Edit History
Ipomoea holubii [family CONVOLVULACEAE]
Date Updated: 19 August 2007
Herbarium
South African National Biodiversity Institute, Compton Herbarium, Cape Town (SAM)
Collection
Flora of Southern Africa
Resource Type
Reference Sources
Entry From
Flora of South Africa, (2003) Author: Dr J.P. Roux
Names
Ipomoea holubii [family CONVOLVULACEAE]
Common names
Rivea holubii (Baker) Hallier f.: 25 (1910). Type as above. Turbina holubii (Baker) A.Meeuse: 780 (1957a); A.Meeuse: t. 1271 (1958b); A.Fabian & Germish.: 336, t. 160e (1997); Retief & P.P.J.Herman: 387 (1997). Type as above.
Information
Much-branched shrub up to 2.5 m high. Stems woody, many from base, covered with a light grey bark, sinuous, tips decumbent or climbing. Leaves deciduous, ovate-cordate to orbicular-cordate, 10-80 x 7.5-50.0 mm, entire, often folded along midrib, apex obtuse or subÂacute, deflexed, base mostly widely cordate, sericeous to tomentose on both surfaces, more densely so beneath; petiole pubescent, 4-25 mm long. Inflorescence axillary, 1-5-flowered, sometimes forming a kind of leafy panicle at tips of branches; peduncle 25-90 mm long, hairy; pedicels 8-30 mm long, hairy; bracteoles hairy, 2.5-15.0 mm long, often numerous and forming a kind of involucre at base of cyme and then one bracteole foliaceous and up to 40 x 20 mm. Calyx 6-16 mm long, usually greyish pubescent to tomentose, unequal, elliptic to obovate-spathulate, outer sepals smaller than inner ones, all accrescent in fruit, then glabresÂcent and brown. Corolla funnel-shaped, 40-50 mm long, pale mauve or pinkish with magenta centre, limb spreading horizontally up to ± 60 mm wide; midpetaline areas strigose outside. Capsule with thin leathery pericarp, ellipsoid, apiculate, 8-10 mm long. Seed single, ellipsoid, ± 7 mm long, glabrous, light brown. Flowering time November to May.
Habitat
Distinguished by its shrubby habit, its often folded deciduous leaves and greyish, elliptic to obovate-spathulate sepals.
Use
52. Ipomoea holubii Baker in Kew Bulletin 1894: 72 (1894); Baker & Rendle: 188 (1905-06); A.Meeuse & W.G.Welman: 47 (1996). Type: Botswana, Leshumo Valley, Ho-lub 512 (K, hole).
Range
Occurs in Malawi, Zambia, Zimbabwe, Mozambique, Namibia, Botswana and mainly the Northern Province. Grows in bushveld and grassland, also along roadsides and often on rocky soil. Map 71.
Date Updated: 19 August 2007
Herbarium
South African National Biodiversity Institute, Compton Herbarium, Cape Town (SAM)
Collection
Flora of Southern Africa
Resource Type
Reference Sources
Entry From
Flora of South Africa, (2003) Author: Dr J.P. Roux
Names
Ipomoea holubii [family CONVOLVULACEAE]
Common names
Rivea holubii (Baker) Hallier f.: 25 (1910). Type as above. Turbina holubii (Baker) A.Meeuse: 780 (1957a); A.Meeuse: t. 1271 (1958b); A.Fabian & Germish.: 336, t. 160e (1997); Retief & P.P.J.Herman: 387 (1997). Type as above.
Information
Much-branched shrub up to 2.5 m high. Stems woody, many from base, covered with a light grey bark, sinuous, tips decumbent or climbing. Leaves deciduous, ovate-cordate to orbicular-cordate, 10-80 x 7.5-50.0 mm, entire, often folded along midrib, apex obtuse or subÂacute, deflexed, base mostly widely cordate, sericeous to tomentose on both surfaces, more densely so beneath; petiole pubescent, 4-25 mm long. Inflorescence axillary, 1-5-flowered, sometimes forming a kind of leafy panicle at tips of branches; peduncle 25-90 mm long, hairy; pedicels 8-30 mm long, hairy; bracteoles hairy, 2.5-15.0 mm long, often numerous and forming a kind of involucre at base of cyme and then one bracteole foliaceous and up to 40 x 20 mm. Calyx 6-16 mm long, usually greyish pubescent to tomentose, unequal, elliptic to obovate-spathulate, outer sepals smaller than inner ones, all accrescent in fruit, then glabresÂcent and brown. Corolla funnel-shaped, 40-50 mm long, pale mauve or pinkish with magenta centre, limb spreading horizontally up to ± 60 mm wide; midpetaline areas strigose outside. Capsule with thin leathery pericarp, ellipsoid, apiculate, 8-10 mm long. Seed single, ellipsoid, ± 7 mm long, glabrous, light brown. Flowering time November to May.
Habitat
Distinguished by its shrubby habit, its often folded deciduous leaves and greyish, elliptic to obovate-spathulate sepals.
Use
52. Ipomoea holubii Baker in Kew Bulletin 1894: 72 (1894); Baker & Rendle: 188 (1905-06); A.Meeuse & W.G.Welman: 47 (1996). Type: Botswana, Leshumo Valley, Ho-lub 512 (K, hole).
Range
Occurs in Malawi, Zambia, Zimbabwe, Mozambique, Namibia, Botswana and mainly the Northern Province. Grows in bushveld and grassland, also along roadsides and often on rocky soil. Map 71.
╳
We're sorry. You don't appear to have permission to access the item.
Full access to these resources typically requires affiliation with a partnering organization. (For example, researchers are often granted access through their affiliation with a university library.)
If you have an institutional affiliation that provides you access, try logging in via your institution
Have access with an individual account? Login here
If you would like to learn more about access options or believe you received this message in error, please contact us.