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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Froesiochloa boutelouoides

HABIT Perennial; caespitose. Culms erect; 20–30 cm long. Leaves cauline. Leaf-sheaths pubescent. Ligule an eciliate membrane. Leaf-blade base broadly rounded; with a brief petiole-like connection to sheath. Leaf-blades ovate; 3–8 cm long; 10–20 mm wide. Leaf-blade venation with obscure cross veins. Leaf-blade apex acute.

INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes.

Racemes 2–4; borne along a central axis; lanceolate; unilateral; 1.2–1.8 cm long; bearing few fertile spikelets; bearing 1 fertile spikelets on each. Central inflorescence axis 2–3 cm long. Rhachis deciduous from axis; flattened.

Sexes segregated; on bisexual branches; with male below. Spikelets ascending; solitary. Fertile spikelets pedicelled. Male spikelets sessile; 6–10 in a cluster. Pedicels cuneate.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 15 mm long; falling entire; deciduous with accessory branch structures.

GLUMES Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 15 mm long; 1 length of upper glume; herbaceous; without keels; 5–9 -veined. Lower glume lateral veins with cross-veins. Lower glume apex acuminate. Upper glume ovate; 15 mm long; 2.5 length of adjacent fertile lemma; herbaceous; without keels; 5–9 -veined. Upper glume lateral veins with cross-veins. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1 mm long.

FLORETS Fertile florets female. Fertile lemma elliptic; 6 mm long; indurate; pallid; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex acute. Palea indurate; without keels.

FLOWER Anthers 3. Filaments united in a tube.

MALE Male spikelets distinct from female; 1 flowered; lanceolate; 7–8 mm long; hairy (ciliate). Male spikelet glumes absent. Male spikelet lemma 5 -veined; awned (1mm).

DISTRIBUTION South America: northern South America and Brazil.

NOTES Olyreae. WDC.

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