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.

Axonopus jeanyae

HABIT Perennial; caespitose. Culms erect; 50–75 cm long; 2–3 mm diam. Culm-internodes distally glabrous. Culm-nodes swollen; pubescent. Lateral branches sparse. Leaves mostly basal; without demarcation between sheath and blade. Leaf-sheaths outer margin hairy. Ligule a ciliolate membrane; 0.5 mm long. Leaf-blades flat, or conduplicate; 10–25 cm long; 2–3 mm wide. Leaf-blade margins tuberculate-ciliate; hairy at base. Leaf-blade apex obtuse.

INFLORESCENCE Inflorescence composed of racemes; terminal and axillary; with 2 peduncles per sheath.

Racemes 2–5; digitate; unilateral; 4–11 cm long. Central inflorescence axis 2–2.5 cm long. Rhachis angular; 0.3–0.4 mm wide; scabrous on margins; glabrous on margins. Spikelet packing adaxial.

Spikelets appressed; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.9–2.5 mm long; falling entire.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume ovate; 1 length of spikelet; membranous; without keels; 4–5 -veined. Upper glume primary vein absent, or distinct. Upper glume surface pubescent; hairy between veins.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; 4–5 -veined; without midvein, or with evident midvein; pubescent; hairy between veins. Fertile lemma oblong; 1.8–2.1 mm long; indurate; dark brown; without keel. Lemma margins involute. Lemma apex obtuse; pubescent. Palea involute; indurate.

FLOWER Anthers 3; 1–1.1 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Mesoamericana.

NOTES Paniceae. Fl Meso-Am 1993.

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