Bromus latiglumis

(Scribn. ex Shear) Hitchc.
Common names: Hairy woodbrome Flanged brome Brome a larges glumes
Synonyms: Bromus purgans var. latiglumis unknownIncanus unknownIncanus unknownBromus altissimus unknown
Treatment appears in FNA Volume 24. Treatment on page 209.
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Plants perennial; not rhizomatous. Culms 80-150 cm, erect; nodes 9-20, glabrous, usually concealed by the leaf sheaths; internodes usually glabrous, sometimes hairy just below the nodes. Sheaths overlapping, densely to moderately retrorsely pilose or glabrous over most of their surface, throats and collars densely pilose; auricles 1-2.5 mm on most lower leaves; ligules 0.8-1.4 mm, hirsute, ciliate, truncate, erose; blades 20-30 cm long, 5-15 mm wide, flat, usually glabrous, rarely pilose, with 2 prominent flanges at the collar. Panicles 10-22 cm, open, nodding; branches spreading to ascending. Spikelets 15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-9 florets. Glumes pubescent or glabrous; lower glumes 4-7.5 mm, 1(3)-veined; upper glumes 6-9 mm, 3-veined, sometimes mucronate; lemmas 8-14 mm, elliptic to lanceolate, rounded over the midvein, backs glabrous or pilose to pubescent, margins long-pilose, apices obtuse to acute, entire; awns 3-4.5(7) mm, straight, arising less than 1.5 mm below the lemma apices; anthers 2-3 mm. 2n = 14.

Distribution

Conn., N.J., N.Y., Del., D.C, Wis., W.Va., Kans., N.Dak., Nebr., S.Dak., N.H., N.C., Pa., Alta., B.C., Man., N.B., Ont., Que., Sask., Va., Vt., Ill., Ind., Iowa, Maine, Md., Mass., Ohio, Mo., Minn., Mich., Mont., Tenn., Ky.

Discussion

Bromus latiglumis grows in shaded or open woods, along stream banks, and on alluvial plains and slopes. Its range is mainly in the north-central and northeastern United States and adjacent Canadian provinces. Specimens with decumbent, weak, sprawling culms, densely hairy sheaths, and heavy panicles can be called Bromus latiglumis i. incanus (Shear) Fernald.

References

None.

Lower Taxa

No lower taxa listed.