Panicum perangustatum

HABIT Annual. Culms erect, or geniculately ascending; slender; 20–30 cm long; firm. Ligule a ciliate membrane. Leaf-blades appressed, or ascending; flat, or conduplicate; 3–8 cm long; 1–3 mm wide. Leaf-blade apex acute, or acuminate.

INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.

Panicle open; linear; 2–5 cm long. Primary panicle branches appressed.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3.5–4.5 mm long; falling entire.

GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; 0.25 length of spikelet; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 9–11 -veined. Upper glume apex acuminate.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 9–11 -veined; acuminate. Fertile lemma oblong; dorsally compressed; 2.5 mm long; indurate; pallid; without keel. Lemma margins involute. Lemma apex rostrate. Palea involute; indurate.

DISTRIBUTION Africa: southern tropical.

NOTES Paniceae. FZ.

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