Desplatsia mildbraedii Burret

Wellsow, Julia, Hart, Michelle, Wilkie, Peter & Harris, David J., 2019, A taxonomic revision of the African genus Desplatsia Bocq. (Malvaceae - Grewioideae), European Journal of Taxonomy 584 (584), pp. 1-38 : 24-25

publication ID

https://doi.org/ 10.5852/ejt.2019.584

persistent identifier

https://treatment.plazi.org/id/BF451D61-305F-FF93-747E-B436957440CB

treatment provided by

Felipe

scientific name

Desplatsia mildbraedii Burret
status

 

Desplatsia mildbraedii Burret

Figs 1D View Fig , 2F View Fig , 3D View Fig , 4E View Fig , 8 View Fig , Table 1

Wissenschaftliche Ergebnisse der Deutschen Zentral-Afrika-Expedition, 1907–1908, unter Führung Adolf Friedrichs, Herzogs zu Mecklenburg. Vol. 2: Botanik: 497 ( Mildbraed 1912). – Type: DEMOCRATIC REPUBLIC OF CONGO • Irumu, Kifuku; G. W. J. Mildbraed 2882; syntype: B, presumed † • Turuma, Poyo; 2°42′ N, 30°21′ E; Apr. 1908; G. W. J. Mildbraed 2836; syntype: B, presumed †, lectotype: BM, designated here, isolectotype: BR [ BR0000013205478 ] GoogleMaps .

Other material studied

CAMEROON •village of Mayouka,near Muguka; Jul.1917; F.Fleury33163; BR [ BR0000020059491 ], P 15 km E of Dimako ; 4°23′ N, 13°34′ E; 15 Dec.1965; A. J. M.Leeuwenberg 7348; BR [ BR0000019964225 ], K, P, WAG [ WAG.1845698] 3 sheets GoogleMaps Melen II Map Abong-mbang; 3°34′ N, 13°02′ E; 20 Apr. 1961; R. Letouzey 3877; BR [ BR0000020438371 ], K, P, WAG [ WAG.1845673] GoogleMaps near Ngola, 30 km E of Yokadouma ; 3°29′ N, 15°19′ E; 10 May 1963; R. Letouzey 4979; BR [ BR0000019964201 ], K, P, WAG [ WAG.1845672] GoogleMaps 16 km W of Yenga, village of Port Gentil ; 2°03′ N, 15°10′ E; 20 Apr. 1971; R. Letouzey 10697; BR [ BR0000020059514 ], K, P GoogleMaps .

CENTRAL AFRICAN REPUBLIC • Moussaboula Village , 7 km N of Bayanga; 3°55′ N, 15°23′ E; 1 May 1985; R. W. Carroll 25; BR [ BR0000020061104 ] GoogleMaps R. W. Carroll 1072; MO R. W. Carroll 1084; MO R. W. Carroll 1092; MO Kongana camp; 2°47′ N, 16°25′ E; 16 Dec. 1993; D. J. Harris 4005; E [ E00930972 ] GoogleMaps Kongana research camp; 2°47′ N, 16°16′ E; 1 Feb. 1994; D. J. Harris 4397; E [ E00930950 ] GoogleMaps Sangha-Mbaere, Kongana camp; 2°47′ N, 16°26′ E; 30 Jan. 1996; D. J. Harris 5408; E [ E00930974 ] GoogleMaps Eleme ya Ngombe plot, W of Sangha River ; 2°58′ N, 16°11′ E; 3 Dec. 2000; D. J. Harris 7303; E [ E00930971 ] GoogleMaps W of Sangha River , 12 km NE of Bayanga; 3°01′ N, 16°11′ E; 13 May 2001; D. J. Harris 7709; E [ E00930973 ] GoogleMaps 30 Dec. 1948; Tisserant ( Équipe ) 1303; BM, BR [ BR0000020059538 ], P Boukoko; 3°54′ N, 17°55′ E; 11 Jan. 1949; Tisserant ( Équipe ) 1324; BM, BR [ BR0000020059521 ], P GoogleMaps Bayanga on the road to Dzanga; 2°54′ N, 16°15′ E; 20 Feb. 1976; Wraber LJU 49486 View Materials ; K GoogleMaps .

DEMOCRATIC REPUBLIC OF CONGO • Bambesa ; 3°26′ N, 25°41′ E; 27 Mar. 1953; P. Gérard 566 B; BR [ BR0000020059552 ] GoogleMaps ibid.; 26 Feb. 1957; P. Gérard 2669; BR [ BR0000020059545 ] 2 sheets GoogleMaps Epulu , “Zone de Mambesa (Ituri)” [area of Mambesa (Ituri)]; 1°25′ N, 28°35′ E; 12 Mar. 1986; T. Hart 540; BR [ BR0000019965543 ] GoogleMaps Nala ; 2°52′ N, 27°39′ E; 1907; F. Seret 789; BR [ BR0000020059644 ] 4 sheets GoogleMaps .

