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Euphorbia oatesii Rolfe [family EUPHORBIACEAE]
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 9, Part 5, (2001) Author: S. Carter & L.C. Leach
Names
Euphorbia oatesii Rolfe [family EUPHORBIACEAE], in Oates, Matabeleland Victoria Falls, ed. 2, appendix V: 408 (1889). —N.E. Br. in F.T.A. 6, 1: 522 (1911). —Eyles in Trans. Roy. Soc. South Africa 5: 400 (1916). Syntypes: Zambia, Chilanga, fl. 9.ix.1909, Rogers 8466 (K). Zimbabwe, Matabeleland, fl. 1878, Oates (K); 160 km northeast of Bulawayo, Rand 218 (not traced).
Information
Perennial herb; rootstock large tuberous, producing several woody subterranean stems up to 1.5 cm thick branching at ground-level; branches erect, up to c. 10(20) cm high, or decumbent to 30 cm long, usually woody or sometimes herbaceous when produced after annual fires, shortly pubescent with crisped hairs.Leaves with a puberulous petiole to 5 mm long; stipules small, glandular, reddish; lamina to 70 × 9 mm, usually much less, linear-lanceolate, acute apiculate at the apex, rounded at the base, entire, midrib prominent beneath, margin and midrib beneath usually pubescent especially towards the base.Cymes reduced to solitary cyathia terminating leafy branches.Cyathia on pubescent peduncles 1–3(5) cm long, 4.6 × 7 mm, with cup-shaped involucres, pubescent with spreading crisped hairs; glands 5(6), distant, pink, c. 1.5 × 2.2 mm, transversely elliptic, markedly 2-lipped to funnel-shaped with a transverse opening, margins entire; lobes c. 1.75 × 2.5 mm, transversely rectangular, margin deeply toothed, ciliate.Male flowers many: bracteoles laciniate, feathery; stamens 4.5 mm long, with pedicels usually pubescent at the apex.Female flower: styles 2 mm long, pubescent, joined to halfway, with spreading recurved shortly bifid apices, channelled on the upper (inner) surface.Capsule subsessile, shallowly 3-lobed, 5 × 7 mm, densely pubescent.Seeds 3.5 × 3.2 mm, subglobose, very obtusely pointed at the apex, smooth, brown speckled.
Habitat
In sandy soil in grassland and open Brachystegia woodland
Range
Not known elsewhere
Altitude range
850–1370 m.
1370
850
Distribution
Zimbabwe C Kadoma Distr., Silverstream Ranch, south of Ngesi, fl. 16.i.1962, Wild 5609 (K; SRGH).Zimbabwe W Binga Distr., Chebira Hot Spring, fl. x.1948, Whellan 390 (K; MAL; SRGH).Zambia S Namwala Distr., 7 km from Namwala on Ngoma road, fl. & fr. 8.xii.1962, van Rensburg 1041 (K; SRGH).Zambia C Lusaka Distr., Chakwenga Headwaters, 160–205 km east of Lusaka, fl. 29.ix.1963, E.A. Robinson 5673 (K; SRGH).Zambia W Chingola, fl. & fr. 8.x.1954, Fanshawe 1591 (K; SRGH).Zimbabwe N Hurungwe Distr., Musukwi (Msukwe) R., Kanyanga Stream, fl. & fr. 18.xi.1953, Wild 4175 (K; LISC; SRGH).Zambia B Kaoma Distr., 80 km west of Kafue Hoek pontoon on road to Kaoma (Mankoya), fl. & fr. 7.xi.1959, Drummond & Cookson 6219 (K; LISC; SRGH).
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 9, Part 5, (2001) Author: S. Carter & L.C. Leach
Names
Euphorbia oatesii Rolfe [family EUPHORBIACEAE], in Oates, Matabeleland Victoria Falls, ed. 2, appendix V: 408 (1889). —N.E. Br. in F.T.A. 6, 1: 522 (1911). —Eyles in Trans. Roy. Soc. South Africa 5: 400 (1916). Syntypes: Zambia, Chilanga, fl. 9.ix.1909, Rogers 8466 (K). Zimbabwe, Matabeleland, fl. 1878, Oates (K); 160 km northeast of Bulawayo, Rand 218 (not traced).
Information
Perennial herb; rootstock large tuberous, producing several woody subterranean stems up to 1.5 cm thick branching at ground-level; branches erect, up to c. 10(20) cm high, or decumbent to 30 cm long, usually woody or sometimes herbaceous when produced after annual fires, shortly pubescent with crisped hairs.Leaves with a puberulous petiole to 5 mm long; stipules small, glandular, reddish; lamina to 70 × 9 mm, usually much less, linear-lanceolate, acute apiculate at the apex, rounded at the base, entire, midrib prominent beneath, margin and midrib beneath usually pubescent especially towards the base.Cymes reduced to solitary cyathia terminating leafy branches.Cyathia on pubescent peduncles 1–3(5) cm long, 4.6 × 7 mm, with cup-shaped involucres, pubescent with spreading crisped hairs; glands 5(6), distant, pink, c. 1.5 × 2.2 mm, transversely elliptic, markedly 2-lipped to funnel-shaped with a transverse opening, margins entire; lobes c. 1.75 × 2.5 mm, transversely rectangular, margin deeply toothed, ciliate.Male flowers many: bracteoles laciniate, feathery; stamens 4.5 mm long, with pedicels usually pubescent at the apex.Female flower: styles 2 mm long, pubescent, joined to halfway, with spreading recurved shortly bifid apices, channelled on the upper (inner) surface.Capsule subsessile, shallowly 3-lobed, 5 × 7 mm, densely pubescent.Seeds 3.5 × 3.2 mm, subglobose, very obtusely pointed at the apex, smooth, brown speckled.
