green and smooth and brilliant, with either purple or whitish clavate hairs at base, column supporting gynostegium 1.4–2.5 mm tall.................................................................................. 2 2. Corolla lobes 7–18 × 2.5–3 mm, adaxially greenish with purple dots in the upper four fifths, with purple clavate hairs at base, corona pubescent to villous, coronal skirt membranous and recurved, column supporting gynostegium 2–2.5 mm tall.............................................................................................................................................. N. kamerunensis 2*. Corolla lobes 24–28 × 9 mm, emerald green, smooth and brilliant, with whitish clavate hairs at base, corona glabrous, coronal skirt fleshy and spreading, column supporting gynostegium ca. 1.4 mm tall............. N. gishwatiensisPublished as part of Fischer, Eberhard, Killmann, Dorothee & Meve, Ulrich, 2013, Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda-a third and new species from a disjunct African genus, pp. 19-26 in Phytotaxa 77 (2) on pages 23-24, DOI: 10.11646/phytotaxa.77.2.1, http://zenodo.org/record/506679
Neoschumannia gishwatiensis Eb. Fischer, Killmann & Meve 2013, sp. nov.
No full textNeoschumannia gishwatiensis Eb.Fischer, Killmann & Meve, sp. nov. (Figs. 1 & 2) Ab omnibus speciebus Neoschumanniae adhuc cognitis gemmis obovatis, corolla lobis ellipticis, emeraldis, nitidis, corona gynostegiali partibus extendibus basali discoidis conjunctis differt. Type:— RWANDA. Northern Province: Gishwati Forest Reserve, 29°21’22”E, 1°49’36”S, 2170 m, 2 October 2009, Fischer 13225 (holotype K!; isotype KOBL!). Lianas, climbing up to 5 m high, with above-ground runners up to 2 m long. Latex colorless, roots fibrous. Stems twining when support available, 4–5 mm diam, green, glabrous. Petiole up to 2.3 cm long, adaxially channelled; blades elliptic, 9–11 × 5–7 cm, herbaceous to subcoriaceous, basally rounded, acuminate at apex, green, concolor (abaxial side of leaf slightly paler than adaxial side), glabrous, base of lamina adaxially with 2 colleters, stipules reduced or minute, 0.8–1 mm long, glands ovoid. Inflorescences extra-axillary, solitary, many-flowered with 1–2 flowers open at time, pseudo-umbellate, with flowers all arising at apex of peduncle, lax; pedunculate, peduncles filiform, ca. 4–5 cm long, 1.5 mm diam., glabrous; rachis persistent, cylindrical, thick, straight, with numerous lanceolate bracts; pedicels filiform, ca. 4 cm long, 1 mm wide, glabrous. Flowers pendulous. Flower buds obovoid. Calyx aposepalous, sepals lanceolate, ca. 6 mm long, acute, glabrous. Corolla rotate, ca. 25 mm long, apopetalous, petals narrowly elliptic, 24–28 × 8–9 mm, slightly twisted at base and suddenly narrowed to ca. 0.7 mm width, subacute, abaxially greenish, tinged reddish to brownish, adaxially emerald-green, smooth, brilliant, with whitish, vibratile, clavate trichomes, ca. 2 mm long, on base of petals, otherwise glabrous; petals usually slightly spreading at anthesis. Gynostegial corona a basally fused ring of staminal and interstaminal parts which is extended basally into a completely fused skirt; skirt discoid, spreading, fleshy, white, glabrous; staminal corona lobes lanceolate, ca. 2 mm long, conniventerect, purple with translucent-white apex, laterally and abaxially with simple, thin, spreading hairs, 0.4–0.5 mm long, translucent-white; interstaminal corona lobes deltoid, ca. 2 mm long, ascending-erect with apex slightly recurved, canaliculate, occasionally apically notched, white with purple dots, laterally and abaxially covered with simple, thin, spreading hairs, 0.5-0.6 mm long, translucent-white. Gynostegium with corona atop a column, exposed above corolla, column cylindrical, ca. 1.4 × 1.6 mm, whitish. Anthers subquadrate, erect, thickened. Pollinia erect, obovoid, ca. 0.4 × 0.3 mm; corpusculum ellipsoid, ca. 0.2 mm long, with inconspicuous, ellipsoid-deltoid basal projections, caudicles linear, ca. 0.1 mm long, straight. Style head umbonate. Mericarps paired, pendulous, narrowly oblong, terete, 26–30 cm long, 4–5 mm diam., acute-angled (20–30°), shortly beaked, mottled whitish green, green or dark green, glabrous. Seeds ovate, 11 × ca. 4 mm, brown, wing ca. 1 mm wide; coma ca. 30 mm long, white. Habitat:—This species was found near the edge of the Gishwati Forest Reserve, in degraded secondary forest dominated by Neoboutonia macrocalyx Pax, Macaranga kilimandscharica Pax, Polyscias fulva (Hiern) Harms, Carapa grandiflora Sprague, Vernonia auriculifera Hiern, and Solanecio mannii (Hook. f.) C.Jeffrey at 2170 m altitude. The Gishwati Forest is a remnant of a once larger montane forest (Mildbraed 1914) that was mostly destroyed in the 1980’s due to a World Bank project, and converted into pastures. The remaining forest relic was again logged after 1994. However, it still harbors a unique diversity and species new to science were recently discovered (Fischer et al. in prep.). The local fauna is also very rich, and a small population of chimpanzees is still present (R. Chancelor & A. Rundus, pers. comm.). For a description of the vegetation of the Gishwati Forest, see Fischer & Hinkel (1994). Conservation Status: — Neoschumannia gishwatiensis is only known from the type locality in the Gishwati Forest Reserve. According to the IUCN criteria (IUCN 2012) it can be assessed as critically endangered (CR). However, the species may be more widespread in similar forests of Rwanda (e.g., Nyungwe National Park; Fischer & Killmann 2008), Burundi (Kibira National Park) or the Democratic Republic of Congo (Kahuzi-Biéga National Park; Fischer 1996). It may be overlooked as it is not very conspicuous without flowers and fruits and resembles other apocynaceous lianas. Rwanda has a special responsibility for the conservation of this unique species.Published as part of Fischer, Eberhard, Killmann, Dorothee & Meve, Ulrich, 2013, Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda-a third and new species from a disjunct African genus, pp. 19-26 in Phytotaxa 77 (2) on pages 20-23, DOI: 10.11646/phytotaxa.77.2.1, http://zenodo.org/record/506679
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