Open Herbarium - Diplachne fusca subsp. fascicularis

Diplachne fusca subsp. fascicularis (Lam.) P.M.Peterson & N.Snow
Family: Poaceae [Leptochloa fusca subsp. fascicularis (Lam.) N. Snow] Images not available	Flora of North America Resources Neil Snow Culms 5-110 cm, prostrate (in small circular clumps) to erect. Blades glabrous or scabrous, uppermost blades often exceeding the panicles. Panicles(1.5)10-72 cm long, 4-22 cm wide, with 3-35 branches, usually partially enclosed in the uppermost leaf sheaths; branches 3-12(22) cm, often spreading. Spikelets 5-12 mm. Lower glumes 2-3 mm, lanceolate, sometimes asymmetric; upper glumes 2.5-5 mm, elliptic to ovate; lemmas lanceolate, smoky white at maturity, often with a dark spot on the basal 1/2, apices acute, mucronate, or awned, awns to 3.5 mm; anthers 1-3, 0.2-0.5 mm. Caryopses 0.8-2 mm. Leptochloa fusca subsp. fascicularis extends from southern British Columbia and Ontario to Argentina, although it has not yet been reported from Georgia. Coastal populations from Massachusetts to Florida with long lemma awns have been called L. fascicularis var. maritima (E.P. Bicknell) Gleason. They do not merit taxonomic recognition because long awns and salinity tolerance are common throughout the species. Diplachne fusca subsp. fascicularis differs from Dinebra viscida, which grows in the same region, in its longer panicles, frequently unawned or mucronate lemmas, and whitish florets.
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