Edit History
SEBAEA R. Br. [family GENTIANACEAE]
Date Updated: 19 August 2007
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, (2002) Author: SILESHI NEMOMISSA
Names
SEBAEA R. Br. [family GENTIANACEAE], Prodr. Fl. Nov. Holl.: 451 (1810); Griseb., Gen. Sp. Gent.: 164 (1839); D.C., Prodr. 9: 52 (1845) (including Belmontia and Exochaenium); G.P. 2: 804 (1876) (including Belmontia); Gilg in E. & P.Pf. 4 (2): 64 (1895) (including Belmontia and Lagenia); Schinz in Mitt. Geogr. Ges. Lübeck 17: 125 (1903) & in Bull. Herb. Boiss., sér.2, 6: 714 (1906); A.W. Hill in K.B. 1908: 317 (1908); Marais in Bothalia 7: 464 (1961)
Information
Annual or perennial herbs, rarely parasitic or saprophytic. Stem erect or procumbent, simple or branched from the base, usually 4-angled, angles smooth, winged or not; sometimes with highly congested internodes. Leaves well developed or extremely reduced and scale-like (in saprophytic and parasitic taxa), opposite, sessile, shortly petiolate or amplexicaul. Inflorescences terminal, flowers solitary or cymose, sometimes dichotomously or dichasially branched. Flowers pedicellate, 4–5-merous, sometimes heterostylous, regular. Calyx lobes free to the base or sometimes forming a short tube, linear-lanceolate to ovate or obovate, dorsally winged; wings scabrid-denticulate, acute. Corolla contorted in bud; tube funnel-shaped or cylindric; lobes ovate, obovate or elliptic. Filaments inserted on the corolla tube or in the sinuses of the corolla lobes; anthers often oblong, exserted or included, with or without 1 stipitate apical and two minute basal glands. Ovary ovoid or obovoid or ± globose, bilocular; style exserted or included, often with swelling (secondary stigma) at the base or middle of its length, or long or short in the same taxon; stigma capitate or clavate, bilobed or entire. Capsule ovoid or obovoid, membranous or coriaceous, bivalved, dehiscence septicidal. Seeds minute, numerous, surface pitted, ± slightly reticulate or with ridge-like outgrowths.
Range
A genus of ± 60 species, widespread throughout tropical Africa and Madagascar with two species in Australia and New Zealand and one in Asia. The genus has a high concentration of species in southern Africa.
Notes
Schinz (Bull. Herb. Boiss., Sér. 2, 6: 714–744 (1906)) suggested an infrageneric classification of the genus Sebaea. He subdivided one of his sections, (Eusebaea) into 2 subsections: subsect. Tetrandria Schinz and Pentandra Schinz. Although his approach is elegant, it is unfortunate that he did not include all Sebaea species in his treatment. Some were placed under Exochaenium. In this study, an infrageneric classification is not considered as further detailed study is required.The floral morphology of Sebaea is very remarkable. The presence of a secondary swelling or a secondary stigma on the style characterizes one infrageneric group, and the presence of an extended stigmatic region (sometimes 3 times longer than the style) is the diagnostic feature of another. It has been reported that the secondary swelling is involved in pollination, ensuring self-pollination if cross-pollination fails.Characters of the apical and basal anther glands are of limited taxonomic use in Sebaea. The apical anther glands are either provided with small scale-like projections on their surface and are ± elongated, or are smooth and globose in shape.
Date Updated: 19 August 2007
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, (2002) Author: SILESHI NEMOMISSA
Names
SEBAEA R. Br. [family GENTIANACEAE], Prodr. Fl. Nov. Holl.: 451 (1810); Griseb., Gen. Sp. Gent.: 164 (1839); D.C., Prodr. 9: 52 (1845) (including Belmontia and Exochaenium); G.P. 2: 804 (1876) (including Belmontia); Gilg in E. & P.Pf. 4 (2): 64 (1895) (including Belmontia and Lagenia); Schinz in Mitt. Geogr. Ges. Lübeck 17: 125 (1903) & in Bull. Herb. Boiss., sér.2, 6: 714 (1906); A.W. Hill in K.B. 1908: 317 (1908); Marais in Bothalia 7: 464 (1961)
Information
Annual or perennial herbs, rarely parasitic or saprophytic. Stem erect or procumbent, simple or branched from the base, usually 4-angled, angles smooth, winged or not; sometimes with highly congested internodes. Leaves well developed or extremely reduced and scale-like (in saprophytic and parasitic taxa), opposite, sessile, shortly petiolate or amplexicaul. Inflorescences terminal, flowers solitary or cymose, sometimes dichotomously or dichasially branched. Flowers pedicellate, 4–5-merous, sometimes heterostylous, regular. Calyx lobes free to the base or sometimes forming a short tube, linear-lanceolate to ovate or obovate, dorsally winged; wings scabrid-denticulate, acute. Corolla contorted in bud; tube funnel-shaped or cylindric; lobes ovate, obovate or elliptic. Filaments inserted on the corolla tube or in the sinuses of the corolla lobes; anthers often oblong, exserted or included, with or without 1 stipitate apical and two minute basal glands. Ovary ovoid or obovoid or ± globose, bilocular; style exserted or included, often with swelling (secondary stigma) at the base or middle of its length, or long or short in the same taxon; stigma capitate or clavate, bilobed or entire. Capsule ovoid or obovoid, membranous or coriaceous, bivalved, dehiscence septicidal. Seeds minute, numerous, surface pitted, ± slightly reticulate or with ridge-like outgrowths.
