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Thunbergia petersiana Lindau [family ACANTHACEAE]

Date Updated: 19 August 2007

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, (2008) Author: Kaj Vollesen
Names
Thunbergia petersiana Lindau [family ACANTHACEAE], in E.J. 17: 89 (1893) & in E.J. 17, Beibl. 41: 35 (1893) & in P.O.A. C: 366 (1895); Burkill in F.T.A. 5: 23 (1899); Clutton-Brock & Gillett in Afr. J. Ecol. 17: 154 (1979); Iversen in Symb. Bot. Ups. 29, 3: 162 (1991); Ruffo et al., Cat. Lushoto Herb. Tanz.: 11 (1996) pro parte; Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 506 (1997). Type: Mozambique, Boror, Peters s.n. (B†, holo.) Thunbergia chrysops [family ACANTHACEAE], [sensu Klotzsch in Peters, Reise Mossamb.: 196 (1861), non Hook. (1844)] Thunbergia stuhlmanniana Lindau [family ACANTHACEAE], in E.J. 17: 91 (1893); Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 507 (1997). Type: Uganda, Kigezi District: Butumbi, Kawanda, Stuhlmann 2181 (B†, holo.) Thunbergia mollis Lindau [family ACANTHACEAE], in E.J. 17, Beibl. 41: 35 (1893), nom. nud. & in E.J. 20: 2 (1894) & in P.O.A. C: 366 (1895); Burkill in F.T.A. 5: 22 (1899); Lindau in Z.A.E.: 292 (1911); Binns, Checklist Herb. Fl. Malawi: 16 (1968); Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 506 (1997). Types: Malawi, Buchanan 263 (B†, syn.; BM!, K!, iso.) & Buchanan 1092 (B†, syn.; K!, iso.) Thunbergia katangensis De Wild. [family ACANTHACEAE], in Ann. Mus. Congo Bot., Ser. 4, 1: 135 (1903) & Contrib. Fl. Katanga: 193 (1921); Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 506 (1997). Type: Congo-Kinshasa, Katanga, Lukafu, Verdick 292 (BR!, holo.) Thunbergia swynnertonii S.Moore var. cordata [family ACANTHACEAE], in J.L.S. 40: 158 (1911); R.E. Fries in Wiss. Ergebn. Schwed. Rhod.-Congo-Exp. 1911–12. Bot. 1: 303 (1916). Types: Mozambique, Kurumadzi River, Jihu, Swynnerton 1924 (BM!, syn.; K!, iso.) & Swynnerton 1926 (BM!, syn.; K!, iso.) Thunbergia zernyi Mildbr. [family ACANTHACEAE], in N.B.G.B. 15: 635 (1941); Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 507 (1997). Type: Tanzania, WSW of Songea, Ugano, Zerny 205 (W!, holo.) Thunbergia torrei Benoist [family ACANTHACEAE], in Notul. Syst. 11: 147 (1944); Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 507 (1997). Type: Mozambique, Nampula, Torre 1300 (COI!, holo.; COI!, LISC!, iso.) Thunbergia sp. near cordata [family ACANTHACEAE], sensu Jex-Blake, Gard. E. Afr. (ed. 3): 209 & pl. 19, fig 4 (1950) & Gard. E. Afr. (ed. 4): 228 (1957) Thunbergia natalensis [family ACANTHACEAE], [sensu U.K.W.F.: 578 (1974) & U.K.W.F., ed. 2: 266 (1994), non Hook. f. (1858)]
Information
Erect or straggling perennial or shrubby herb from creeping rootstock with fleshy roots; stems to 1.5 m long, quadrangular, glabrous to puberulous, with or without conspicuous bands of glossy setose hairs at nodes. Leaves thin, glossy, palmately veined; petiole (0.5–)1–13 cm long on vegetative leaves, glabrous to puberulous, distinctly ciliate or not; lamina ovate to cordiform or broadly so, largest (5–)6.5–17≈(3–)4.5–10 cm, apex acute to acuminate (rarely obtuse), apiculate, base subcordate to deeply cordate with rounded, hastate or sagittate lobes (rarely truncate), margin entire to grossly and irregularly dentate, glabrous to puberulous, often only on veins, rarely with longer glossy setose hairs. Flowers solitary (rarely paired) or from lower axils in racemes with small ovate sessile bracts; pedicels 1.5–5(–10 in fruit) cm long in solitary flowers and 0.5–2(–5 in fruit) cm in racemes, glabrous to puberulous (rarely with a few long glossy glandular hairs); bracteoles green, with conspicuous raised dark green reticulation, ovate-oblong, 0.9–2.2≈0.4–1.2 cm, acute, with sparse to dense long (to 1.5 mm) glossy glandular hairs on veins and margins. Calyx glabrous or minutely puberulous, 1–2(–5 in fruit) mm high of which the broadly triangular lobes about half. Corolla limb and upper part of tube dark bluish purple or royal blue, lower part of tube white, throat yellow; tube (3.2–)3.5–5 cm long; lobes 1–1.8≈1.5–2.5 cm. Filaments 9–13 mm long, glabrous; anthers 2–2.5 mm long. Style with scattered glands. Capsule 8–13 mm in diameter, beak 13–18 mm, long. Seed dark reddish brown, ± 5 mm in diameter, reticulate to spinulose near apex.
Range
DISTR. U 2, 4; K 1, 4, 7; T 3, 4, 6–8
Altitude range
600–1550(–2200) m
Distribution
KENYA Northern Frontier District Marsabit, 14 May 1970, Magogo 1310!KENYA Meru District Meru, 16 June 1932, Graham 1757! & Nyambeni [Jombeni] River, Dec. 1939, Copley in Bally 515!TANZANIA Lushoto District E Usambara Mts, Derema–Singale, 30 Jan. 1932, Greenway 2909!TANZANIA Buha District Gombe National Park, Rutanga Valley, 21 Jan. 1964, Pirozynski 264!TANZANIA Songea District Matengo Hills, 5 km E of Ndengo, 6 March 1956, Milne-Redhead & Taylor 9043!UGANDA Bunyoro District Budongo Forest, Kanyo, June 1932, C.M. Harris in Brasnett 830! & Rabongo Forest, 24 July 1964, H.E. Brown 2103!UGANDA Mengo District Entebbe, 1909, Fyffe 51!
Distribution (external)
Sudan Congo-Kinshasa Burundi Zambia Malawi Mozambique Zimbabwe
Notes
Some collections from K 4 have petioles only 0.5–1 cm long. They differ fromT. natalensis in being completely glabrous. The only totally glabrous form ofT. natalensis has a white corolla.
Thunbergia petersiana Lindau [family ACANTHACEAE]
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