Habitat
In sandy soil in grassland and open Brachystegia woodland
Range
Not known elsewhere
Altitude range
850–1370 m.
1370
850
Distribution
Zimbabwe C Kadoma Distr., Silverstream Ranch, south of Ngesi, fl. 16.i.1962, Wild 5609 (K; SRGH).Zimbabwe W Binga Distr., Chebira Hot Spring, fl. x.1948, Whellan 390 (K; MAL; SRGH).Zambia S Namwala Distr., 7 km from Namwala on Ngoma road, fl. & fr. 8.xii.1962, van Rensburg 1041 (K; SRGH).Zambia C Lusaka Distr., Chakwenga Headwaters, 160–205 km east of Lusaka, fl. 29.ix.1963, E.A. Robinson 5673 (K; SRGH).Zambia W Chingola, fl. & fr. 8.x.1954, Fanshawe 1591 (K; SRGH).Zimbabwe N Hurungwe Distr., Musukwi (Msukwe) R., Kanyanga Stream, fl. & fr. 18.xi.1953, Wild 4175 (K; LISC; SRGH).Zambia B Kaoma Distr., 80 km west of Kafue Hoek pontoon on road to Kaoma (Mankoya), fl. & fr. 7.xi.1959, Drummond & Cookson 6219 (K; LISC; SRGH).
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 9, Part 5, (2001) Author: S. Carter & L.C. Leach
Names
Euphorbia oatesii Rolfe [family EUPHORBIACEAE], in Oates, Matabeleland Victoria Falls, ed. 2, appendix V: 408 (1889). —N.E. Br. in F.T.A. 6, 1: 522 (1911). —Eyles in Trans. Roy. Soc. South Africa 5: 400 (1916). Syntypes: Zambia, Chilanga, fl. 9.ix.1909, Rogers 8466 (K). Zimbabwe, Matabeleland, fl. 1878, Oates (K); 160 km northeast of Bulawayo, Rand 218 (not traced).
Information
Perennial herb; rootstock large tuberous, producing several woody subterranean stems up to 1.5 cm thick branching at ground-level; branches erect, up to c. 10(20) cm high, or decumbent to 30 cm long, usually woody or sometimes herbaceous when produced after annual fires, shortly pubescent with crisped hairs.Leaves with a puberulous petiole to 5 mm long; stipules small, glandular, reddish; lamina to 70 × 9 mm, usually much less, linear-lanceolate, acute apiculate at the apex, rounded at the base, entire, midrib prominent beneath, margin and midrib beneath usually pubescent especially towards the base.Cymes reduced to solitary cyathia terminating leafy branches.Cyathia on pubescent peduncles 1–3(5) cm long, 4.6 × 7 mm, with cup-shaped involucres, pubescent with spreading crisped hairs; glands 5(6), distant, pink, c. 1.5 × 2.2 mm, transversely elliptic, markedly 2-lipped to funnel-shaped with a transverse opening, margins entire; lobes c. 1.75 × 2.5 mm, transversely rectangular, margin deeply toothed, ciliate.Male flowers many: bracteoles laciniate, feathery; stamens 4.5 mm long, with pedicels usually pubescent at the apex.Female flower: styles 2 mm long, pubescent, joined to halfway, with spreading recurved shortly bifid apices, channelled on the upper (inner) surface.Capsule subsessile, shallowly 3-lobed, 5 × 7 mm, densely pubescent.Seeds 3.5 × 3.2 mm, subglobose, very obtusely pointed at the apex, smooth, brown speckled.
Habitat
In sandy soil in grassland and open Brachystegia woodland
Range
Not known elsewhere
Altitude range
850–1370 m.
1370
850
Distribution
Zimbabwe C Kadoma Distr., Silverstream Ranch, south of Ngesi, fl. 16.i.1962, Wild 5609 (K; SRGH).Zimbabwe W Binga Distr., Chebira Hot Spring, fl. x.1948, Whellan 390 (K; MAL; SRGH).Zambia S Namwala Distr., 7 km from Namwala on Ngoma road, fl. & fr. 8.xii.1962, van Rensburg 1041 (K; SRGH).Zambia C Lusaka Distr., Chakwenga Headwaters, 160–205 km east of Lusaka, fl. 29.ix.1963, E.A. Robinson 5673 (K; SRGH).Zambia W Chingola, fl. & fr. 8.x.1954, Fanshawe 1591 (K; SRGH).Zimbabwe N Hurungwe Distr., Musukwi (Msukwe) R., Kanyanga Stream, fl. & fr. 18.xi.1953, Wild 4175 (K; LISC; SRGH).Zambia B Kaoma Distr., 80 km west of Kafue Hoek pontoon on road to Kaoma (Mankoya), fl. & fr. 7.xi.1959, Drummond & Cookson 6219 (K; LISC; SRGH).
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