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Compilation
Ochna densicoma

6 Images see all

Isotype of Ochna densicoma Engl.&Gilg [family OCHNACEAE]
Type of Ochna densicoma Engl. & Gilg. [family OCHNACEAE]
Type of Ochna densicoma Engl. & Gilg [family OCHNACEAE]
Holotype of Ochna afzelioides N.Robson [family OCHNACEAE]
Isotype of Ochna densicoma Engl. et Gilg [family OCHNACEAE]
Ochna holstii Engl. [family OCHNACEAE]
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Name

Identification
Ochna densicoma Engl. & Gilg [family OCHNACEAE ] Verified by Robson,N.K.B., 1961 Ochna holstii Engl. [family OCHNACEAE ] (stored under name);
Related name
  • Ochna afzelioides
  • Ochna densicoma
  • Ochna holstii

Flora

Entry for Ochna holstii Engl. [family OCHNACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 1, (2005) Author: B. Verdcourt, B.Sc., Ph.D.
Names
Ochna holstii Engl. [family OCHNACEAE], in Abh. Preuss. Akad. Wiss: 69 (1894) & in P.O.A. C: 273 (1895); Gilg in E.J. 33: 234, 241 (1903); T.T.C.L.: 382 (1949); I.T.U. ed. 2: 279 (1952); K.T.S.: 337 (1961); Robson in F.Z. 2: 240 (1963); Bamps, F.C.B. Ochnaceae: 8 (1967); du Toit & Obermayer, F.S.A. 22: 5 (1976); Blundell, Wild Fl. E Afr.: 62, fig. 276 (1987); K.T.S.L.: 121 (1994); Vollesen in Fl. Ethiopia & Eritrea 2 (2): 66, fig. 69.1.4 (1995). Type: Tanzania, Lushoto District: West Usambaras, Mbalu, Holst 2601 (B, holo., K!, iso.)
Ochna prunifolia Engl. [family OCHNACEAE], P.O.A. C: 273 (1895); Gilg in E.J. 236 (1903); T.T.C.L.: 384 (1949). Types: Kenya, Kitui District: Kitui, Hildebrandt 2825 (B†, syn.); Tanzania, District unclear, Rombo Mku, Volkens 1960 (B†, syn.) & District unclear, Mkulia, Volkens s.n. (B†, syn.)
Ochna longipes Bak. [family OCHNACEAE], in K.B. 1897: 247 (1897); Brenan in Mem. N.Y. Bot. Gard. 8: 234 (1953); White, F.F.N.R.: 251 (1962). Type: Malawi, Mt Malosa near Zomba, White 429 (K!, holo.)
Ochna shirensis Bak. [family OCHNACEAE], in K.B. 1897: 247 (1897). Type: Malawi, Mt Zomba & Mt Malosa, White 430 (K, holo.!)
Ochna acutifolia Engl. [family OCHNACEAE], in E.J. 28: 433 (1900). Type: Tanzania, Morogoro District: Uluguru, near Nghweme, Stuhlmann 8852 (B†, syn.), & Lushoto District: West Usambaras, Buchwald s.n. (B†, syn., BM, K!, isosyn.)
Ochna densicoma Engl. & Gilg [family OCHNACEAE], in E.J. 33: 241 (1903); T.T.C.L.: 382 (1949). Type: Tanzania, Lushoto District: East Usambaras, Nderema, Scheffler 169 (B†, holo., BM!, EA!, K!, iso.)
Ochna keniensis Sleumer [family OCHNACEAE], in N.B.G.B. 12: 69 (1934); K.T.S.: 338 (1961); K.T.S.L.: 121 (1994). Type: Kenya, Mt Kenya S slope, near Rupingazi R., R.E. & T.C.E. Fries 2031 (UPS!, holo.)
Information
Tree or shrub 3–27 m tall with smooth grey or greybrown bark; branches purplish brown, somewhat angular, usually glabrous or rarely puberulous when young; bark not peeling, lenticellate; slash pink to dull red. Leaves mostly rather thin, oblanceolate, obovate or elliptic to oblong, (1.5–)5–13 cm long, (0.7–)1.2–4.3 cm wide, usually acute to narrowly acutely acuminate, but can be more obtuse in small-leaved forms in south, cuneate to ± rounded at the base, margin densely curved-serrulate; lateral veins 20–25, usually ± at right angles to mid-rib together with the dense tertiary venation prominent