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Ipomoea dichroa Hochst. ex Choisy [family CONVOLVULACEAE]

Date Updated: 26 July 2007

Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 8, Part 1, page 9, (1987) Author: Maria Leonor Gonçalves
Names
Ipomoea arachnosperma Welw. [family CONVOLVULACEAE], Phyto-Geogr. Apont.: 588 (1859).—Meeuse in Fl. Pl. Afr. 31: t. 1203 (1956); in Bothalia 6: 736 (1958).—Verdc. in F.T.E.A., Convolvulaceae: 112 (1963).—Roessler in Merxm., Prodr. Fl. SW. Afr. 116: 13 (1967).—Binns, H.C.L.M: 40 (1968).—Jacobsen in Kirkia 9: 171 (1973). Type from Angola. Ipomoea dichroa Hochst. ex Choisy [family CONVOLVULACEAE], in DC., Prodr. 9: 364 (1845).—Verdc. in Kew Bull. 33: 165 (1978). Type from Senegal. Convolvulus bicolor Desr. [family CONVOLVULACEAE], in Lam., Encycl. 3: 564 (1791) non vani (1794), non Ipomoea bicolor Lam. Type as for Ipomoea dichroa. Convolvulus dichrous Roem. & Schultes [family CONVOLVULACEAE], Syst. Veg. 4: 263 (1891) nom. illegit. Type as above. Convolvulus pilosus Roxb. [family CONVOLVULACEAE], Fl. India, ed. Carey & Wall. 2: 55 (1824) nom illegit. non Rottler(1803). Ipomoea pilosa Roxb. Sweet [family CONVOLVULACEAE], Hort. Brit.: 289 (1827) nom. illegit. non Houttuyn (1777).—Hiern, Cat. Afr. Pl. Welw. 1: 735 (1898).—Baker & Rendle in F.T.A. 4, 2: 161 (1905).—Schinz Pl. Menyhart.: 69 (1905).—N.E. Br. in Kew Bull. 1909: 122 (1909).—Gomes e Sousa in Bol. Soc. Est. Moçambique 32: 86 (1936).
Information
Annual resembling Ipomoea ficifolia Lindl. but with smaller flowers. Stems several from the base, twining or occasionally prostrate, up to 2·5 m. long, densely covered with white or yellow bulbous-based patent bristly hairs. Leaf lamina broadly cordate-ovate in outline, up to 18·5–17·5 cm., deeply 3–lobed, rarely entire, acute or acuminate at the apex, thin, green, bristly-pubescent above, covered with dense white-cottony tomentum beneath; petiole 4–10 cm. long. Flowers several in lax cymes; peduncle 1·5–7 cm. long; secondary and tertiary branches 1·5–3 cm. long; bracts ovate-lanceolate with a broad base, long-acuminate to aristate, up to 11 mm. long; pedicels, somewhat flattened, up to 1 cm. long. Sepals subequal, lanceolate, long acuminate or aristate, 1·2–2·5 cm. long, bristly or setose and glandular, accrescent in fruit. Corolla funnel-shaped, pink or mauve with darker mauve centre, 1·4–2·0 cm. long, pubescent on midpetaline areas near the tips of the corolla lobes. Capsule ovoid, pubescent above. Seeds ovoid, black, velvety-white-pubescent.
Habitat
Riverine forest, secondary savanna, grassland, cultivated ground, roadside and sandy soil
Range
Throughout most of tropical Africa and India; extends into Namibia and S. Africa (Transvaal).
Altitude range
0–1830 m. 1830 0
Distribution
Mozambique GI Limpopo, Chicualacuala, fl. & fr. 26.iii.1974, Balsinhas & Santos 2655 (LMA).Malawi S Shire R.,fl.& fr.1863,Kirk s.n.(K).Mozambique MS Chemba, Chiou, Exper. Stat. of C.I.C.A., fl. & fr. 12.iv.1960,Lemos & Macuàcua 82 (BM; COI; K; LISC; LMA; SRGH).Zimbabwe S Beitbridge, Shashi R., c. 3 km. upstream from Tuli Police Camp, fl. & fr. 14.v.1959, Drummond 6144 (K; SRGH).Zimbabwe C Harare, 1463 m., fl. & fr. 27.iii.1929, Eyles 4863 (K; SRGH).Zimbabwe W Hwange, Makwa Pan, 14 km. SE. of Main Camp, Hwange National Park, fl. & fr. 17.iv.1972, Grosvenor 701 (K; SRGH).Zambia S Lusitu, fl. & fr. 19.v.1960, Fanshawe 5680 (K; SRGH).Zambia C Mt. Makulu Research Station, 16 km. S. of Lusaka, fl. & fr. 31.iii.1960, Smartt 4 (K; LISC; SRGH).Zambia W Ndola, fl. & fr. 3.iv.1954, Fanshawe 1044 (K; SRGH).Mozambique T Tete, from Estima to Chinhanda, 1·5 km. from Estima, fl. & fr. 10.iv.1972, Macedo 5176 (K; LISC; LMA; LMU; SRGH).Malawi N from Kondowe to Karonga, 610&1830 m.,fl.& fr.vii.1896, Whytes s.n. (K).Zimbabwe N Mazoe, 1280 m., fl. & fr. iv.1907, Eyles 536 (BM; K; SRGH).Zambia B Sesheke Distr., Kazu Forest, 1180 m., fl. & fr. 9.iv.1955, Exell, Mendonca & Wild 1450 (BM; LISC; SRGH).Botswana N Dindings Isl., fl. & fr. 28.iii.1975, Smith 1312 (K; SRGH).

