Stathmostelma pauciflorum (Klotzsch) K.Schum.

First published in Bot. Jahrb. Syst. 17: 132 (1893)
This species is accepted
The native range of this species is SE. Kenya to S. Tropical Africa. It is a perennial or tuberous geophyte 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]

Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Morphology General Habit
Perennial herb with a single annual stem arising from a narrowly cylindrical vertical tuber to 30 cm or more in length.
Morphology Stem
Stems erect, 0.2–1 m long, generally unbranched, pubescent with short white hairs
Morphology Leaves
Leaves with petiole 0–5(–10) mm long; lamina narrowly linear to linear-lanceolate, (3–)6–14 × 0.1–0.6(–1.3) cm, acute, cuneate or occasionally truncate, sparsely pubescent with stiff white hairs particularly on margins and midrib below
Morphology Reproductive morphology Inflorescences
Inflorescences terminal, sometimes also extra-axillary, with 3–7(–12) flowers in an erect umbel.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles erect, (5–)7–30 cm long, minutely spreading-pubescent.
Morphology Reproductive morphology Inflorescences Bracts
Bracts filiform, pubescent, caducous.
Morphology Reproductive morphology Flowers Calyx
Sepals purplish, ovate-oblong, 2–4 × 1 mm, acute, densely pubescent
Morphology Reproductive morphology Flowers Corolla
Corolla usually strongly reflexed, red or orange (yellow in parts of southern Congo-Kinshasa), glabrous on outer surface, minutely papillose within; lobes oblong-ovate, (6–)7–10 × 3–4 mm, acute, somewhat replicate
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium sessile
Morphology Reproductive morphology Flowers Corona
Corona lobes arising at the base of the staminal column, erect and somewhat fleshy, orange or yellow, 7–12(–14) × 2 mm, concavecucullate in the lower half with the inner margins produced into a pair of inwardpointing falcate teeth ± 2 mm long arching over the column, the upper half forming an erect or spreading, flattened tongue with a rounded to acute apex, no tooth present within cavity of lobe
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings ± 2 mm long with an additional basal tail curled under the anthers; anther appendages ± 1 mm long; corpusculum black, subglobose, 0.3 × 0.2 mm; translator arms with a membranous, oblanceolate, convex and somewhat contorted proximal part ± 1 × 0.2 mm, and a more slender distal part ± 0.5 mm long broadening abruptly into a short clasping overlap with the pollinium.
Morphology Reproductive morphology Flowers Pollinia
Pollinia ± 0.8 × 0.3 mm, flattened, oblong
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat
Morphology Reproductive morphology Flowers Pedicel
Fruiting pedicel not contorted. Pedicels 1.5–3 cm long, pubescent and frequently purplish
Morphology Reproductive morphology Fruits
Follicle erect, fusiform, ± 8 × 0.5 cm, not inflated, smooth, glabrous.
Ecology
Seasonally waterlogged grassland; sea level–1500 m
Distribution
Range: S Congo-Kinshasa, Zambia, Malawi, Mozambique and Zimbabwe Flora districts: K7 T2 T3 T6 T7 T8
[FTEA]

Goyder, D. J., Gilbert, M. G. & Venter, H. J. T. (2020). Apocynaceae (part 2). In: M. A. García (ed.), Flora Zambesiaca, Vol. 7(3). Royal Botanic Gardens, Kew.

Type
Mozambique, Rios de Sena, Peters s.n. (B† holotype, K).
Morphology General Habit
Perennial herb with a single annual stem arising from a narrowly cylindrical vertical tuber to 0.3 m or more in length; stems 0.2–1 m long, generally unbranched, erect, pubescent with short white hairs
Morphology Leaves
Leaves with petiole 0–5(10) mm long; lamina (3)6–14 × 0.1–0.6(1.3) cm, narrowly linear to linear lanceolate, acute, cuneate or occasionally truncate, sparsely pubescent with stiff white hairs particularly on margins and midrib below
Morphology Reproductive morphology Inflorescences
Inflorescences terminal, sometimes also extra-axillary, with 3–7(12) flowers in an erect umbel, peduncles (5)7–30 cm long, erect, minutely spreading-pubescent; bracts filiform, pubescent, caducous; pedicels 1.5–3 cm long, pubescent and frequently purplish
Morphology Reproductive morphology Flowers Calyx
Sepals 2–4 × 1 mm, ovate-oblong, acute, densely pubescent, purplish
Morphology Reproductive morphology Flowers Corolla
Corolla usually strongly reflexed, red or orange (yellow in parts of southern D.R Congo), glabrous on outer surface, minutely papillose within; lobes (6)7–10 × 3–4 mm, oblong-ovate, acute, somewhat replicate
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium sessile
Morphology Reproductive morphology Flowers Corona
Corona lobes arising at the base of the staminal column, orange or yellow, 7–12(14) × 2 mm, erect and somewhat fleshy, concave-cucullate in the lower half with the inner margins produced into a pair of inward-pointing falcate teeth c.2 mm long arching over the column, the upper half forming an erect or spreading, flattened tongue with a rounded to acute apex, no tooth present within cavity of lobe
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings c.2 mm long with an additional basal tail curled under the anthers; anther appendages c.1 mm long
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat
Morphology Reproductive morphology Fruits
Fruiting pedicel not contorted; follicle erect, c.8 × 0.5 cm, fusiform, not inflated, smooth, glabrous.
Distribution
Zambia, Zimbabwe, Malwai, Mmozambique. The most widely distributed species of the genus, recorded from coastal Kenya, Tanzania, Mozambique, Malawi, Zambia, southern D.R. Congo and Zimbabwe.
Ecology
Seasonally waterlogged grassland close to sea level near the coast and up to 1500 m inland.
[FZ]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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