UGANDA • 4 miles E of Mukono ; 0°21′ N, 32°48′ E; 20 Dec. 1951; H. C. Dawkins 685; K GoogleMaps Budongo Forest ; 1°38′ N, 31°35′ E; W. J. Eggeling 1464; K GoogleMaps Budongo Forest , Bunyoro; 1°38′ N, 31°35′ E; 15 Jul. 1935; W. J. Eggeling 1745; BR [ BR0000020059507 ] GoogleMaps ibid.; Jul. 1935; W. J. Eggeling 2131; K GoogleMaps .

Description

HABIT. Tree to 9–25 m tall, DBH to (15–) 40–80 cm, branches and twigs slightly tomentose and with scattered simple hairs.

LEAVES. With 3–4-fid stipules, finely divided almost to the base, 5–10 mm long, 2 mm wide, lanceolate to filamentous, slightly rusty-tomentose and with scattered long hairs; petiole 1.2–1.8 cm long with similar indumentum; leaf blade usually drying greenish-brown, oblong, sub-leathery, 10–21 cm long, 2.8–8 cm wide, apex acute to slightly acuminate, base rounded to slightly asymmetrically subcordate, regularly toothed margin, slightly puberulous or almost glabrous above, densely, evenly-spaced stellate hairs below, with distinctly longer hairs on midrib and secondary veins, secondary veins rarely looping; domatia absent.

INFLORESCENCE. An axillary or terminal cyme of 4–8 pedicellate flowers, loose; peduncle 1–2.5(–4) cm long covered by the same indumentum as the stipules; involucral bracts 6–8, 3 inner ovate-elliptic, 3 mm long, 2 mm wide, and 3–5 outer oblong-lanceolate, not enveloping in the buds and falling off early.

FLOWERS. Pedicellate, pedicels 0.8–2 cm long with similar indumentum as the stipules; buds elliptic and brown-velvety. Sepals cream to pale yellow, fleshy but brittle, 1–1.5 cm long, 2–4 mm wide, not fringed at tip, tomentose and with some longer hairs outside. Petals lanceolate to obovate-oblong, 4–4.8 mm long, 1–2.4(–3) mm wide. Ovary 5–7-locular.

FRUITS. Globose to subglobose, 6.5–9.5 cm long, 5–8.5 cm wide, obscurely grooved, glabrous.

SEEDS. Obovoid, 0.7–1.7 cm long, 0.3–1 cm wide.

Distribution (see Fig. 8 View Fig )

Cameroon, Central African Republic, Democratic Republic of Congo, Uganda.

Habitat

Terra firma forest, both old growth and selectively logged semi-evergreen forest. At altitudes of 350– 1200 m a.s.l.

Phenology

Flower: December–May, fruit: December, February, July.

Proposed IUCN status

Least Concern (LC). Desplatsia mildbraedii has an EOO of 441 153 km 2 and a wide distribution range across the north of the Congo basin. This species has a relatively small AOO of 80 km 2, but since there are no major threats and the species has fairly recently been collected in protected areas of the Dzanga- Sangha Reserve ( Harris 2002; Harris & Wortley 2008) and the Okapi Wildlife Reserve ( Democratic Republic of Congo), thus ensuring some level of protection, D. mildbraedii is classed as Least Concern.

Notes

First-step lectotypification for D. mildbraedii was done by Wilczek (1963). Syntypes are available at BM and BR; here, we select the BM specimen as lectotype, as it bears flowers and fruits which we have examined in London.

Desplatsia mildbraedii is clearly recognized as a separate species by us despite doubts on the validity of earlier separations of D. mildbraedii from D. dewevrei ( Verdcourt 2001) . The key characters found during this revision that reliably set D. mildbraedii apart from D. dewevrei are shown in Table 1.

G

Conservatoire et Jardin botaniques de la Ville de Genève

W

Naturhistorisches Museum Wien

J

University of the Witwatersrand

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

BM

Bristol Museum

BR

Embrapa Agrobiology Diazothrophic Microbial Culture Collection

F

Field Museum of Natural History, Botany Department

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

E

Royal Botanic Garden Edinburgh

A

Harvard University - Arnold Arboretum

M

Botanische Staatssammlung München

K

Royal Botanic Gardens

WAG

Wageningen University

R

Departamento de Geologia, Universidad de Chile

N

Nanjing University

MO

Missouri Botanical Garden

NE

University of New England

LJU

University of Ljubljana

T

Tavera, Department of Geology and Geophysics

H

University of Helsinki

C

University of Copenhagen

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Malvales

Family

Malvaceae

Genus

Desplatsia