Duguetia barteri Chatrou, Changing Genera: 66 1998
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
Duguetia
Duguetia barteri

description: Duguetia barteri (Benth.) Chatrou, Changing Genera: 66, 1998 Fig. 25; Map 3H ≡ Annona barteri Benth., Trans. Linn. Soc. London 23(3): 477, 1862. = Pachypodanthium staudtii (Engl. &amp; Diels) Engl. &amp; Diels var. letestui Pellegr., Bull. Soc. Bot. France 95: 137, 1948. <i>nom. illeg</i>. = Pachypodanthium tessmannii R.E.Fr., <i>nom. nud.</i> Type. Nigeria. Anambra state; Onitsha, <i>Barter C. 445</i>, 1858: holotype: K[K000198875]. Description. Tree, 8-40 m tall, d.b.h. 40-60 cm; stilt roots or buttresses absent. Indumentum of stellate or fasciculate hairs; old leafless branches sparsely pubescent to glabrous, young foliate branches sparsely pubescent to densely pubescent. Leaves: petiole 3-7 mm long, 2-3 mm in diameter, densely to sparsely pubescent, grooved, blade inserted on the side of the petiole; blade 10-23 cm long, 3-7 cm wide, ovate to elliptic, apex acuminate to acute, acumen ca. 1 cm long, base cordate to acute, subcoriaceous, below densely pubescent when young and old, above glabrous when young and old, concolorous; midrib <b>sunken or flat, not grooved</b>, above glabrous when young and old, below densely pubescent when young and old; secondary veins 9 to 18 pairs, <b>distinct</b>, glabrous below; tertiary venation reticulate. Individuals bisexual; <b>inflorescences ramiflorous on old leafless branches, appearing axillary, forming on a short peduncle 4-10 mm long.</b> Flowers with 9 perianth parts in 3 whorls, 2 to 5 per inflorescence; pedicel 11-22 mm long, 3-4 mm in diameter, sparsely to densely pubescent; in fruit 1-25 mm long, 1-4 mm in diameter, sparsely to densely pubescent; bracts 2, one basal and one upper in the lower half of pedicel, basal bracts 7-9 mm long; sepals 3, valvate, free, 10-15 mm long, 9-10 mm wide, ovate, apex acute, base truncate, yellowish green to greyish green, densely pubescent outside, glabrous inside, margins flat; petals free, outer petals longer than inner to sub equal; outer petals 3, 10-22 mm long, 5-8 mm wide, elliptic to ovate, apex acute, base truncate, cream to white, margins flat, sparsely pubescent outside, glabrous inside; inner petals 3, imbricate, 15-17 mm long, 4-5 mm wide, elliptic to ovate, apex acute, base truncate, cream, margins flat, pubescent outside, glabrous inside; stamens numerous, ca. 1 mm long, broad; connective discoid, glabrous, red; staminodes absent; carpels free, 50 to 75, ovary ca. 1.5 mm long, stigma globose, glabrous. Fruit pseudosyncarpous, 40-200 mm in diameter, globose to depressed ovoid; individual carpels sessile, <b>60 to 70 carpels, completely fused</b>, ca. 15 mm long, ca. 7 mm in diameter, globose to ovoid, apex domed-shaped, densely pubescent, longitudinally ribbed with 5 to 6 main ribs, pinkish red when ripe; seed 1 per monocarp, 7-15 mm long, 4-7 mm in diameter, ellipsoid; <b>aril present, pale yellow.</b> Distribution. A central African species, from Cameroon to Gabon; in Cameroon known from East, South, Central, Littoral and South-West regions. Habitat. In periodically or permanently inundated forests. Altitude 350-600 m a.s.l. Local and common names known in Cameroon. ntom (dial. Bagali) (Letouzey 1964). IUCN conservation status. Least Concern (LC) (Cosiaux et al. 2019i). Uses in Cameroon. None recorded. Notes. <i>Duguetia barteri</i> is distinguished by its elliptic to ovate leaves, the midrib not grooved above, inflorescences occurring on a short peduncle in leafless parts of the branches and its fruits with completely fused monocarps. Specimens examined. <b>Central Region</b>: Bank of Nyong river 40 km SE of Yaoundé, 3.65°N, 10.78°E, <i>09 November 1961</i>, <i>Breteler F.J.</i> 2013 (BR,K,P,WAG,YA); Abimoa, 3.57°N, 11.62°E, <i>04 April 1962</i>, <i>de Bruijn J.</i> s.n. (WAG[WAG0175175]); Bordure du Nyong près du lac de Nkolmaka (près route Mbalmayo-Akonolinga), 3.51°N, 11.82°E, <i>22 April 1954</i>, <i>Letouzey R.</i> 304 (P,YA). <b>Littoral Region</b>: Right bank Ouem river near mouth in Sanaga R 6 km SW of Massok, 4.13°N, 10.47°E, <i>04 April 1965</i>, <i>Leeuwenberg A.J.M.</i> 5377 (BR,K,MO,P,WAG,YA); Tissongo study area 3.57°N, 9.869°E, <i>01 June 1976</i>, <i>Waterman P.G.</i> 874 (K). <b>South Region</b>: mountain chain Ngovoyang 2 km in forest from Bikiliki village situated between Bipindi and Lolodorf, 3.18°N, 10.52°E, <i>18 February 2012</i>, <i>Couvreur T.L.P.</i> 393 (WAG,YA); Campo-Ma’an National Park, 2.38°N, 10.06°E, <i>01 July 2001</i>, <i>van Andel T.R.</i> 3810 (KRIBI,WAG,YA). <b>South-West Region</b>: Ekundu Kundu, 5.15°N, 8.883°E, <i>30 April 1996</i>, <i>Cheek M.</i> 8274 (K,WAG,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 101-103, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Letouzey, R, 1964. Denominations pygmees de quelques arbres et arbustes forestiers camerounais. Journal d'Agriculture Tropicale et de Botanique Appliquee 11: 347 - 383, DOI: https://doi.org/10.3406/jatba.1964.2784", "Cosiaux, A, Couvreur, TLP, Erkens, RHJ, 2019i. Duguetia barteri. The IUCN Red List of Threatened Species: e.T35015A132517172. https://doi.org/10.2305/IUCN.UK.2019-3.RLTS.T35015A132517172.en"]}