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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.
Anadelphia scyphofera
HABIT Annual. Culms erect; 10–40 cm long. Leaf-sheath auricles erect; 2–3 mm long. Ligule a ciliolate membrane. Leaf-blades filiform; 10–20 cm long; 0.5 mm wide.
INFLORESCENCE Synflorescence compound; fastigiate; 20–30 cm long. Inflorescence comprising only a few spikelets; comprising 2 fertile spikelets; terminal and axillary; subtended by a spatheole; enclosed. Spatheole linear; 2.5–3.5 cm long; scarious. Peduncle expanded into a conical flask at apex (2 mm long).
Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels filiform; 2 mm long; ciliate.
STERILE SPIKELETS Companion sterile spikelets well-developed; comprising 2 subequal glumes without lemmas; linear; 2–4 mm long; shorter than fertile; separately deciduous. Companion sterile spikelet callus linear; 0.25 mm long; truncate. Companion sterile spikelet glumes chartaceous; glabrous; acuminate.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6–7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 1.5 mm long; pilose; base pungent; attached obliquely.
GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; chartaceous; without keels; keel-less except near apex; 6 -veined. Lower glume lateral veins distinct. Lower glume surface with a longitudinal median groove. Lower glume apex dentate; 2 -fid. Upper glume oblong; without keels; 3 -veined. Upper glume apex acute; awned; 1 -awned. Upper glume awn 12–14 mm long.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; 2 -veined; ciliate on margins. Fertile lemma oblong; 3 mm long; hyaline; without keel. Lemma margins ciliate. Lemma apex lobed; 2 -fid; incised 0.2 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; bigeniculate; 45–50 mm long overall; with twisted column. Column of lemma awn 20–25 mm long; glabrous. Palea absent or minute.
DISTRIBUTION Africa: west-central tropical and southern tropical.
NOTES Andropogoneae. WDC.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
