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Convolvulus schweinfurthii

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Convolvulus farinosus L. [family CONVOLVULACEAE]

Isotype of Convolvulus schweinfurthii Engl. [family CONVOLVULACEAE]

Type of Convolvulus schweinfurthii Engl. [family CONVOLVULACEAE]

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Name

Identification

Convolvulus schweinfurthii Engl. [family CONVOLVULACEAE ] (stored under name); Verified by Engler, 1892

Flora

Entry for CONVOLVULUS farinosus L. [family CONVOLVULACEAE]

Royal Botanic Gardens, Kew (K)

Flora of Tropical East Africa

Reference Sources

Flora of Tropical East Africa, page 1, (1963) Author: B. VERDCOURT (East African Herbarium)

CONVOLVULUS farinosus L. [family CONVOLVULACEAE], Mant. 2 : 203 (1771); Bak. & Rendle in F.T.A. 4 (2) : 98 (1905); Meeuse in Bothalia 6 : 684 (1958). Type : Sweden, a specimen cultivated in Uppsala, specimen 218.6 (LINN, lecto.!)

CONVOLVULUS quinqueflorus Vahl [family CONVOLVULACEAE], Symb. 3 : 31 (1794). Type : Bourbon, ex Herb. Thouin (C, holo.!)

CONVOLVULUS cordifolius Thunb. [family CONVOLVULACEAE], Prodr. : 35 (1794). Type : South Africa, “ Cape of Good Hope ”, Thunberg (U, holo.!)

CONVOLVULUS penicellatus A. Rich. [family CONVOLVULACEAE], Tent. Fl. Abyss. 2 : 74 (1851). Type : Ethiopia, Tigré, Tcheleukote, Quartin Dillon (P, holo.!)

CONVOLVULUS schweinfurthii Engl. [family CONVOLVULACEAE], Hochgeb. Trop. Afr. : 348 (1892). Type : Ethiopia, Anedehr, Schimper 599 (B, holo.†, BM, iso. !)

Perennial; stems twining or prostrate, long-pubescent, velvety silky when young. Leaf-blade triangular-ovate or ovate, rarely lanceolate, up to 6(–7.5) cm. long and 3.8(–4.5) cm. wide, obtuse, acute or apiculate at the apex, subsagittate or cordate at the base, ± shallowly crenate, shortly pubescent; petiole up to 4.5 cm. long. Inflorescence 1–6-flowered; peduncle up to 4.5(–6) cm. long; pedicels up to 1.5 cm. long; bracts minute. Sepalsovate-orbicular, ovate or elliptic, 6–7(–9) mm. long, 3–4.5 (–5) mm. wide, acute, ± coriaceous; outer often pubescent all over; inner pubescent in middle only, or all sepals only ciliate, often purplish at the tips. Corolla white or tinged pinkish-purple, 11 (–16) mm. long, shortly lobed, pubescent at the tips. Capsule 5–8 mm. in diameter, globose, pale brown. Seeds globose, subtrigonous, black, 3.5–4 mm. long, 2.5 mm. wide.

DISTR. U2; K3, 4, 6; T1–3, 7

KENYA Kiambu District Muguga, 20 June 1953, Verdcourt 987 !KENYA Nairobi, 10 Oct. 1930, Napier 456 !KENYA Meru, May 1951, Hancock 54 !, 126 !TANGANYIKA Arusha, 5 Mar. 1954, C. van Someren H110/54!;TANGANYIKA Moshi District Lyamungu, 16 Feb. 1942, Wallace 1049 ! ;TANGANYIKA Lushoto District Usambara Mts., Holst 672!UGANDA Kigezi District Kachwekano Farm, July 1949, Purseglove 2974! & Mt. Mgahinga, June 1951, Purseglove 3709 ! ;UGANDA Toro District Ibanda, Mubuku Valley, 7 Sept. 1952, Ross 1037 !

Distribution (external)

western Mediterranean

All authors have mistakenly referred C. penicellatus A. Rich. to a variety of C. sagittatus presumably because they did not see the type specimen. This specimen and also the original description leave no doubt as to the identity of Richard’s species. The type of C. schweinfurthii has triangular-hastate leaves with concave sides whereas the Linnean type of C. farinosus has more regularly ovate leaves with convex denticulate margins. These two forms are joined by intermediates, e.g. Orde Brown (from Mt. Kenya, Feb. 1914).