Panicum isachnoides

HABIT Perennial; mat forming, or caespitose; clumped densely. Culms decumbent; 5–20 cm long. Lateral branches ample. Leaves distichous. Leaf-sheaths pubescent. Ligule a ciliate membrane; 0.5 mm long. Leaf-blades spreading; lanceolate; 1–3 cm long; 5–7 mm wide. Leaf-blade margins tuberculate-ciliate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; linear; 1–2 cm long; bearing few spikelets. Primary panicle branches appressed; simple.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2 mm long; falling entire.

GLUMES Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.25–0.33 length of spikelet; membranous; without keels; 3–5 -veined. Lower glume apex obtuse. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 7–9 -veined. Upper glume apex acute.

FLORETS Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7–9 -veined; acute. Palea of lower sterile floret 0.33 length of lemma. Fertile lemma elliptic; dorsally compressed; 2 mm long; indurate; without keel. Lemma margins involute. Lemma apex acute. Palea involute; indurate.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Pacific: north-central.

NOTES Paniceae. Hitchcock 1993.

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