above; petiole 1–3(–3.5) mm long, ± slender and often appearing longer since leaves can be borne on very short slender spur shoots, but with a small bud at junction with petiole. Flowers 5–20 in racemiform inflorescences with rhachis up to 2 cm long, less often subumbellate; pedicels 1.3–4 cm long, articulated at base (first flower) or within 3 mm of it, glabrous or rarely puberulous. Sepals oblong-elliptic, unequal, 6–9 mm long, 3–5 mm wide, becoming deep red in fruit, 9–18 mm long, (3.5–)6–8 mm wide. Petals pale to bright yellow, obovate, 8–12 mm long, 3–6 mm wide. Anthers 1–2 mm long, ± 1/2 length of the filaments, dehiscing by longitudinal slits. Carpels 5(–6) with styles usually completely united; stigma subglobose or 5–6-lobed. Drupelets black, ellipsoid-cylindric, less often ovoid or subglobose, 8–14 mm long, 5–9 mm wide, inserted at or near base.
Range
DISTR. U 1, 3; K 1, 3–7; T 2–8
Altitude range
(250– (see note)) 900–2350 m
Distribution
KENYA Elgeyo/Uasin Gishu Districts Kaptagat, S Elgeyo Forest, June 1934, McIntyre in F.D. 3289!;KENYA Kiambu District top of Kedong Rift wall about 37 km from Nairobi, 9 Feb. 1963, Verdcourt 3582!;KENYA Kisumu-Londiani District Tinderet Forest Reserve, 15 June 1949, Maas Geesteranus 4971!TANZANIA Lushoto District East Usambaras, Amani, 19 Jan. 1942, Greenway 6432!;TANZANIA Kondoa District Kinyassi Mt, 2 Jan. 1928, B.D. Burtt 1806!;TANZANIA Njombe District Njombe, 18 Dec. 1931, Lynes 115!UGANDA Acholi District SE Imatong Mts, Aringa R. headwaters, 6 Apr. 1945, Greenway & Hummel 7296! & Imatong Mts, Apr. 1938, Eggeling 3539!;UGANDA Mbale District Suam Valley, May 1933, Dale in F.D. 3121!
Distribution (external)
Congo (Kinshasa)
Rwanda
Burundi
Sudan
Ethiopia
Malawi
Zambia
Zimbabwe
Mozambique
South Africa
Notes
As Robson has pointed out O. holstii is very variable. The specimens with large acutely acuminate leaves which are mostly tall forest trees present no difficulty but in many often drier areas small-leaved specimens which are often no more than small shrubs are so different that it is difficult to believe they are the same species; attempts at sorting out varieties have failed. Ruffo & Kisena 2778 from Muva Mbizi Forest Reserve at 1880 m collected on 21 Nov. 1967 is a shrub only 2 m tall with small elliptic obtuse leaves up to 3.8 x 1.5 m. A sterile specimen Gilchrist in F.H. 1734 from the Calderara [sic] clearing near Mufindi has large ovoid inflorescence buds 9 x 5 mm very different from the narrower ones of the northern forest trees but Robson has accepted it as O. holstii. Vollesen MRC 4410 from Mayombera Forest Reserve, lowland forest of Erythrophleum suaveolens, Isoberlinia, Treculia and Parkia is from 250 m, the lowest altitude d, and has blunt leaves. Cribb et al. 11157 (Tanzania, T 6, Ulanga District: Sali, N side of E peak of Ngongo Mt at 1350 m, floor of montane forest, 23 Jan. 1979) has been referred to O. holstii but the young stems and 25 mm long pedicels are distinctly pubescent and it is a shrub to 1.5 m; the ellipsoid-cylindric drupelets have attachments to distinctly one side of the base. Anthers not known but presumably opening by splits. Much further fieldwork needs doing on these shrubby variants.

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