304 
A. S. HITCHCOCK 
It seems more in accord with the facts to consider Agrostis exarata 
to be a polymorphous or variable species including the above men- 
tioned forms as varieties. The United States specimens referred to 
Agrostis glomerata (Presl) Kunth^ appear to be better placed under 
A. exarata. 
Agrostis Schiedeana Trin. Mem. Acad. St. Petersb. VI. Sci. Nat. 4^: 
327. 1841. 
The type of this comes from Mexico. The specimens from the 
United States that have been referred to this species^ prove to belong 
to A. oregonensis Vasey. The type of A. Schiedeana belongs to A. 
perennans. The specimens cited under A. Schiedeana in Mexican 
Grasses/^ all from the plateau of Mexico, belong to A. Bourgaei 
Fourn., a valid species. 
Calamagrostis scabra Presl, Rel. Haenk. i: 234. 1830. 
This species has been included under C. Langsdorfii Trin. (Gram. 
Unifl. 225. 1824), which differs in having longer callus hairs and 
less scabrous glumes. The latter is referred by Hackel to C. villosa 
Mutel; as a variety (C. Halleriana Langsdorfii Hack, in Sommier, 
Nuov. Giorn. Bot. Ital. 25: 98. 1893; C. villosa Langsdorfii Hack. 
Bull. Herb. Boiss. 7: 650. 1899). Calamagrostis scabra is closely 
related to C. canadensis (Michx.) Beauv. and may be only a form or 
variety of that species. The former appears to be confined to the 
vicinity of the coast of Alaska and southward while the latter is the 
dominant grass of the interior of Alaska. Presl's species was first 
described from Nutka Sound, Vancouver Island. 
Notholcus mollis (L.). Holcus mollis L. Syst. Nat. ed. 10. 2: 1305. 
1759- ^ 
This species not previously reported from the United States has 
been sent to the U. S. National Herbarium from Eureka, California, 
by Mr. Joseph P. Tracy. It differs from N. lanatus, common on the 
Pacific Coast, in having creeping rhizomes and glabrous sheaths. 
Sphenopholis pennsylvanica (L.). Avena pennsylvanica L. Sp. PI. 79. 
1753- 
Scribner^^ in his article on Sphenopholis takes up Michaux's name 
8 See North American Species of Agrostis, U. S. Dept. Agr. Bur. PI. Ind. Bull. 
68: 30. 1905. 
^ See North American Species of Agrostis, op. cit. 
loContr. U. S. Nat. Herb. 17: 319. 1913. 
Rhodora 8: 137-146. 1906. 
