Cordylostigma virgatum (Willd.) Groeninckx & Dessein

First published in Taxon 59: 1466 (2010)
This species is accepted
The native range of this species is Tropical & S. Africa, W. Indian Ocean. It is an annual or subshrub and grows primarily in the seasonally dry tropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

Morphology General Habit
Perennial (? rarely annual) erect herb, 9–60 cm. tall, with few to many rather slender strict or spreading branches from a woody base; stems glabrous, scabridulous or quite densely pubescent with short spreading hairs.
Morphology Leaves
Leaf-blades linear to narrowly elliptic, 1–4 cm. long, 0.5–5 mm. wide, acute and often, particularly in wider leaves, ending in a seta up to 1 mm. long, gradually narrowed at the base, glabrous to quite densely covered with spreading hairs at least above and on margins and midvein beneath; stipule-sheath 1–2 mm. long, divided into 2–6 filiform fimbriae (1–)2–6 mm. long.
Morphology Reproductive morphology Inflorescences
Inflorescences lax, with 2–several flowers at each node, some with short pedicels others long, those in the lower parts of the inflorescence actually axillary but the leaves reduced to stipules only which form hyaline bracts; peduncles 0.1–3(–6) cm. long, internodes of inflorescence 0.6–3.3 cm. long; pedicels 1–9(–18) mm. long, glabrous.
Morphology Reproductive morphology Flowers Calyx
Calyx-tube subglobose, ± 1 mm. long, 1.5 mm. wide, glabrous; lobes narrowly triangular, 1.2–2 mm. long, ending in a short seta, glabrous or somewhat scabridulous on the margins.
Morphology Reproductive morphology Flowers Corolla
Corolla white to purplish brown with lobes white, pale rose, red or lilac (sometimes only at the apex outside); tube 3.5–5.5 mm. long, the widened part 1–1.3 mm. long, 0.9–1.2 mm. wide, glabrous outside and throat not bearded within; lobes ovate-elliptic, 0.9–1.9 mm. long, 0.8–1.2 mm. wide, ± acute.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Style 2.5–3.5 mm. long; stigma-lobes 1.2–1.4 mm. long.
Morphology Reproductive morphology Fruits
Capsule transversely oblong or subglobose, 1–2 mm. long, 1.5–3 mm. wide, glabrous; fruiting pedicel up to 1.3 cm. long.
Morphology Reproductive morphology Seeds
Seeds dark brown, subconic to irregularly ovoid, ± 0.3 mm. long.
Habitat
Open grassy places in coastal bushland, deciduous woodland, secondary grassland, rocky places, waste ground, roadsides and in old cultivations and rice fields; 0–1080(–1620) m.
Distribution
widespread in tropical Africa from Guinée to South West Africa, Zaire and Sudan to South Africa K4 K7 T2 T3 T6 U3 Z
[FTEA]

Rubiaceae, B. Verdcourt. Flora Zambesiaca 5:1. 1989

Morphology General Habit
Annual or perennial, erect to suberect, ascending or straggling herbs, (6) 15–50(60) cm. tall; one to many branched slender stems from a ± woody base; stems slightly ribbed, glabrous, scabrid or ± densely hirsute, often becoming glabrous towards the apex.
Morphology Leaves
Leaves (14)19–29(32) x (0.5)1–5(7) mm., narrowly linear, linear-lanceolate to lanceolate-elliptic, rarely filiform, acute and shortly aristate, arista 0.5–1 m. long, glabrous or hirsute, mostly ± scabrid to hirsute on upper surface along margins and midrib beneath, upper leaves ± glabrous or hirsute at the base, margins revolute; stipular sheath (0.9)1.2–2(2.4) mm. long, hirsute, produced into (2, 3) 4–6 reflexed filiform fimbriae (1.4)1.8–4.5(6) mm. long.
Morphology Reproductive morphology Inflorescences
Inflorescences usually with 2 or, more rarely, 3 with additional accessory, flowers at a node, pedicellate or rarely subsessile; peduncles (3)24–34(79) mm. long; pedicels (1)3–7(15) mm. long, glabrous.
Morphology Reproductive morphology Flowers Calyx
Calyx tube (0.5)0.7–1.3(1.5) x (0.4)0.9–1.4(1.6) mm., obovate-subglobose glabrous; lobes narrowly triangular to narrowly ovate-triangular, ending in a short seta or mucro, margins with short stiff hairs, otherwise glabrous.
Morphology Reproductive morphology Flowers Corolla
Corolla lobes variously coloured, white, cream, yellowish, blueish, mauve, purple, pink or red, sometimes bicoloured on the same plant; buds usually darker in colour (red or pink), open flowers becoming paler with age?; back of lobes and tubes paler or brownish to pinkish green or greenish white, interior and exterior glabrous or very rarely in longer tubed forms throat inside very slightly papillose; tube altogether (2.7)3–6.5(7) mm. long, the dilated part (0.7)1–2.1(2.4) x (0.7)0.8–1.2(1.45) mm., the narrow part (0.4)0.5–0.9(1.1) mm. wide; lobes (0.9)1–2.2(2.4) x (0.6)0.8–1.2(1.3) mm., ovate-triangular to ovate-elliptic, subacute to slightly apiculate.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers narrowly ovate, 1–1.5 mm. long; pollen (3)4(6) colporate.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Style and stigma together as long as the narrow tube, stigma tip just touching anthers or ± isostylous.
Morphology Reproductive morphology Fruits
Capsules (1)1.2–2.1(2.5) mm. long and (1.8)2–2.9(3.3) mm. wide, hemispherical to subglobose, glabrous.
Morphology Reproductive morphology Seeds
Seeds brownish, c. 0.4 mm. long, round-subconic.
[FZ]

Rubiaceae, F. N. Hepper & R. W. J. Keay. Flora of West Tropical Africa 2. 1963

Morphology General Habit
Herb a few inches to 1 ft. high, usually with numerous erect branches
Morphology Reproductive morphology Flowers
Flowers pink, sometimes white, red or mauve.
[FWTA]

Sources

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    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
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    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0
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    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Flora of West Tropical Africa

    • Flora of West Tropical Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
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    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Plants and People Africa

    • Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
    • © Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/