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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Stipagrostis anomala

HABIT Perennial; short-lived; caespitose. Culms erect, or geniculately ascending; 10–60 cm long; 1–2 -noded. Culm-internodes distally glabrous. Culm-nodes glabrous. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades curled; filiform; 1–20 cm long; 1–2 mm wide. Leaf-blade surface ribbed; scabrous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle open; linear, or lanceolate; interrupted; 3–17 cm long. Panicle axis scabrous. Panicle branches bearing congested spikelets; scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 9–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5 mm long; pilose; pungent.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 7–10 mm long; 0.75–8 length of upper glume; chartaceous; without keels, or 1-keeled; 3 -veined. Lower glume surface asperulous. Lower glume apex truncate, or acute. Upper glume lanceolate; 9–12 mm long; 2.5–3 length of adjacent fertile lemma; chartaceous; without keels; 3 -veined. Upper glume apex truncate, or acute.

FLORETS Fertile lemma oblong; 4 mm long; coriaceous; without keel; 3 -veined. Lemma surface papillose. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 1 -awned. Principal lemma awn geniculate; with 7–15 mm long limb; with twisted column; deciduous; abscissing from top of lemma; limb glabrous. Column of lemma awn 4–7 mm long; ciliate; hairy on lower part. Palea oblong; 1 mm long; 0.25 length of lemma; 2 -veined; without keels.

FLOWER Lodicules 2; lanceolate; 1–1.5 mm long; membranous.

FRUIT Caryopsis with adherent pericarp; fusiform. Embryo 0.33 length of caryopsis.

DISTRIBUTION Africa: south.

NOTES Aristideae. De Winter 1993.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.