Brachyelytrum aristosum

(Michx.) R Beauv. ex Branner & Coville
Common names: Northern shorthusk
Synonyms: Brachyelytrum septentrionale Brachyelytrum erectum var. septentrionale Brachyelytrum aristatum
Treatment appears in FNA Volume 24. Treatment on page 60.
Culms (28)41-78(96) cm long, 0.6-1 mm thick; nodes densely pilose; internodes glabrous or hispid, occasionally retrorsely pubescent near the nodes. Sheaths pubescent; ligules of middle and upper cauline blades 1.8-2.5 mm, acute, erose; blades (6.9)8.6-13 (16.1) cm long, 8-16 mm wide, abaxial surfaces sparsely pilose, adaxial surfaces with some hairs usually restricted to the veins, margins scabrous, with (1)4-10(12) prickles and (1)1-9 macrohairs per mm. Panicles (6.6)9.5-17.5 cm. Spikelets, including the awns, 23-36 mm. Lower glumes 0.1-0.4(0.9) mm, sometimes absent; upper glumes 0.6-1.7(3) mm; calluses hairy, hairs 0.2-0.5 mm; lemmas 8-10(11) mm long, 0.7-1.4 mm wide, veins scabridulous, scabrules 0.08-0.14(0.2) mm, all veins equally prominent; awns (14)17-24(26) mm; paleas 7.7-11.5 mm; anthers 2-3.5 mm. Caryopses 5.5-7.5 mm. 2n = 22.


Maine, Va., Mass., N.Y., N.C., N.J., Wis., W.Va., Mich., Minn., N.H., Vt., Tenn., R.I., Pa., Ga., Ind., Iowa, Conn., N.B., Nfld. And Labr. (Labr.), N.S., Ont., P.E.I., Que.


Brachyelytrum aristosum, like B. erectum, grows in moist woods and forests, but its primary distribution is more northern, extending from Ontario to Newfoundland, Minnesota, and Pennsylvania, and south through the Appalachian Mountains to the junction of Tennessee, North Carolina, and Georgia.

Some authors (e.g., Koyama and Kawano 1964) have called this taxon Brachyelytrum erectum var. glabratum.

As discussed under B. erectum, that name is a nomenclatural synonym of B. erectum sensu stricto. Nevertheless, most plants identified as B. erectum var. glabratum will be found to be B. aristosum.

Selected References


Lower Taxa


AuthorStephen N. Stephenson + and Jeffery M. Saarela +
Authority(Michx.) R Beauv. ex Branner & Coville +
Common nameNorthern shorthusk +
DistributionMaine +, Va. +, Mass. +, N.Y. +, N.C. +, N.J. +, Wis. +, W.Va. +, Mich. +, Minn. +, N.H. +, Vt. +, Tenn. +, R.I. +, Pa. +, Ga. +, Ind. +, Iowa +, Conn. +, N.B. +, Nfld. And Labr. (Labr.) +, N.S. +, Ont. +, P.E.I. + and Que. +
IllustrationPresent +
Illustration copyrightUtah State University +
IllustratorLinda Ann Vorobik +
ReferenceNone +
Source xml grained fna xml/V24/V24 67.xml +
SynonymsBrachyelytrum septentrionale +, Brachyelytrum erectum var. septentrionale + and Brachyelytrum aristatum +
Taxon familyPoaceae +
Taxon nameBrachyelytrum aristosum +
Taxon parentBrachyelytrum +
Taxon rankspecies +
VolumeVolume 24 +