|
Note - this takes you off
of our website |
GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Dilophotriche occidentalis
HABIT Perennial; caespitose. Culms 60–90 cm long. Ligule a fringe of hairs. Leaf-blades 3–6 cm long; 2–4 mm wide. Leaf-blade margins cartilaginous.
INFLORESCENCE Inflorescence a panicle.
Panicle open; elliptic; 6–10 cm long. Panicle branches capillary.
Spikelets in pairs, or in threes. Fertile spikelets pedicelled; 2–3 in the cluster; subequal. Pedicels free; filiform; unequal; 5–25 mm long.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 6–10 mm long; falling entire; deciduous with the pedicel; readily shedding fertile florets; pedicel base hooked. Floret callus elongated; 1 mm long; pubescent; truncate.
GLUMES Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 4–6 mm long; 0.5–0.66 length of spikelet; chartaceous; dark brown; without keels; 3 -veined. Lower glume surface hispid; hairy on veins; with tubercle-based hairs. Lower glume apex acute. Upper glume lanceolate; 6–10 mm long; 1 length of spikelet; chartaceous; dark brown; without keels; 3 -veined. Upper glume surface hispid; hairy on veins; with tubercle-based hairs. Upper glume apex acuminate.
FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; lanceolate; 6–10 mm long; 1 length of spikelet; chartaceous; 3 -veined; acuminate. Fertile lemma oblong; 4.5 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent; with a transverse row of hair tufts; bearing 2 hair tufts in all. Lemma margins involute; interlocking with palea keels. Lemma apex lobed; 2 -fid; incised 0.25 of lemma length; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; flat below; 15–18 mm long overall; with twisted column; deciduous; abscissing from top of lemma. Lateral lemma awns arising on apex of lobes; 5–6 mm long; shorter than principal. Palea 2 -veined. Palea keels contiguous above a sulcus; thickened.
FLOWER Anthers 3; 2 mm long.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Africa: west tropical.
NOTES Arundinelleae. WDC.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
