Xylopia katangensis De Wild., Ann. Mus. Congo Belge, Bot. Ser. 4, Bot. 1 (2): 32 - 33 1902
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
Xylopia
Xylopia katangensis

description: Xylopia katangensis De Wild., Ann. Mus. Congo Belge, Bot. Sér. 4, Bot. 1(2): 32-33, 1902 Map 18A Type. Democratic Republic of the Congo. Katanga; Lukafu, <i>Verdick E. 503</i>, May 1900: holotype: BR[BR0000024941556]. Description. Tree, up to 13 m tall, d.b.h. 60 cm; <b>buttresses present.</b> Old branches glabrous, young branches sparsely pubescent, the hairs ca. 0.2 mm long. Leaves: petiole 4-9 mm long, ca. 1 mm wide, glabrous, slightly grooved, blade inserted on the side of the petiole; blade 7.1-9.4 cm long, 2.4-3.3 cm wide, lanceolate to lanceolate-elliptic, apex acuminate to acute, acumen 0.4-1.1 cm long, base cuneate, subcoriaceous, <b>below glabrous, rarely sparsely pubescent when young, glabrous when old, above glabrous when young and old</b>, slightly discolorous; midrib slightly raised or flat, above glabrous when young and old, below glabrous when young, glabrous when old; secondary veins 10 to 15 pairs, glabrous above; tertiary venation reticulate. Individuals bisexual; inflorescences ramiflorous on young foliate or old leafless branches, axillary, peduncle 1-3.5 mm long. Flowers with 9 perianth parts in 3 whorls, <b>1 to 12 per inflorescence</b>; pedicel 6-9 mm long, 0.5-1 mm in diameter, pubescent to sparsely pubescent; in fruit 8-14 mm long, 2-3 mm in diameter, glabrous; bracts 2 to 4, several basal and one upper towards the upper half of pedicel, bract 1-2 mm long, 1-2 mm wide; sepals 3, valvate, basally fused, 1-2 mm long, 2-3 mm wide, triangular to ovate, apex acute to obtuse, base truncate, pubescent outside, glabrous inside; petals free, subequal; <b>outer petals 3, 19-37 mm long, 2.7-3.2 mm wide at base, linear</b>, apex obtuse, base broad and concave, yellow-green and red at the base, sparsely pubescent outside, pubescent inside; inner petals 3, valvate, 11.4-29 mm long, 2.3-2.9 mm wide at base, linear and rigid, apex acute, base broad and concave, yellow-green and red at the base, pubescent outside, pubescent, base glabrous inside; stamens ca. 90, in 6 to 7 rows, 1 mm long, oblong; connective apex shield-like, glabrous; carpels 3 to 4, ovary 1 mm long, stigmas loosely connivent with tips free, linear, 2.5-4.4 mm long, glabrous. Monocarps stipitate, stipe ca. 4 mm long, 3-4 mm in diameter; monocarps 2 to 4, 19-34 mm long, 12-15 mm wide, oblongoid, apex obtuse, glabrous, weakly torulose, verrucose and longitudinally wrinkled when dried, green outside, endocarp red; seeds 1 to 5 per monocarp, <b>in a single or two irregular rows</b>, 9-11 mm long, 7-8 mm wide, ellipsoid; <b> sarcotesta gray or light green <i>in vivo</i>; aril absent.</b> Distribution. From north-central Nigeria to southern Democratic Republic of the Congo and south to northeastern Zambia; in Cameroon known from a single collection in the Central region. Habitat. A very rare species in Cameroon, not re-collected since 1962; in riparian inundated habitats and swamp forests (the collection from Cameroon was made along the Nyong). Altitude 470 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Least Concern (LC) (Harvey-Brown 2019k). Uses in Cameroon. None reported. Notes. In its exceedingly narrow petals and long stigmas <i>Xylopia katangensis</i> is most similar to <i>X. longipetala</i>, but has proportionately longer petioles, more flowers per inflorescence, and petals that are more rigid and narrower at the base. Specimen examined. <b>Central Region</b>: Près de Mbeuga (entre Ayos et Akonolinga), 3.9°N, 12.52°E, <i>08 March 1962</i>, <i>Letouzey R.</i> 4498 (P,YA).
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 464-466, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Harvey-Brown, Y, 2019k. Xylopia katangensis. The IUCN Red List of Threatened Species: e.T137022338A149069292. https://doi.org/10.2305/IUCN.UK.2019-2.RLTS.T137022338A149069292.en"]}