Date Updated: 26 July 2007

Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 8, Part 1, page 9, (1987) Author: Maria Leonor Gonçalves
Names
Ipomoea arachnosperma Welw. [family CONVOLVULACEAE], Phyto-Geogr. Apont.: 588 (1859).—Meeuse in Fl. Pl. Afr. 31: t. 1203 (1956); in Bothalia 6: 736 (1958).—Verdc. in F.T.E.A., Convolvulaceae: 112 (1963).—Roessler in Merxm., Prodr. Fl. SW. Afr. 116: 13 (1967).—Binns, H.C.L.M: 40 (1968).—Jacobsen in Kirkia 9: 171 (1973). Type from Angola. Ipomoea dichroa Hochst. ex Choisy [family CONVOLVULACEAE], in DC., Prodr. 9: 364 (1845).—Verdc. in Kew Bull. 33: 165 (1978). Type from Senegal. Convolvulus bicolor Desr. [family CONVOLVULACEAE], in Lam., Encycl. 3: 564 (1791) non vani (1794), non Ipomoea bicolor Lam. Type as for Ipomoea dichroa. Convolvulus dichrous Roem. & Schultes [family CONVOLVULACEAE], Syst. Veg. 4: 263 (1891) nom. illegit. Type as above. Convolvulus pilosus Roxb. [family CONVOLVULACEAE], Fl. India, ed. Carey & Wall. 2: 55 (1824) nom illegit. non Rottler(1803). Ipomoea pilosa Roxb. Sweet [family CONVOLVULACEAE], Hort. Brit.: 289 (1827) nom. illegit. non Houttuyn (1777).—Hiern, Cat. Afr. Pl. Welw. 1: 735 (1898).—Baker & Rendle in F.T.A. 4, 2: 161 (1905).—Schinz Pl. Menyhart.: 69 (1905).—N.E. Br. in Kew Bull. 1909: 122 (1909).—Gomes e Sousa in Bol. Soc. Est. Moçambique 32: 86 (1936).
Information
Annual resembling Ipomoea ficifolia Lindl. but with smaller flowers. Stems several from the base, twining or occasionally prostrate, up to 2·5 m. long, densely covered with white or yellow bulbous-based patent bristly hairs. Leaf lamina broadly cordate-ovate in outline, up to 18·5–17·5 cm., deeply 3–lobed, rarely entire, acute or acuminate at the apex, thin, green, bristly-pubescent above, covered with dense white-cottony tomentum beneath; petiole 4–10 cm. long. Flowers several in lax cymes; peduncle 1·5–7 cm. long; secondary and tertiary branches 1·5–3 cm. long; bracts ovate-lanceolate with a broad base, long-acuminate to aristate, up to 11 mm. long; pedicels, somewhat flattened, up to 1 cm. long. Sepals subequal, lanceolate, long acuminate or aristate, 1·2–2·5 cm. long, bristly or setose and glandular, accrescent in fruit. Corolla funnel-shaped, pink or mauve with darker mauve centre, 1·4–2·0 cm. long, pubescent on midpetaline areas near the tips of the corolla lobes. Capsule ovoid, pubescent above. Seeds ovoid, black, velvety-white-pubescent.
Habitat
Riverine forest, secondary savanna, grassland, cultivated ground, roadside and sandy soil
Range
Throughout most of tropical Africa and India; extends into Namibia and S. Africa (Transvaal).
Altitude range
0–1830 m. 1830 0
Distribution
Mozambique GI Limpopo, Chicualacuala, fl. & fr. 26.iii.1974, Balsinhas & Santos 2655 (LMA).Malawi S Shire R.,fl.& fr.1863,Kirk s.n.(K).Mozambique MS Chemba, Chiou, Exper. Stat. of C.I.C.A., fl. & fr. 12.iv.1960,Lemos & Macuàcua 82 (BM; COI; K; LISC; LMA; SRGH).Zimbabwe S Beitbridge, Shashi R., c. 3 km. upstream from Tuli Police Camp, fl. & fr. 14.v.1959, Drummond 6144 (K; SRGH).Zimbabwe C Harare, 1463 m., fl. & fr. 27.iii.1929, Eyles 4863 (K; SRGH).Zimbabwe W Hwange, Makwa Pan, 14 km. SE. of Main Camp, Hwange National Park, fl. & fr. 17.iv.1972, Grosvenor 701 (K; SRGH).Zambia S Lusitu, fl. & fr. 19.v.1960, Fanshawe 5680 (K; SRGH).Zambia C Mt. Makulu Research Station, 16 km. S. of Lusaka, fl. & fr. 31.iii.1960, Smartt 4 (K; LISC; SRGH).Zambia W Ndola, fl. & fr. 3.iv.1954, Fanshawe 1044 (K; SRGH).Mozambique T Tete, from Estima to Chinhanda, 1·5 km. from Estima, fl. & fr. 10.iv.1972, Macedo 5176 (K; LISC; LMA; LMU; SRGH).Malawi N from Kondowe to Karonga, 610&1830 m.,fl.& fr.vii.1896, Whytes s.n. (K).Zimbabwe N Mazoe, 1280 m., fl. & fr. iv.1907, Eyles 536 (BM; K; SRGH).Zambia B Sesheke Distr., Kazu Forest, 1180 m., fl. & fr. 9.iv.1955, Exell, Mendonca & Wild 1450 (BM; LISC; SRGH).Botswana N Dindings Isl., fl. & fr. 28.iii.1975, Smith 1312 (K; SRGH).
Ipomoea dichroa Hochst. ex Choisy [family CONVOLVULACEAE]
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