Weed
medusahead, medusahead rye
FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
Lanceolate
Brown
LemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
surface is very scabrousScabrous:
Rough to the touch, covered with minute points of very short, stiff hairs.
; paleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
keels have strong wide-spaced teeth.
Nearly surrounds the floretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil. It extends into a long awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
at apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
Concave with keels turned in and nearly touching
Flat awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae)., 5 to 10 cm long. CallusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
is below a transverseTransverse:
Set crosswise, crossing or at right angles.
groove.
FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil. is compact and has a very long awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).. LemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla. surface is very scabrousScabrous:
Rough to the touch, covered with minute points of very short, stiff hairs.
. PaleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo. has sharp wide-spaced teeth on its keel.
State Noxious Weed: California, Colorado, Hawaii, Idaho, Montana, Nevada, Utah, Washington, Oregon
Included
For more information, see ISMA fact sheet.
Poaceae
Taeniatherum caput-medusae (L.) Nevski
Elymus caput-medusae L.
Taeniatherum asperum auct. non (Simonkai) Nevski
Taeniatherum crinitum (Schreb.) Nevski var. caput-medusae (L.) Wipff
