Weed
spikeSpike:
Has a strong central axis (rachis) on which flowers or spikelets are directly attached (sessile), e.g. wheatgrasses.
bentgrass
FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
EllipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.
Brown
Smooth
ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
transparent, smooth
Transparent, enclosed in lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
AwnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
is straight and is an extension of the midnerve.
Bristly hairs on lateral sides of callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
.
State Noxious Weed: Delaware, Maryland, New Hampshire, New Jersey, Pennsylvania, Virginia, West Virginia
Not included
For more information, see ISMA fact sheet, Agrostis spp.
Poaceae
Agrostis exarata Trin.
Agrostis aenea Trin.
Agrostis alaskana Hultén
Agrostis ampla Hitchc.
Agrostis asperifolia Trin.
Agrostis exarata Trin. var. minor Hook.
Agrostis exarata Trin. var. monolepis (Torr.) Hitchc.
Agrostis exarata Trin. ssp. minor (Hook.) C.L. Hitchc.
Agrostis exarata Trin. var. purpurascens Hultén
Agrostis exarata Trin. var. pacifica Vasey
Agrostis longiligula Hitchc.
Agrostis longiligula Hitchc. var. australis J.T. Howell
Agrostis melaleuca (Trin.) Hitchc.
Agrostis microphylla Steud. var. major Vasey