Range
A genus of ± 60 species, widespread throughout tropical Africa and Madagascar with two species in Australia and New Zealand and one in Asia. The genus has a high concentration of species in southern Africa.
Notes
Schinz (Bull. Herb. Boiss., Sér. 2, 6: 714–744 (1906)) suggested an infrageneric classification of the genus Sebaea. He subdivided one of his sections, (Eusebaea) into 2 subsections: subsect. Tetrandria Schinz and Pentandra Schinz. Although his approach is elegant, it is unfortunate that he did not include all Sebaea species in his treatment. Some were placed under Exochaenium. In this study, an infrageneric classification is not considered as further detailed study is required.The floral morphology of Sebaea is very remarkable. The presence of a secondary swelling or a secondary stigma on the style characterizes one infrageneric group, and the presence of an extended stigmatic region (sometimes 3 times longer than the style) is the diagnostic feature of another. It has been reported that the secondary swelling is involved in pollination, ensuring self-pollination if cross-pollination fails.Characters of the apical and basal anther glands are of limited taxonomic use in Sebaea. The apical anther glands are either provided with small scale-like projections on their surface and are ± elongated, or are smooth and globose in shape.
Date Updated: 19 August 2007
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, (2002) Author: SILESHI NEMOMISSA
Names
SEBAEA R. Br. [family GENTIANACEAE], Prodr. Fl. Nov. Holl.: 451 (1810); Griseb., Gen. Sp. Gent.: 164 (1839); D.C., Prodr. 9: 52 (1845) (including Belmontia and Exochaenium); G.P. 2: 804 (1876) (including Belmontia); Gilg in E. & P.Pf. 4 (2): 64 (1895) (including Belmontia and Lagenia); Schinz in Mitt. Geogr. Ges. Lübeck 17: 125 (1903) & in Bull. Herb. Boiss., sér.2, 6: 714 (1906); A.W. Hill in K.B. 1908: 317 (1908); Marais in Bothalia 7: 464 (1961)
Information
Annual or perennial herbs, rarely parasitic or saprophytic. Stem erect or procumbent, simple or branched from the base, usually 4-angled, angles smooth, winged or not; sometimes with highly congested internodes. Leaves well developed or extremely reduced and scale-like (in saprophytic and parasitic taxa), opposite, sessile, shortly petiolate or amplexicaul. Inflorescences terminal, flowers solitary or cymose, sometimes dichotomously or dichasially branched. Flowers pedicellate, 4–5-merous, sometimes heterostylous, regular. Calyx lobes free to the base or sometimes forming a short tube, linear-lanceolate to ovate or obovate, dorsally winged; wings scabrid-denticulate, acute. Corolla contorted in bud; tube funnel-shaped or cylindric; lobes ovate, obovate or elliptic. Filaments inserted on the corolla tube or in the sinuses of the corolla lobes; anthers often oblong, exserted or included, with or without 1 stipitate apical and two minute basal glands. Ovary ovoid or obovoid or ± globose, bilocular; style exserted or included, often with swelling (secondary stigma) at the base or middle of its length, or long or short in the same taxon; stigma capitate or clavate, bilobed or entire. Capsule ovoid or obovoid, membranous or coriaceous, bivalved, dehiscence septicidal. Seeds minute, numerous, surface pitted, ± slightly reticulate or with ridge-like outgrowths.
Range
A genus of ± 60 species, widespread throughout tropical Africa and Madagascar with two species in Australia and New Zealand and one in Asia. The genus has a high concentration of species in southern Africa.
Notes
Schinz (Bull. Herb. Boiss., Sér. 2, 6: 714–744 (1906)) suggested an infrageneric classification of the genus Sebaea. He subdivided one of his sections, (Eusebaea) into 2 subsections: subsect. Tetrandria Schinz and Pentandra Schinz. Although his approach is elegant, it is unfortunate that he did not include all Sebaea species in his treatment. Some were placed under Exochaenium. In this study, an infrageneric classification is not considered as further detailed study is required.The floral morphology of Sebaea is very remarkable. The presence of a secondary swelling or a secondary stigma on the style characterizes one infrageneric group, and the presence of an extended stigmatic region (sometimes 3 times longer than the style) is the diagnostic feature of another. It has been reported that the secondary swelling is involved in pollination, ensuring self-pollination if cross-pollination fails.Characters of the apical and basal anther glands are of limited taxonomic use in Sebaea. The apical anther glands are either provided with small scale-like projections on their surface and are ± elongated, or are smooth and globose in shape.
![SEBAEA R. Br. [family GENTIANACEAE]](/fsi/img/misc/plants/static_thumbs/flora_tropEA_icon96.jpg)
╳
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.