Gomphocarpus glaucophyllus Schltr.

First published in Beibl. Bot. Jahrb. Syst. 45: 18 (1894)
This species is accepted
The native range of this species is Uganda to Eswatini. It is a perennial or rhizomatous geophyte and grows primarily in the seasonally dry tropical biome.

Descriptions

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

Morphology General Habit
Perennial herb arising from stout woody rhizomatous rootstock.
Morphology Stem
Stems ascending or erect, 1–4, robust and somewhat fleshy, unbranched, 0.3–1 m long, glabrous and commonly glaucous
Morphology Leaves
Leaves opposite, sessile or subsessile, ovate to lanceolate, (4–)7–12 × (1.3–)3–6 cm, acute, cordate at the base, margins smooth, glabrous, generally glaucous with a waxy bloom on both surfaces; veins prominent, sometimes reddish
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary with (6–)9–15 flowers in a nodding umbel.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles 1.5–6 cm long, mostly 1/2– 2/3 length of subtending leaf, glabrous and generally glaucous.
Morphology Reproductive morphology Inflorescences Bracts
Bracts filiform to linear, 5–10 × 0.5–1 mm, margins ciliate or not.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 2–3.5 cm long, glabrous, glaucous or not
Morphology Reproductive morphology Flowers Calyx
Calyx lobes oblong to broadly ovate, 7–10 × 2–4 mm, apex obtuse to acute, glabrous, green or glaucous
Morphology Reproductive morphology Flowers Corolla
Corolla united at the base for 1–2 mm, greenish yellow, sometimes purplish on outer face, minutely papillate particularly towards base; lobes strongly or weakly reflexed, ovate, 9–12 × 5–8 mm, acute
Morphology Reproductive morphology Flowers Corona
Corona lobes attached ± 1.5 mm above base of staminal column, similar to G swynnertonii but measuring 4–6 × 3–6 mm, upper margin ± level with head of staminal column
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings triangular, 2–2.5 × 0.5–1 mm, outer margin straight or weakly concave; anther appendages broadly ovate, ± 1 × 1 mm, obtuse, inflexed over apex of stylar head; corpusculum black, ovoidsubcylindrical, ± 0.4 × 0.15 mm, with translucent flanges running up sides from attachment of translator arms; translator arms ± 0.5 × 0.15 mm, flattened and ± uniform in width but differentially thickened – inner margin thicker near corpusculum, outer margin thicker near pollinium.
Morphology Reproductive morphology Flowers Pollinia
Pollinia oblanceolate, ± 1.2 × 0.4 mm
Morphology Reproductive morphology Fruits
Follicles fusiform, 5.5–10 × 1.5–3.5 cm, with occasional longitudinal wings and an acute apex or oblong-elliptic in outline and somewhat inflated with an obtuse apex, glabrous, glaucous, usually only one of the pair developing; fruiting peduncle contorted to hold follicle erect
Morphology Reproductive morphology Seeds
Seeds suborbicular, ± 6 × 5 mm, with a slightly convoluted, pale and minutely pubescent margin surrounding a verrucose pubescent disc; coma ivory, ± 4 cm long
Figures
Fig 103/9 & 104/8, pp 424 & 425.
Ecology
Grassland or open Brachystegia or mixed decidous woodland; 700–2400 m. Flowering mostly October to December
Distribution
Range: Rwanda, Burundi, Zambia, Malawi, Zimbabwe, Swaziland and South Africa Flora districts: U2 T2 T5 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
South Africa, Mpumalanga, near Barberton, Galpin 663 (B† holotype, K, NH, PRE, SRGH).
Morphology General Habit
Perennial herb arising from stout woody rhizomatous rootstock; stems 1–4, robust and somewhat fleshy, unbranched, ascending or erect, 0.3–1 m long, glabrous and commonly glaucous
Morphology Leaves
Leaves sessile or subsessile, (4)7–12 × (1.3)3–6 cm, ovate to lanceolate, acute, cordate at the base, margins smooth, glabrous, generally glaucous with a waxy bloom on both surfaces, veins prominent, sometimes reddish
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary with (6)9–15 flowers in a nodding umbel; peduncles 1.5–6 cm long, mostly 1/2 to 2/3 length of subtending leaf, glabrous and generally glaucous; bracts 5–10 × 0.5–1 mm, filiform to linear, margins ciliate or not; pedicels 2–3.5 cm long, glabrous, glaucous or not
Morphology Reproductive morphology Flowers Calyx
Calyx lobes 7–10 × 2–4 mm, oblong to broadly ovate, apex obtuse to acute, glabrous, green or glaucous
Morphology Reproductive morphology Flowers Corolla
Corolla united at the base for 1–2 mm, greenish yellow, sometimes purplish on outer face, minutely papillate particularly towards base; lobes strongly or weakly reflexed, 9–12 × 5–8 mm, ovate, acute
Morphology Reproductive morphology Flowers Corona
Corona lobes attached c.1.5 mm above base of staminal column, similar to G. swynnertonii but measuring 4–6 × 3–6 mm, upper margin ± level with head of staminal column
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings 2–2.5 × 0.5–1 mm, triangular, outer margin straight or weakly concave; anther appendages c.1 × 1 mm, broadly ovate, obtuse, inflexed over apex of stigma head
Morphology Reproductive morphology Seeds
Follicles 5.5–10 × 1.5–3.5 cm, fusiform with occasional longitudinal wings and an acute apex or oblong-elliptic in outline and somewhat inflated with an obtuse apex, glabrous, glaucous, usually only one of the pair developing; fruiting peduncle contorted to hold follicle erect Seeds c.6 × 5 mm, ± suborbicular with a slightly convoluted, pale and minutely pubescent margin surrounding a verrucose pubescent disc; coma c.4 cm long, ivory.
Distribution
Zambia, Zimbabwe, Malawi. Uplands of eastern Africa from Eswatini and adjacent parts of South Africa, through Zimbabwe, Zambia, Malawi and Tanzania, to Rwanda, Burundi and Uganda in the north.
Phenology
Flowering mostly October to December.
Ecology
Grassland or open Brachystegia or mixed decidous woodland; 700–2400 m.
Conservation
reported by Goyder & Nicholas in Kew Bull. 56: 815 (2001) as Least Concern.
[FZ]

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]

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

    • 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