Vascular Plants of North Carolina
Account for Blackseed Needlegrass - Piptochaetium avenaceum   (L.) Parodi
Members of Poaceae:
Only member of Piptochaetium in NC.
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Section 5 » Order Cyperales » Family Poaceae
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Author(L.) Parodi
DistributionEssentially throughout the state. The existing gaps will likely be filled by additional collecting.

MA to southern IL and OK, south to central FL and southern TX.
AbundanceGenerally common in the Piedmont; fairly common to common in much of the central and western Piedmont and Sandhills. Fairly common in the Mountains and parts of the lower Coastal Plain.
HabitatDry to xeric, often rocky, oak-hickory and hardwood-pine slopes, ledges and outcrops, open woodlands, forest openings, glades, wooded roadsides. It shows a preference for open understory with little competition from shrubs.
PhenologyFlowering and fruiting late March-June.
IdentificationThe stems grow mostly 1.5-2.5 feet tall, from a tuft of skinny, revolute (rolled under and rounded in cross-section) leaves. The open, lax, terminal inflorescence is notable for the very long awns reaching 4-7.5 cm (up to 2-3 inches). The lemmas are brown to blackish.
Taxonomic CommentsLong known by the name Stipa avenacea.

Other Common Name(s)Blackseed Speargrass, Black Oatgrass
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Global RankG5
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B.A.SorrieMorrow Mountain SP, May 2008. StanlyPhoto_natural
B.A.SorrieRoadside edge of mixed woods, Wadsworth Road, May 2015.
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