1. Family: Poaceae Barnhart
    1. Poecilostachys Hack.

      1. This genus is accepted, and its native range is Tropical Africa, Madagascar.

    [GB]

    nonem

    Habit
    Annual (3), or perennial (13). Rhizomes absent (15), or elongated (1). Culms erect (2), or geniculately ascending (3), or decumbent (5), or prostrate (5), or rambling (4); slender (2/2); 18-53.47-200 cm long; rooting from lower nodes (6/6). Culm-internodes terete (1/1). Lateral branches sparse (1/5), or ample (5/5). Leaf-sheath auricles absent (12), or erect (5). Ligule an eciliate membrane (5), or a ciliolate membrane (5), or a ciliate membrane (6). Leaf-blades aciculate (1), or linear (2), or lanceolate (14), or oblong (1). Leaf-blade venation without cross veins (14), or with obscure cross veins (2).
    Inflorescences
    Inflorescence composed of racemes. Racemes single (1), or borne along a central axis (15); erect (1), or ascending (14), or spreading (1); unilateral (15/15); bearing few fertile spikelets (1), or many spikelets (15). Rhachis angular (15/15). Spikelet packing crowded (2), or contiguous (11), or lax (3). Spikelets solitary (4), or in pairs (14). Fertile spikelets sessile (2), or sessile and pedicelled (6), or pedicelled (8); 1 in the cluster (3/14), or 2 in the cluster (14/14); subequal (11/11), or the lower smaller (10/11). Pedicels tip cupuliform (1/1).
    Spikelets
    Spikelets comprising 1 basal sterile florets (15/15); 1 fertile florets (15/15); without rhachilla extension (15/15). Spikelets linear (1), or lanceolate (9), or oblong (8); laterally compressed; 4.15-5.914-8 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets (15/15); 1 fertile florets (15/15); without rhachilla extension (15/15). Spikelets linear (1), or lanceolate (9), or oblong (8); laterally compressed; 4.15-5.914-8 mm long; falling entire.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma (15), or similar to fertile lemma in texture (1). Lower glume lanceolate (10), or ovate (7); 1-1.05-1.1 length of upper glume; membranous (13/15), or herbaceous (2/15); without keels (2/15), or 1-keeled (13/15); 3 -veined (5), or 4 -veined (2), or 5 -veined (12), or 6 -veined (3), or 7 -veined (4). Lower glume surface smooth (13), or asperulous (2), or scabrous (1); glabrous (12), or pubescent (1), or pilose (3), or setose (1). Lower glume apex truncate (2/13), or obtuse (1/13), or acute (7/13), or acuminate (3/13); muticous (4), or mucronate (4), or awned (12). Upper glume lanceolate (9), or oblong (2), or ovate (6); membranous (13/15), or herbaceous (2/15); without keels (3/15), or 1-keeled (12/15); 3 -veined (4), or 4 -veined (1), or 5 -veined (11), or 6 -veined (4), or 7 -veined (6). Upper glume surface smooth (15), or asperulous (1); glabrous (12), or puberulous (1), or pubescent (2), or pilose (1), or setose (1); with simple hairs (4/5), or tubercle-based hairs (1/5). Upper glume apex truncate (1/15), or obtuse (3/15), or acute (9/15), or acuminate (2/15); muticous (12), or mucronate (5), or awned (1); 1 -awned (1/1).
    Florets
    Basal sterile florets barren; with palea (2), or without significant palea (15). Lemma of lower sterile floret lanceolate (7/15), or elliptic (4/15), or ovate (5/15); membranous (13/14), or herbaceous (1/14); 5 -veined (8/14), or 6 -veined (3/14), or 7 -veined (9/14), or 8-9 -veined (1/14); obtuse (2/14), or acute (11/14), or attenuate (1/14); muticous (14/15), or mucronate (1/15). Fertile lemma lanceolate (6), or elliptic (1), or oblong (2), or ovate (7); laterally compressed; chartaceous (1), or cartilaginous (14), or coriaceous (1); without keel (15), or keeled (1); 3 -veined (3/7), or 5 -veined (4/7). Lemma margins flat (2), or involute (1), or convolute (13); exposing palea (3), or covering most of palea (13). Lemma apex obtuse (1/15), or acute (12/15), or acuminate (1/15), or attenuate (1/15). Palea not rolled (1), or involute (15); membranous (1), or cartilaginous (14), or coriaceous (1); 2 -veined (8/8); without keels (10), or 2-keeled (6).
    Flowers
    Anthers 3 (7/7).
    Distribution
    Africa.
    [FZ]

    Gramineae, W. D. Clayton. Flora Zambesiaca 10:3. 1989

    Inflorescences
    Inflorescence of lax racemes along a central axis, the spikelets in pairs or little clusters.
    Spikelets
    Spikelets laterally compressed.
    Glume
    Glumes 1/3–3/4 length of spikelet, the inferior often awned.
    Lemma
    Superior lemma strongly laterally compressed, membranous to cartilaginous with flat or involute margins.
    [FTEA]

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

    Habit
    Perennial with trailing culms, often with aerial roots from the nodes
    Leaves
    Leaf-blades lanceolate, minutely cross-veined; ligule short, scarious, with ciliate fringe
    Inflorescences
    Inflorescence composed of racemes borne along a central axis; rhachis narrow, bearing spikelets in pairs or on short secondary racemelets
    Spikelets
    Spikelets lanceolate, laterally compressed; glumes unequal, the lower 1/3–2/3, the upper ± 3/4 as long as the spikelet, herbaceous, acuminate; lower floret barren (rarely ♂), the lemma similar to the upper glume, acute, usually without a palea; upper lemma subcoriaceous, smooth, shining, its margins inrolled and broadly clasping the palea, sharply acute and keeled at the tip; palea acute
    Fruits
    Caryopsis plano-convex, laterally compressed.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Ethiopia, Gulf of Guinea Is., Kenya, Madagascar, Malawi, Mozambique, Nigeria, Rwanda, Sudan, Tanzania, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Puerto Rico

    Poecilostachys Hack. appears in other Kew resources:

    First published in Sitzungsber. Kaiserl. Akad. Wiss., Wien, Math.-Naturwiss. Cl., Abt. 1, 89: 131 (1884)

    Literature

    Flora Zambesiaca
    • in Sitz.-Ber. Math.-Nat. Akad. Wiss. Wien 89: 131 (1884).

    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 2018. 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 2018. 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