Achnatherum nelsonii subsp. nelsonii

unknown
Common names: Nelson's needlegrass
Synonyms: Stipa columbiana nelsonii
Found in FNA Volume 24. Treatment on page 124.
Calluses sharp, acute to acuminate, glabrous tips 0.05-0.15 mm, dorsal boundary of the glabrous tip and the callus hairs acute; awns 19-45 mm.

Discussion

Achnatherum nelsonii subsp. nelsonii intergrades with subsp. dorei in Montana and Wyoming, and with A. occidentale subsp. pubescens in California. Its range extends from Idaho and Montana south to Nevada. It tends to grow at lower elevations than subsp. dorei.

References

None.

AuthorMary E. Barkworth +
Common nameNelson's needlegrass +
ReferenceNone +
SynonymStipa columbiana nelsonii +
Taxon nameAchnatherum nelsonii subsp. nelsonii +
Taxon parentAchnatherum nelsonii +
Taxon ranksubspecies +
VolumeVolume 24 +