Compilation
Ipomoea trematosperma

15 Images see all

Previous
Next

Name

Identification
Isotype of Ipomoea trematosperma Choisy [family CONVOLVULACEAE ] Verified by Not on sheet, Ipomoea eriocarpa R.Br. [family CONVOLVULACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Ipomoea eriocarpa
  • Ipomoea hispida
  • Ipomoea trematosperma

Flora

Entry for IPOMOEA eriocarpa R. Br. [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
IPOMOEA eriocarpa R. Br. [family CONVOLVULACEAE], Prodr. : 484 (1810); Bak. & Rendle in F.T.A. 4 (2) : 136 (1905); van Ooststr. in Fl. Males., ser. 1, 4 (4) : 462, fig. 35 (1953); Meeuse in Bothalia 6 : 722 (1958). Type : Australia, “ New Holland ”, Banks & Solander (BM, holo.!)
Convolvulus hispidus Vahl [family CONVOLVULACEAE], Symb. Bot. 3 : 29 (1794). Type : “India orientali”, Dahl (not located)
Ipomoea hispida (Vahl) Roem. & Schultes [family CONVOLVULACEAE], Syst. 4 : 238 (1819); F.W.T.A. 2 : 216 (1931), non Zucc. (1806), nom. illegit.
Ipomoea sessiliflora Roth [family CONVOLVULACEAE], Nov. Pl. Sp.: 116 (1821). Type : “ ex India orientalis ”, Heyne (G, iso. !)
Ipomoea trematosperma Choisy [family CONVOLVULACEAE], in DC., Prodr. 9 : 367 (1845). Type : Sudan Republic, Kordofan, Milbes, Kotschy 289 (G, holo.!, BM, iso. !)
Information
Annual; stems twining, pubescent or hispid, covered with both long and short hairs. Leaf-blade ovate-cordate to linear-oblong, 2.5–8 cm. long, 0.8–4 cm. wide, usually subhastate at the base with rounded lobes, pilose to glabrescent; petiole 1–4.5 cm. long. Inflorescences 3–many-flowered, very rarely only 1-flowered, axillary, subsessile or peduncle up to 1 cm. long; bracts linear; pedicels about 5 mm. long. Sepals ovate, acuminate at the apex, hispid-pilose, spreading in young fruit; basal part 5 mm. long, 3–4 mm. wide; apical part 4 mm. long, 0.5 mm. wide. Corolla mauve, white, pink or white with a mauve centre, 6–9 mm. long, 13 mm. across (up to 1.55 cm. long when flattened out). Capsule 5–6 mm. in diameter, pubescent (Fig. 22/5, p. 102). Seeds black, finely punctate, glabrous, 2.5 mm. long (Fig. 24/4, p. 131.)
Range
DISTR. U1–4; K4, 5, 7; T1, 2, 4, 6–8; Z; P tropical Africa to Transvaal,
Altitude range
0–1350 m.
Distribution
KENYA S. Kavirondo District 48 km. from Isebania on Kisumu road, 19 July, 1960, Verdcourt 2915 ! ;KENYA Teita District Voi, 12 May 1931, Napier 1049 ! ;KENYA Kilifi District Vipingo, 35 km. N. of Mombasa, 18 Dec. 1953, Verdcourt 1089 !TANGANYIKA Mwanza District Ukiriguru, 28 Mar. 1945, Wallace 1242!TANGANYIKA Kigoma, 9 Apr. 1945, Wallace 1237 ! ;TANGANYIKA Lindi District Nachingwea, 29 Apr. 1953, Anderson 884!UGANDA Kigezi District Bugangari, Feb. 1950, Purseglove 3305! ;UGANDA Bunyoro District Murchison Falls, Jan. 1951, Jex Blake in E.A.H. 10087 ! ;UGANDA Teso District Serere, Dec. 1931, Chandler 187 !ZANZIBAR Zanzibar I. , without locality, G. de C. Taylor 108! & Mahonda, 25 Sept. 1960, Faulkner 2718 !ZANZIBAR Pemba I. , Makongwe, 10 Aug. 1929, Vaughan 490 !
Distribution (external)
Madagascar
Egypt
tropical Asia
N. Australia
Notes
Koritschoner 3093 from Tanganyika (Shinyanga) has very large ovate leaves, 10.5 cm. long and 6.6 cm. wide which are almost glabrous, but it is only an extreme variant. Greenway 7458 (Tanganyika, Mbulumbul) is very similar to I. tenuirostris but has several characters of the present species—the corolla is small, 13 mm. long and the indumentum hispid; the peduncles are intermediate in length. It is possibly a hybrid between the two species and is best left undescribed until this hypothesis can be checked. Maitland 1925 (Uganda, Katera) and I. carsonii Bak. from Northern Rhodesia (based on a poor unicate specimen) are possibly of similar origin and almost identical, so far as one can tell. I. morsonii Bak. and I. leptocaulos Hall.f. from West Africa are also allied.

Related Materials