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.

Cryptochloa capillata

HABIT Perennial; caespitose. Roots bearing tubers. Culms 50–80 cm long. Culm-nodes glabrous, or pubescent. Leaves cauline; 4–6 per branch. Leaf-sheaths outer margin hairy. Ligule an eciliate membrane; 4–8 mm long; acute. Leaf-blade base broadly rounded; symmetrical; with a brief petiole-like connection to sheath; petiole 0.2–0.4 cm long; petiole pubescent. Leaf-blades elliptic; 10–13 cm long; 30–42 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Monoecious; with male and female spikelets in different inflorescences (or the terminal mixed). Inflorescence composed of racemes; comprising 2–4 fertile spikelets; axillary; embraced at base by subtending leaf.

Racemes 1; single; 3–5 cm long; bearing few fertile spikelets; bearing 2–4 fertile spikelets on each.

Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled. Pedicels clavate (female); pubescent.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 11–13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long.

GLUMES Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 11–13 mm long; 1 length of upper glume; membranous; without keels; 5–7 -veined. Lower glume surface pubescent; hairy below. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 2–4 mm long. Upper glume lanceolate; 1.4 length of adjacent fertile lemma; membranous; without keels; 5–7 -veined. Upper glume surface pubescent; hairy below. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 2–4 mm long.

FLORETS Fertile florets female. Fertile lemma lanceolate; 7.5–9 mm long; indurate; pallid and dark brown; mottled with last colour; shiny; without keel. Lemma margins involute. Lemma apex acute. Palea involute; 1 length of lemma; indurate.

FLOWER Lodicules 3; membranous. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; 6 mm long.

MALE Male inflorescence terminal; similar to female; a panicle (ovate,5–8cm). Male spikelets distinct from female; 1 flowered; linear; 5–9 mm long. Male spikelet glumes absent. Male spikelet lemma 3 -veined; awned; with 2–3 mm long awn.

DISTRIBUTION South America: northern South America and Brazil.

NOTES Olyreae. Fl Guian 1994.

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