1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida mollissima Pilg.

        This species is accepted, and its native range is Kenya to S. Africa.

    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Caespitose perennial; culms 60–90 cm. high, the internodes pubescent to woolly tomentose.
    Leaves
    Leaf-blades linear to filiform, up to 30 cm. long and 3 mm. wide, with a flake of wool at the auricles; sheaths woolly to glabrescent.
    Inflorescences
    Panicle narrow, very dense and spike-like, up to 20 cm. long.
    Spikelets
    Glumes unequal, the lower 7–10 mm. long, the upper 12–20 mm., both irregularly 2-toothed and drawn out into an awn up to 5 mm. long; lemma narrowly lanceolate, 8–10 mm. long, glabrous, articulated at the apex; callus pungent, 2–2.5 mm. long; column of awns 12–27 mm. long, the limbs subequal and 2.8–5.5 cm. long.
    Habitat
    Red sandy soil in Commiphora, Acacia deciduous bushland; 300–400 m.
    Distribution
    South West Africa K1 K4
    [GB]
    Habit
    Perennial; caespitose. Butt sheaths pubescent, or woolly. Culms 60-90 cm long. Culm-internodes distally pubescent, or woolly. Leaf-sheath oral hairs woolly. Ligule a fringe of hairs. Leaf-blades filiform, or linear; 20-30 cm long; 1-3 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 10-20 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2-2.5 mm long; pilose; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2-2.5 mm long; pilose; pungent.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 7-10 mm long; 0.5-0.6 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex dentate; 2 -fid; awned; 1 -awned. Lower glume awn 1-5 mm long. Upper glume lanceolate; 12-20 mm long; 1.5-2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; awned; 1 -awned. Upper glume awn 1-5 mm long.
    Florets
    Fertile lemma lanceolate; subterete; 8-10 mm long; coriaceous; keeled; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 28-55 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 12-27 mm long. Lateral lemma awns 28-55 mm long; subequal to principal. Palea 0.1 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: east tropical, southern tropical, and south.
    Reference
    Aristideae. FTEA.
    [FZ]

    Gramineae, E. Launert. Flora Zambesiaca 10:1. 1971

    Habit
    Perennial, up to 90 cm. high, densely caespitose.
    Culms
    Culms erect, robust, simple or rarely branched in the upper part, densely lanate-tomentose or densely woolly, especially towards the base, 3-7-noded; nodes glabrous, smooth.
    Leaf sheaths
    Leaf-sheaths lanate-tomentose to glabrous, usually tight.
    Ligules
    Ligule a shortly pubescent or ciliate rim; auricles with a tuft of woolly hairs; collar glabrous or minutely pubescent.
    Leaf lamina
    Leaf-laminae up to 30 x 0.3 cm., involute, nearly filiform, scaberulous above, glabrous, smooth beneath.
    Inflorescences
    Panicle up to 20 cm. long, shortly exserted, narrow, very dense and almost spiciform; axis densely lanate; branches numerous, very short, appressed, scabrid.
    Spikelets
    Spikelets nearly sessile, pallid or purplish.
    Glume
    Glumes very unequal, narrowly lanceolate, usually 1-nerved, scabrid on the keel, finely scaberulous towards the apex, shortly awned; the inferior 8-10 mm. long; the superior 12.5-22 mm. long.
    Lemma
    Lemma 7-8.5 mm. long, minutely punctulate; callus 2-2.5 mm. long, very acute, elongate, short-barbate; column 16-27 mm. long, scabrous, twisted; awns 2.8-6 cm. long, subequal, scabrous, more or less spreading; articulation between the apex of the lemma and the base of the column.

    Distribution

    Native to:

    Botswana, Cape Provinces, Free State, Kenya, Mozambique, Namibia, Northern Provinces, Zimbabwe

    Aristida mollissima Pilg. appears in other Kew resources:

    First published in Bot. Jahrb. Syst. 40: 80 (1907)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. Royal Botanic Gardens, Kew.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.

    Literature

    Kew Backbone Distributions
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. Royal Botanic Gardens, Kew.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.
    Flora of Tropical East Africa
    • Pilg. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 40: 80 (1908).

    Sources

    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

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0