2 



second and third glumes 5-nerved, broadly ovate, oblong, obtuse, minutely 

 pubescent at the apex, slightly exceeding the fourth or flowering glume, 

 which is about 2.5 mm. long, contracted at the base and depressed on the 

 back, the obtuse and somewhat hooded apex shortly apiculate. Palea glab- 

 rous, about as long as the glume which it resembles in color and texture. 

 Type specimen from near Jalapa, State of Vera Cruz. C. G. Pringle, No. 9208, 

 May 13, 1900. Allied to Ichnanthus lanceolatus Scribn., from which it is at 

 once distingiiished by its narrower, sessile leaf blades, more obtuse and 

 somewhat shorter spikelets, and distinctly apiculate fourth glume. 



Agrostis nana (Presl) Ktmth, Enum. 1:266. 1833. {Tricodium nanmn J. S. 

 Presl in C. B. Presl Reliq. Haenk. 1: 243. 1880.) On cliffs near Fort 

 Bragg, Mendocino County, Cal., No. 6159, Jos. Burtt Davy and Walter C. 

 Blasdale. 



The type locality of this species is doubtfully given by Presl as Peru. The 

 original specimens might, however, have come from the California coast, 

 where Haenke also made collections. Agrostis nana Kunth, as represented 

 by specimens in the herbarium of the Missouri Botanical Garden and illus- 

 trated by figure 2, plate 84, in the Tenth Annual Report of Missouri Botani- 

 cal Garden, is a much smaller plant than that collected by Davy and 

 Blasdale ; but the habit of growth, and size and character of the spikelets are 

 identical, and the very full description given by Presl applies so closely to 

 our plant that there can be little doubt of its identity. The characters of 

 the Mendocino plant are as follows : 



A densely caespitose, wiry, glabrous perennial 1-2 dm. high, with involute 

 filiform leaves and strict, few-flowered panicles 2-4 cm. long. Ligule 1.5 mm. 

 long, cleft in three divisions, the lateral divisions auriculate. Leaf -blades of 

 the culm about 2 mm. wide. The axis of the panicle and the closely 

 appressed branches are 1 cm. long or less, strongly scabrous. Spikelets on 

 short, rigid, appressed, scabrous pedicels ; outer glumes nearly equal or the 

 first a little longer than the second, about 3 mm. long, scabrous on the back, 

 especially along the keel, broadly lanceolate and acute ; flowering glumes 

 about 1.8 mm. long, oblong truncate, and erose dentate at the apex, awnless 

 or very short-awned just above the middle. Palea minute or wanting, 

 callus short, obtuse. 



The only manifest difference between our plant and that of Presl is in the veg- 

 etative characters which are most likely to vary. 



Agrostis pringlei Scribn., U. S. Dept. Agr. Div. Agros. Bui. 7:156, fig. 13S. 

 1897. Along cliffs at Point Arena, Mendocino Coiinty, Cal. , No. 6030, Davy 

 and Blasdale. 1899. 



These specimens represent a multi-branched form of the species, with panicles 

 more densely flowered than in the type, but the essential characters of the 

 spikelets, root habits, and foliage are those of Agrostis pringlei. This species 

 is remarkable for the long hairs at the base of the floret. These hairs are 

 1-2 mm. long. 



AGROSTIS VIRESCENS MICROPHYLLA (Steud.) Scribn. n. comb. 



{Agrostis viicrophylla Steud. Syn. PL Gram. 164. 1854). Dry places in 



meadows near Sherwood Valley, Mendocino County, Cal., No. 5142, Davy 



and Blasdale, 1899. 

 Culms very slender, 1-1.5 dm. high, apparently annual. Leaves 1-2 cm. long; 



ligule about 2 mm. long. Panicle densely flowered, 1-3 cm. long, purplish. 



Empty glumes lanceolate, scabrous, long acuminate, subulate pointed ; the 



first 3.5-4 mm. long, little exceeding the second; flowering glumes 1.5 mm. 



long, scarcely one-half the length of the outer glumes, awned on the back near 



