Buchloe dactyloides (Nutt.) Engelm.
Family: Poaceae
buffalograss
[Anthephora axilliflora ,  more]
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Perennial herb, spreading by runners, sometimes mat-forming 1 - 32 cm tall Leaves: with an open sheath that is often sparsely soft-haired near the collar, and a 0.5 - 1 mm long ligule that is either membranous or composed of hairs. The blade is 2 - 15 cm long, 1 - 2.5 mm wide, usuallly flat near the base but with the margins rolling toward the upper surface of the midvein (involute) at the tip, curling when dry, and hairless or sparsely soft-haired. Flowers: either male or female, borne on separate plants (dioecious). Fruit: a caryopsis, 2 - 2.5 mm long. Culm: 1 - 30 cm long, erect, usually unbranched, with mostly hairless nodes. Culms bearing female inflorescences are much shorter than those bearing male inflorescences. Male inflorescence: terminal, branched (panicle), usually rising above the upper leaves, with spikelets arranged in two rows on the one to four branches. Female inflorescence: terminal, branched (panicle), partially surrounded by the leaf sheath, with two to four branches (2.5 - 4.5 mm long) and three to seven spikelets per branch. Male spikelets: 4 - 6 mm long, 1.3 - 1.8 mm wide, consisting of two florets. Female spikelets: 7 mm long, about 2.5 mm wide, consisting of one floret. Male florets: with unequal glumes that are hairless and one- or two-veined, hairless lemmas that are three-veined and unawned, and brownish to red or orange anthers 2.5 - 3 mm long. Female florets: with the upper glume nearly surrounding the floret and the lower glume irregular and reduced. The branch axes and base of the upper glumes are white, spherical, hardened, and have three awnlike teeth. Lemmas are membranous, three-veined, and hairless.

Similar species: No information at this time.

Flowering: early June to late August

Habitat and ecology: Introduced from the western United States, this species grows in railroad ballast and mowed turf.

Occurence in the Chicago region: non-native

Etymology: Buchloe comes from the Greek words bous, meaning "cow or ox," and chloe, meaning grass. Dactyloides means "like Dactylis," another grass species.

Author: The Morton Arboretum

Staminate culms 1-2 dm, the pistillate 2-5 cm; lf-blades sparsely pilose, 3-10 cm, ca 2 mm wide; staminate spikes 6-15 mm; pistillate spikelets (second glume) 6 mm; 2n=40. Dry prairies and plains; w. Minn. and w. Io., n. to Alta., w. to the mts., s. to Ariz. and N.M.; the most important constituent of the short-grass prairies. (Bulbilis d.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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Dill, Isabel  
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Greg Goodwin  
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Dill, Isabel  
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