Iridaceae
Aristea

Aristea torulosa Klatt

First published in Abh. Naturf. Ges. Halle 15: 382 (1882)
This species is accepted
The native range of this species is S. Tanzania to S. Africa. It is a rhizomatous geophyte and grows primarily in the subtropical 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]

Iridaceae, Peter Goldblatt. Flora of Tropical East Africa. 1996

Morphology General Habit
Plants 20-70 cm. high.
Morphology Leaves
Leaves 6-10, mostly basal, linear to narrowly lanceolate or falcate, 3-7 mm. wide, ± half as long as the stem, firm-textured, cauline leaves smaller, sometimes entirely sheathing.
Morphology Stem
Stem lightly compressed, simple or with 1-2(-4) short branches at the lower fertile nodes.
Morphology Reproductive morphology Inflorescences
Flower-clusters 3-8, usually in lax spicate arrangement, sessile except the terminal, (2-)4-flowered, the lower flower- clusters sometimes subtended by a prominent leafy bract 1.4-2 cm. long; spathes 1-1.2 cm. long, membranous with solid keels, the margins scarious and lacerate; floral bracts entirely scarious, the margins irregularly lacerate.
Morphology Reproductive morphology Flowers
Flowers deep blue, ± sessile.
Morphology Reproductive morphology Flowers Tepal
Tepals apparently obovate, 10-14 × 5-7 mm.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments 4.5-6 mm. long; anthers 2 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Style
Style 6-7.5 mm. long, 3-lobed.
Morphology Reproductive morphology Fruits
Capsule ellipsoid-ovoid, 6-10 mm. long, on pedicels up to 2 mm. long.
Figures
Fig. 1/2.
Habitat
Montane grassland or wet habitats, either in at the edge of marshes or along streams; 2000-2700 m.; flowering December to February
Distribution
T6 T7
[FTEA]

Iridaceae, P. Goldblatt. Flora Zambesiaca 12:4. 1993

Morphology General Habit
Plants 20–70 cm high.
Morphology Leaves
Leaves 6–10, mostly basal and about half as long as the stem, 3–5 mm wide, linear to falcate, fairly rigid; cauline leaves smaller, sometimes entirely sheathing.
Morphology Stem
Stem lightly compressed, simple or with 1–2 short branches.
Morphology Reproductive morphology Flowers
Flowers deep-blue, more or less sessile. Flower clusters 3–8, usually in a lax spicate arrangement, sessile except for the terminal cluster, (2)4-flowered, the lower flower clusters sometimes subtended by a prominent leafy bract 14–20 mm long; spathes 10–12 mm long, membranous with solid keels, the margins scarious and lacerate; bracts entirely scarious, the margins irregularly lacerate.
Morphology Reproductive morphology Flowers Tepal
Tepals 10–14 × 5–7 mm, apparently obovate.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments 4.5–6 mm long, anthers 2 mm long.
Morphology Reproductive morphology Flowers Gynoecium Style
Style c. 6–7.5 mm long, 3-lobed.
Morphology Reproductive morphology Fruits
Capsule 6–10 mm long, ellipsoid-ovoid, on pedicels up to 2 mm long.
[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

    • 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

  • Kew Science Photographs

    • Copyright applied to individual images