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.

Pseudoraphis minuta

HABIT Perennial; mat forming. Stolons present. Culms prostrate; 30–35 cm long; 3–6 -noded; rooting from lower nodes. Culm-nodes pubescent. Ligule an eciliate membrane. Leaf-blades floating; 2.5–4 cm long; 3–4 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes numerous; borne along a central axis; closely spaced; spreading; 2–3 cm long; bearing 5–10 fertile spikelets on each. Central inflorescence axis 4.5–5 cm long. Rhachis angular; scabrous on margins; terminating in a barren extension; extension bristle-like; extension 3–5 mm long. Spikelet packing abaxial.

Spikelets appressed; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3.5–4 mm long; falling entire.

GLUMES Glumes dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume oblate; 0.1 length of spikelet; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 7–9 -veined. Upper glume surface glabrous, or pubescent; hairy on veins. Upper glume apex cuspidate.

FLORETS Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret elliptic; 2–2.5 mm long; 0.5–0.66 length of spikelet; membranous; 7–9 -veined; acute. Fertile lemma oblong; 1.2 mm long; chartaceous; without keel. Lemma margins flat. Lemma apex acute. Palea 1 length of lemma; chartaceous; without keels.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp; ellipsoid; sulcate on hilar side.

DISTRIBUTION Asia-tropical: India and Indo-China. Australasia: Australia.

NOTES Paniceae. Fl Assam 1993.

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