Compilation
Thyella tamnifolia

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Name

Identification
Thyella tamnifolia (L.) Raf. [family CONVOLVULACEAE ]
Related name
  • Thyella tamnifolia

Flora

Entry for JACQUEMONTIA tamnifolia (L.) Griseb. [family CONVOLVULACEAE]
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, (1963) Author: B. VERDCOURT (East African Herbarium)
Names
JACQUEMONTIA tamnifolia (L.) Griseb. [family CONVOLVULACEAE], Fl. Brit. W. Ind. : 474 (1861); E. A. Bruce in K.B. 1940 : 63 (1940); U.O.P.Z. : 314 (1949); Meeuse in Bothalia 6 : 700 (1958). Type : U.S.A., Carolina : illustration of Volubilis carolinensis tamnifolio subhirsuto in Dill., Hort. Elth., t. 318, fig. 410 (1732). (No specimen in OXF).
Ipomoea tamnifolia L. [family CONVOLVULACEAE], Sp. Pl. : 162 (1753)
Convolvulus capitatus Desr. [family CONVOLVULACEAE], in Lam., Encycl. 3 : 554 (1791). Type : Senegal, Geoffroy (P–J, holo.!)
Convolvulus guineënsis Schumach. [family CONVOLVULACEAE], in Schumach. & Thonn., Beskr. Guin. Pl. : 90 (1827). Type : Ghana, without locality (C, holo. !)
Jacquemontia capitata (Desr.) G. Don [family CONVOLVULACEAE], Gen. Syst. 4 : 283 (1837); Bak. & Rendle in F.T.A. 4 (2) : 85 (1905); F.W.T.A. : 211 (1931)
Ipomoea guineënsis (Schumach.) G. Don [family CONVOLVULACEAE], Gen. Syst. 4 : 269 (1837)
Thyella tamnifolia (L.) Raf. [family CONVOLVULACEAE], Fl. Tell. 4 : 84 (1838)
Ipomoea capitata (Desr.) Choisy [family CONVOLVULACEAE], in DC., Prodr. 9 : 365 (1845)
Convolvulus pycnanthus Choisy [family CONVOLVULACEAE], in DC., Prodr. 9 : 365 (1845). Type : Sudan Republic, Kordofan, Hogel, Kotschy 212 (G, holo. !, BM, iso.!)
Information
Annual twiner; stems adpressed pilose with silky hairs. Leaf-blade ovate, up to 6 cm. long and wide, acute to acuminate at the apex, acute to cordate at the base, sparingly adpressed pilose above and below, or glabrescent; petiole about 3.5 cm. long. Flowers in dense hairy capitate cymes 2–3 cm. across, of a ferrugineous colour when dry; peduncles up to 15 cm. long, silky pilose above. Outer bracts similar to the leaves but smaller, about 2 cm. long; inner becoming smaller and more hairy inwards, lanceolate or linear. Sepals lanceolate, acute, subequal, densely and softly hairy, 5–7 mm. long. Corolla blue, 1 cm. long. Capsule 4–5 mm. in diameter, straw-coloured. Seeds 4, brown, scabridulous, 2 mm. long. Fig. 10, p. 36.
Range
DISTR. U1; K7; T3, 6–8; Z; P Sudan Republic & West Africa to Angola, South West & South Africa, Madagascar, Mascarene Is. and tropical America
Altitude range
60–900 m.
Distribution
KENYA Kilifi District Kibarani, 24 Feb. 1945, Jeffery 98 ! & Arabuko, Graham 1902 !TANGANYIKA Tanga District E. Usambara foothills, Sigi Valley, 30 May 1950, Verdcourt 245 ! ;TANGANYIKA Ulanga District Ruhudje, Masagati, June 1931, Schlieben 1117 ! ;TANGANYIKA Lindi District Nachingwea, 8 Oct. 1951, Evans 3 !UGANDA West Nile District 1.3 km. NW. of Ojuku Hill, 25 July 1953, Chancellor 47 ! & West Madi, Sept. 1940, Purseglove 1014 !ZANZIBAR Zanzibar I. , Kizimbani, 15 Jan. 1951, Oxtoby K 10 ! & without locality, Last !ZANZIBAR Pemba I. , Fufuni, 17 Dec. 1930, Greenway 2742 !
Notes
VARIATION. Schlieben 1117 bears the MS. name J. capitata var. leucotricha Pilger. It does not appear to differ appreciably from the other specimens all of which are white-haired in life. Evans 3 has smaller cuneate leaves, smaller inflorescences and wider sepals but I do not consider it worthy of recognition.

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