Scribneria bolanderi

HABIT Annual. Culms erect, or geniculately ascending; 7–30 cm long. Ligule an eciliate membrane; 3 mm long. Leaf-blades filiform; 1–5 cm long; 0.5 mm wide.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; smoothly terete; bilateral; 5–15 cm long. Rhachis semiterete. Spikelet packing broadside to rhachis. Rhachis internodes linear; 4–6 mm long.

Spikelets sunken; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 5–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes collateral; persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume linear; 1 length of upper glume; chartaceous; 1-keeled; 3 -veined. Lower glume lateral veins ribbed. Lower glume apex acute. Upper glume linear; 5–7 mm long; 1.2 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume lateral veins ribbed. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 4–6 mm long; membranous; keeled; 3 -veined. Lemma apex dentate; 2 -fid; awned. Principal lemma awn 2–4 mm long overall.

FLOWER Anthers 1. Ovary glabrous.

DISTRIBUTION North America: northwest USA and southwest USA.

NOTES Hainardieae. WDC.

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