GrassBase - The Online World Grass Flora


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

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

Anthaenantiopsis rojasiana

HABIT Perennial; caespitose. Culms erect; 100–110 cm long; 3 -noded. Culm-nodes glabrous. Leaf-sheaths pubescent. Ligule a fringe of hairs. Leaf-blades 25–35 cm long; 5–7 mm wide. Leaf-blade surface pubescent; hairy adaxially. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 6–30; borne along a central axis; closely spaced; in a multilateral false spike; unilateral; 1–3 cm long. Central inflorescence axis 10–15 cm long. Rhachis angular; glabrous on margins. Spikelet packing contiguous.

Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster. Pedicels unequal; 1–3 mm long; ciliate; hairy at tip.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; compressed slightly; obtuse; 3–3.5 mm long; falling entire.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets, or shorter than spikelet; thinner than fertile lemma. Upper glume oblong; membranous; without keels; 5–7 -veined. Upper glume lateral veins ribbed. Upper glume surface pilose, or villous; hairy above. Upper glume margins ciliate. Upper glume apex obtuse.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; oblong; 1 length of spikelet; membranous; 5 -veined; ribbed; pilose, or villous; hairy above; obtuse. Palea of lower sterile floret 1 length of lemma (with pubescent apex). Fertile lemma oblong; 3–3.5 mm long; coriaceous; without keel; 5 -veined. Lemma margins involute. Lemma apex acute; pubescent. Palea gaping; 1 length of lemma; coriaceous; 2 -veined.

FLOWER Anthers 3; 2 mm long.

DISTRIBUTION South America: southern South America.

NOTES Paniceae. WDC.

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