Panicum koolauense

HABIT Perennial; cushion forming. Culms geniculately ascending; 5–15 cm long. Leaf-sheaths outer margin hairy. Ligule a ciliolate membrane. Leaf-blades flat, or convolute; 0.7–0.8 cm long; 1–1.8 mm wide. Leaf-blade surface ribbed; scaberulous; rough adaxially.

INFLORESCENCE Inflorescence comprising only a few spikelets; comprising 2–3 fertile spikelets; shorter than basal leaves.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2–2.3 mm long; falling entire.

GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.5–0.75 length of spikelet; membranous; much thinner on margins; without keels; 3 -veined. Lower glume apex acute. Upper glume elliptic; 1 length of spikelet; membranous; with hyaline margins; without keels; 9 -veined. Upper glume surface asperulous; rough on veins. 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 -veined; scaberulous; rough on veins; acute. Palea of lower sterile floret 0.5 length of lemma. Fertile lemma oblong; dorsally compressed; 2 mm long; cartilaginous; pallid; without keel. Lemma margins involute. Lemma apex obtuse; pubescent. Palea involute; cartilaginous.

FLOWER Lodicules 2; cuneate. Anthers 3; 0.7 mm long.

DISTRIBUTION Pacific: north-central.

NOTES Paniceae. WDC.

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