Barkworthia stillmanii (Bol.) Romasch., P.M.Peterson & Soreng, comb. nov.,

Peterson, Paul M., Romaschenko, Konstantin, Soreng, Robert J. & Reyna, Jesus Valdes, 2019, A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, x Eriosel, PhytoKeys 126, pp. 89-125: 92-93

publication ID

http://dx.doi.org/10.3897/phytokeys.126.34096

persistent identifier

http://treatment.plazi.org/id/C64003A0-33EA-776B-739C-CD1623113A0E

treatment provided by

PhytoKeys by Pensoft

scientific name

Barkworthia stillmanii (Bol.) Romasch., P.M.Peterson & Soreng, comb. nov.
status

 

Barkworthia stillmanii (Bol.) Romasch., P.M.Peterson & Soreng, comb. nov. 

Stipa stillmanii  Bol., Proc. Calif. Acad. Sci. 4: 169. 1872 [Basionym] ≡ Achnatherum stillmanii  (Bol.) Barkworth, Phytologia 74(1): 14. 1993 - Type: USA, California, Sierra Nevada, Blue Cañon, Jul 1870, H.N. Bolander, M.D. Kellogg & co. s.n. (holotype: NY-00431576 [image!]; isotypes: GH-00017890 [image!], K-000873398 [image!], MO-3055652!, MO-3055653!, MO-3055654!, NDG-07159 [image!], US-556922!). Fig. 1 A–FView Figure 1.

Distribution and habitat.

Barkworthia stillmanii  is distributed in scattered locations in northern California (Butte, El Dorado, Nevada, Placer, Plumas, Sacramento, Shasta, Sierra, Tehama, Trinity, Tulare, and Yuba Counties) associated with yellow pine and red fir forests; 10-1500 m ( Barkworth 2007; Calflora 2018).

Comments.

In a molecular-derived phylogeny of the Stipeae  using 10 DNA markers Barkworthia stillmanii  is sister to a well-supported Piptatherum  clade, which is strictly Old World in distribution, and has cauducous awns, and dark glossy lemmas in fruit ( Romaschenko et al. 2012).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Poales

Family

Poaceae

Genus

Barkworthia

Loc

Barkworthia stillmanii (Bol.) Romasch., P.M.Peterson & Soreng, comb. nov.

Peterson, Paul M., Romaschenko, Konstantin, Soreng, Robert J. & Reyna, Jesus Valdes 2019
2019
Loc

Stipa stillmanii

Bol 1872
1872