Monanthotaxis vogelii Verdc., Kew Bull. 25 (1): 23 1971
Creators: name: Couvreur, Thomas L. P.
name: Dagallier, Leo-Paul M. J.
name: Crozier, Francoise
name: Ghogue, Jean-Paul
name: Hoekstra, Paul H.
name: Kamdem, Narcisse G.
name: Johnson, David M.
name: Murray, Nancy A.
name: Sonke, Bonaventure
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Monanthotaxis
Monanthotaxis vogelii

description: Monanthotaxis vogelii (Hook. f.) Verdc., Kew Bull. 25(1): 23, 1971 Map 9D ≡ Uvaria vogelii Hook.f., in Hooker Icon. Pl. 4: 767, 1848; Clathrospermum vogelii (Hook.f.) Benth., in Bentham &amp; Hooker 29, 1862; Popowia vogelii (Hook.f.) Baill.; Adansonia 8: 324, 1868. = Popowia dalzielii Hutch., in Hutch. &amp; Dalziel 55, 1927. Type. Nigeria. Benue State, Abinsi, <i>Dalziel J.M. 712</i>, 13 Sep 1972: lectotype, chosen by Hoekstra et al. (2021), p. 208: K [K000198917, K000913659]; isolectotypes: BM[BM001125037]; MO [2 sheets]; P[P00362644, P00362645]. = Monanthotaxis angustifolia (Exell) Verdc., Kew Bull., 25(1): 21, 1971; Enneastemon angustifolius Exell, J. Bot. 75: 163, 1937. Type. Nigeria. Ogun State, Ijebu, Shasha Forest reserve, <i>Richards P.W. 3469</i>, 17 May 1935: holotype: BM[BM000547356, BM001125040, BM001125041]; isotype: MO[MO-1889425]. Type. Nigeria. Benue State; Abinsi, <i>Dalziel, J.M. 712</i>, 13 Sep 1972: holotype: K[K000198917, K000913659]; isotypes: BM[BM001125037]; MO [2 sheets]; P[P00362644, P00362645]. Description. Scandent shrub to liana, 3 m tall, d.b.h. unknown. Indumentum of simple hairs; old leafless branches glabrescent, young foliate branches sparsely pubescent with appressed reddish brown hairs 0.1-0.2 mm long. Leaves: petiole 2-5 mm long, 1 mm in diameter, sparsely pubescent with appressed reddish brown hairs, slightly grooved, blade inserted on top of the petiole; blade 9.7-17.5 cm long, 2.5-5.6 cm wide, <b>obovate to oblanceolate</b>, apex acuminate to acute, acumen 1.5 cm long, <b>base cuneate to rounded</b>, chartaceous, below sparsely pubescent when young and old, above sparsely pubescent with appressed whitish hairs when young, sparsely pubescent to glabrous when old, discolorous, whitish below; midrib impressed, above glabrous when young and old, below sparsely pubescent when young and old; secondary veins 7 to 12 pairs, glabrous above; tertiary venation percurrent. Individual bisexual, inflorescences ramiflorous on old leafless branches, axillary. Flowers with 9 perianth parts in 3 whorls, 2 to 3(4) per inflorescence; pedicel 6-9(14) mm long, ca. 1 mm in diameter, densely pubescent with appressed yellow-brown hairs; in fruit 7-13 mm long, ca. 1 mm in diameter; upper bract soon falling ca. 2 mm long, ca. 0.7 mm wide; sepals 3, valvate, basally fused, 0.5-1 mm long, 1-1.5 mm wide, broadly ovate to broadly triangular, apex acute to rounded, base truncate, sparsely pubescent outside, glabrous inside, margins flat; petals free, outer petals longer than inner, <b>inner petals partly covered in bud</b>; outer petals 3, 2.4-3.3 mm long, 2 mm wide, elliptic to ovate, apex obtuse, base truncate, margins flat, sparsely pubescent outside, glabrous inside; inner petals 3, valvate, 2-2.7 mm long, 1.3 mm wide, elliptic, apex obtuse, base truncate, margins flat, sparsely pubescent outside, glabrous and sparsely pubescent towards apex inside; stamens (8)9, in 1 row, 1 mm long, linear to oblong; connective truncate, glabrous; staminodes 6, alternating with the stamens, glabrous; carpels free, 8 to 12, 2 mm long, stigma elongate, glabrous. Monocarps stipitate, stipes 2-4 mm long, ovary ca. 2 mm in diameter; monocarps 2 to 9, 11-15 mm long, 4-6 mm in diameter, <b>not moniliform, ellipsoid</b>, apex apiculate, pubescent, smooth, red when ripe; <b>seed 1 per monocarp</b>, ca. 10 mm long, 4-5 mm in diameter, ellipsoid; aril absent. Distribution. Known from Ghana, Ivory Coast, Benin, Nigeria and just reaching into Cameroon; in Cameroon known from the South-West region. Habitat. An infrequent species in Cameroon known from a single collection; in gallery or swamp forests, savannah open woodland and open high forest. Growing in cracks of schist rocks, on rocky islands, on loamy soil and on black clay. Altitude ~800 m a.s.l. Local and common names known in Cameroon. None recorded. Preliminary IUCN conservation status. Least Concern (LC) (Hoekstra et al. 2021). Uses in Cameroon. None reported. Notes. <i>Monanthotaxis vogelii</i> can be readily recognized among Cameroonian species by its obovate to oblanceolate leaves with a cuneate (or sometimes rounded) base, and secondary veins that form an acute angle with the primary vein. The monocarps are composed of a single seed (developing from a single ovule). The only specimen of this species from Cameroon was initially identified as <i>M. angustifolia</i>, however the name <i>M. angustifolia</i> was synonymized by Hoekstra et al. (2021). Indeed, the leaf shape was variable within <i>M. angustifolia</i> and intermediates exist with <i>M. vogelii</i>. Besides leaf shape, no other differences were found. Specimen examined. <b>South-West Region</b>: Mamfe Div on Cross river between Mamfe and the Nigerian boundary Abonando, 5.54°N, 9.07°E, <i>06 May 1902</i>, <i>Rudatis H.</i> 54 (K).
description: Published as part of <i>Couvreur, Thomas L. P., Dagallier, Leo-Paul M. J., Crozier, Francoise, Ghogue, Jean-Paul, Hoekstra, Paul H., Kamdem, Narcisse G., Johnson, David M., Murray, Nancy A. &amp; Sonke, Bonaventure, 2022, Flora of Cameroon - Annonaceae Vol 45, pp. 1-532 in PhytoKeys 207</i> on pages 239-240, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Hoekstra, PH, Wieringa, JJ, Maas, JM, Chatrou, LW, 2021. Revision of the African species of Monanthotaxis (Annonaceae). Blumea 66: 107 - 221, DOI: https://doi.org/10.3767/blumea.2021.66.02.01"]}