Primulaceae
Ardisiandra

Ardisiandra wettsteinii J.Wagner

First published in Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 69: 185 (1932)
This species is accepted
The native range of this species is Ethiopia to S. Tropical Africa. It is a subshrub and grows primarily in the montane tropical biome.

Descriptions

Primulaceae, P. Taylor. Flora of Tropical East Africa. 1958

Morphology General Habit
Stems slender, reddish, prostrate, up to 45 cm. long, rooting at the nodes; internodes 5–30 mm. long.
Morphology Leaves
Leaves numerous; petiole slender, pubescent, up to 4 cm. long; lamina orbicular, up to 40 × 40 mm., sparsely pubescent on both surfaces, obtuse, basally cordate, 7–9-crenate, the crenations with a few short broad acute teeth.
Morphology Reproductive morphology Inflorescences
Racemes 1–6-flowered; axes up to 10 mm.; peduncles up to 10 mm.; pedicels filiform, up to 20 mm. long; bracts linear-lanceolate, 3–4 mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx-segments narrowly ovate, pubescent, basally rounded, acute, ciliate, slightly accrescent, at anthesis about half as long as the corolla.
Morphology Reproductive morphology Flowers Corolla
Corolla white or pale mauve, up to 8 mm. long; lobes 2–3 mm. long, glabrous; apex rounded or emarginate.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments about 0.6 mm. long; anthers about 1.3 mm. long.
Morphology Reproductive morphology Fruits
Capsule globose, about 4–5 mm. in diameter, indehiscent, with a thin transparent pericarp through which can be seen the swollen whitish placenta and black seeds.
Morphology Reproductive morphology Seeds
Seeds about 1.2 mm. long.
Figures
Fig. 1/1–11, p. 3.
Habitat
Upland rain-forest, upland dry evergreen forest, moist bamboo thickets and upland grasslands in shady damp places; 1800–3600 m.
Distribution
mountains of eastern Africa from Uganda and the adjacent parts of the Belgian Congo to Southern Rhodesia (Inyanga). K3 K4 K7 T2 T3 T7 T8 U2
[FTEA]

Primulaceae, F. K. Kupicha. Flora Zambesiaca 7:1. 1983

Morphology General Habit
Creeping perennial herb.
Morphology General Indumentum
All vegetative parts pilose; hairs long, weak, multicellular and uniSériate, the cross–walls between the cells conspicuously reddish.
Morphology Stem
Stems up to 1 m. long or more, reddish, partly prostrate and rooting at and between nodes, partly ascending to erect and very leafy.
Morphology Leaves Petiole
Petioles 1–3(4) cm. long, slender.
Morphology Leaves Leaf lamina
Leaf–lamina 1–3(4) cm. in diameter, broadly ovate or orbicular, cordate at base, crenately 5–9–lobed, the lobes coarsely toothed.
Morphology Reproductive morphology Inflorescences
Racemes 1–4(6)–flowered, flowers drooping; peduncles up to 8 mm. long, pedicels 15–20 mm. long, each with a subtending lanceolate bract c. 3 mm. long at or near the base.
Morphology Reproductive morphology Flowers Calyx
Calyx–segments c. 1/2 as long as the corolla, ovate, tapering at apex, the margins overlapping at the base, pilose, ciliate.
Morphology Reproductive morphology Flowers Corolla
Corolla 6–8 mm. long, campanulate, white to pale pink or lilac, glabrous or sparsely pilose, divided to the middle into oblong–cuspidate lobes.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens c. 3 mm. long; anthers c. 1·5 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary hemispherical, densely and stiffly pilose.
Morphology Reproductive morphology Fruits
Capsule c. 4 mm. in diameter, indehiscent, transparent–walled.
Morphology Reproductive morphology Seeds
Seeds 0·8–1 mm. long, numerous, ± tetrahedral, blackish, granular.
[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 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

  • World Checklist of Vascular plants (WCVP)

    • 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