Northern Shorthusk (Brachyelytrum aristosum)
Description
In addition to the pubescence features noted in the key, B. aristosum typically has 3-5-nerved lemmas, florets ca. 8-10 mm long (excluding awn) and 0.7-1.3 mm wide, anthers not over 4 mm long, and more than 15 cilia per 5 mm of leaf margin. Brachyelytrum erectum has more strongly (5-) 7-9-nerved lemmas, at least the larger florets ca. 10-12 mm long and 1-1.6 mm wide, anthers more than 5 mm long, and fewer than 10 cilia per 5 mm of leaf margin. Widespread in Michigan, but more common northwards.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Liliopsida
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Order: Poales
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Family: Poaceae
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Genus: Brachyelytrum
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