Gesneriaceae
Streptocarpus

Streptocarpus heckmannianus (Engl.) I.Darbysh.

First published in Fl. Trop. E. Africa, Gesneriac.: 33 (2006)
This species is accepted
The native range of this species is Tanzania (Uluguru Mountains). It is a subshrub and grows primarily in the wet tropical biome.

Descriptions

Gesneriaceae, Ian Darbyshire. Flora of Tropical East Africa. 2006

Type
Type: Tanzania, Morogoro District, Uluguru Mts, Lukwangule Plateau, Goetze 251 (B†, holo., K! photo.; K!, iso.)
Morphology General Habit
Caulescent herb
Morphology Stem
Stems thin, creeping, producing fine adventitious roots, pubescent with long and/or short hairs
Morphology Leaves
Leaves alternate; blade broadly ovate to suborbicular, 1–5.5 cm long, 1–4 cm wide, base cordate, truncate or obtuse, margin crenate, apex rounded or obtuse, surfaces pubescent, hairs on upper surface variable, long or short, most dense towards the margins, hairs on the lower surface most dense on the principalnerves; lateral nerves 4–12 pairs, ascending; petiole 0.7–3.5 cm long, pubescent
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, solitary, 2–8-flowered; peduncles 5–8.5 cm long, pilose with mainly or entirely eglandular hairs; pedicels 5–9(–13) mm long, pilose with mixed glandular and eglandular hairs, ± dense; bracts elliptic to oblanceolate, 1–4 mm long, pubescent
Morphology Reproductive morphology Flowers Calyx
Calyx lobes (oblong-)lanceolate, 2–3.5(–4) mm long, eglandular-pubescent, sometimes with glandular hairs at the base
Morphology Reproductive morphology Flowers Corolla
Corolla white, rarely tinged pink, somewhat drooping, obliquely subcampanulate, 10–12 mm long, sparsely pubescent outside, glabrous within; tube 4.5–7 mm long, floor downcurved to the open, papillose mouth; limb with two suberect upper lobes, 2.5–3.2 mm long, 2.5 mm wide, lateral lobes 4–5 mm long, 3.5–4.5 mm wide, median lobe 4.5–5 mm long, 3.5–5 mm wide, all rounded and with unicellular marginal hairs
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens arising from the base of the corolla tube.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 2–2.5 mm long, glabrous.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther thecae rounded, ± 1 mm wide.
Morphology Reproductive morphology Flowers Androecium Staminodes
Staminodes minute
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary ovoid, 2–2.2 mm long, glabrous to densely pubescent, hairs eglandular or glandular.
Morphology Reproductive morphology Flowers Gynoecium Style
Style 4–5 mm long, largely glabrous away from base.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma rounded, 0.3–0.5 mm wide
Morphology Reproductive morphology Fruits
Capsule cylindric, 5–8 mm long, ± 1.5 mm diameter, not twisted, pubescent to glabrescent
Morphology Reproductive morphology Seeds
Seeds 0.35 mm long, verruculose.
[FTEA]

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: threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/158070/759591

Conservation
EN - endangered
[IUCN]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • 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/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. 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 2025. 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