Tall Beardgrass (Bothriochloa alta)
Description
Racemes numerous; borne along a central axis; ascending; 2-4 cm long. Central inflorescence axis 5-14 cm long. Rhachis fragile at the nodes; flattened; villous on margins. Rhachis hairs 4-6 mm long. Rhachis internodes linear. Rhachis internode tip transverse. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; flattened; with a translucent median line (also present in internodes); villous; with 4-6 mm long hairs. Companion sterile spikelets well-developed; lanceolate; 3-3.6 mm long. Companion sterile spikelet glumes 5 -veined. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 4.5-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; attached transversely.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Liliopsida
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Order: Poales
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Family: Poaceae
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Genus: Bothriochloa
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