familyPoaceae
subfamilyPoaceae subfam. Panicoideae
genusDichanthelium
speciesDichanthelium acuminatum
subspeciesDichanthelium acuminatum subsp. thermale
Dichanthelium acuminatum subsp. thermale
Common names: Geyser panicgrass
Synonyms: Panicum thermale
Treatment appears in FNA Volume 25. Treatment on page 426.
Plants often densely cespitose, densely and softly pubescent throughout, with soft, thin, spreading, papillose-based hairs on the culms and lower sheaths. Culms usually over 30 cm. Midculm sheaths about 1/2 as long as the internodes; blades at midculm generally 6.5-12 cm long, usually more than 7 times as long as wide, suberect, softly pubescent on the abaxial surface, without papillose-based cilia on the distal 1/2. Primary panicles usually poorly exserted, peduncles shorter than 6 cm. Spikelets mostly 1.8-2 mm.
Discussion
Dichanthelium acuminatum subsp. thermale grows on the mineralized crust of warm, moist soil at the Geysers, Sonoma County, California; it is listed as endangered in that state.
Selected References
None.
Lower Taxa
None.
... more about "Dichanthelium acuminatum subsp. thermale"
Geyser panicgrass +
Conn. +, N.J. +, N.Y. +, Wash. +, Va. +, Del. +, D.C. +, Wis. +, W.Va. +, Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Wyo. +, N.Mex. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Calif. +, Puerto Rico +, Colo. +, Miss. +, Ala. +, Ark. +, Kans. +, Mo. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Mich. +, Minn. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Idaho +, Md. +, Ohio +, Utah +, Oreg. +, Mont. +, Pacific Islands (Hawaii) +, Nev. + and Ky. +
Present +
Dichanthelium acuminatum subsp. thermale +
Dichanthelium acuminatum +
subspecies +