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Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. fasciculatum (Torr.) Freckman

March 14, 2012 by njflora

Order: Poales

 Family: Poaceae 

Dicanthelium acuminatum (Sw.) Gould & C.A. Clark var fasciculatum (Torr.) Freckman 

Synonymy: Dichanthelium lanuginosum (Elliot) Gould var. fasciculatum (Torr.) Spellenb.; Dichanthelium subvillosum (Ashe) Mohlenbr.; Panicum acuminatum Sw. var. fasciculatum (Torr.) Lelong; Panicum lanuginosum Elliot var. fasciculatum (Torr.) Fernald; Panicum lindheimeri Nash var. fasciculatum (Torr.) Fernald; Panicm huachucae Ashe var. fasciculatum (Torr.) F.T. Hubbard; Panicum lanuginosum Elliot var. tennessennse (Ashe) Gleason; Panicum tennessennse Ashe 

Lower Taxa: none 

Origin: Native 

Habit: Perennial, rosette forming grass 

Habitat: Dry soils; Open fields to sparse woodlands 

Range: Found throughout NJ 

Frequency: Frequent, widely dispersed  

Rank: Status: S4/G5 

Wetland Status: FACU 

Flowering & Reproduction: Early Summer, June-early July, vernal panicles, autumnal panicles late July-September; spikelets mature within month of pollination 

Comments: Variety fasciculatum is the most common and widespread variety of Dichanthelium acuminatum.  The Flora of North America describes this variety as highly variable and difficult to distinguish from other small stature varieties such as Dichanthelium acuminatum avr. implicatum.  One useful character to use for varietal separation is the width of the cauline (>6mm) leaves and shorter hair (<3mm) on the upper leaf surface. 

Reference Specimen: Hunterdon Co., Sargentsville, Vince Abraitys CHRU# 109138, dry sandy roadside, 7/2/1978 Current distribution map reflects author and Chrysler herbarium specimens and Hough, 1983. 

JRA, 3/2012

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Filed Under: Dichanthelium

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