4 
BOTANY. [157] 101 
Festuca scaBrELLA, Hook, Fl. Bor.—Amer. 2, p. 252, t. 233. Hills near Tomales Bay, Cali- 
fornia; April 19. A tall glaucous grass (2-3-feet high.) Spikelets 5-flowered and a rudiment. 
Pale scabrous. 
Brizopyrum Doverastt, Hook. & Arn. Bot. Beech. p. 404. Poa Douglasii, Steud. Enum. Pl. 
Glum. p. 261. Sandy sea shore. Punta de los Reyes. April 17. 
Meuica pomores, Nutt, Pl. Gamb. 1. c. Corte Madera, California ; April 20. Spikelets 
3—4-flowered, the uppermost abortive (male or neuter.) In depauperate specimens the spikelets 
are often but 2-flowered, with rudiment. 
Menica imperFecta, Trin. Gram. Suppl. in Act. Petrop. p. 59, and Icon. Gram. t. 355; Hook. 
& Arn. Bot. Beech. p. 403, (sphalm. M. imperforata.) M.celpodioides, Nees in Tayl. Ann. 
Nat. Hist. 1 p. 282; Steud. Syn. Pl. Glum. p. 291. Red-woods, April 12, (spikelets with two 
perfect flowers and a capitate rudiment; leaves glabrous ;) Mark West’s creek, California, 
April 30, (spikelets with a single perfect flower and a capitate rudiment ; leaves pubescent.) 
Untona srricta, Torr. in Ann. Lyc. N. York, 1, p. 153, & in Marcy’s Rep. p. 301 & 20. Dry 
salt marshes, Indian Territory ; August. 
" SESLERIA DAcTyLorpEs, Nutt. Gen. 1, p.165; Torr. in Emory’s Rep. p. 154,¢.10. Llano Esta- 
cado; September. As usual, with male flowers only. We have now examined specimens of this 
grass collected in very many places, and from an extensive range of country, but have not yet 
found it in seed, and very rarely with even abortive pistils. 
Bromus cartnatus, Hook. & Arn. Bot, Beech. p. 403. Mark West’s creek, April 30. As 
Hooker & Arnott truly remark, the grass is intermediate between Bromus & Ceratochloa; but 
it is nearer the former. 
Bromus Kamu, Gray, Man. Bot. N. States, p.600? Var. artstunatus; glabrius culus; panicula 
debile, ramulis elongatis divergentibus, spiculis 6-7-floris ; paleis minute pubescentibus, inferiore 
integro, apice brevissime aristata. Mark West’s creek, California. April 30. 
Bromus critatus, Linn., var. purcans, Gray, Man. ed. 2, p. 567. B. purgans, Linn. Moun- 
tain ravines, on the Pecos, New Mexico ; October. 
Arunpo Puraemites, Linn. Sandy alluvions of the Canadian river, near the Antelope Hills ; 
September. 
Exymus vittosus, Muhl. Gram. p. 175; 2. @uaBriuscuLus: radice repente; culmo foliisque 
glabriusculis ; vaginis inferioribus pubescentibus; spica erecta, spiculis 2—-(raro 3;) floris-glumis | 
lanceolato-subulatis scabriusculis breviaristatis ; palea superiore scabra arista ipsa 3-plo longiore. 
Napa Valley, California; May 6. This grass, though apparently only a variety of E. villosus, 
is also closely related to E. Europeus. 
HorpEuM PRATENSE, Huds.; Kunth, Enum. 1, p. 452. H. secalinum, Schreb. H. Chilense, 
Brongn. It is also No. 2025 of Hartweg, and No. 756 of Coulter. Corte Madera, California ; 
April. Differs from our Swedish specimens of H. pratense in the lateral flowers being one- 
valved and neuter; but in this genus the awns of the neuter flowers are variable. 
Srranton etymorpes, Raf. in Jour. de Phys. 89, p. 103; Steud. Syn. Pl. Glum. p. 351. 
Aigilops Hystrix, Nutt. Gen. 1,p. 86. Elymus? Sitanion, Schult. Mant. 2, p. 426. Polyan- 
therix Hystrix, Nees, in Ann. Nat. Hist. 1, p. 284; Hook. & Arn, Bot. Beech. p. 404. Elymus 
v. nov. gen. Torr. in Nicollet’s Rep. p. 165.. River banks, Mokelumne Hill, California; May 
17. We restore the name given by Rafinesque to this grass, because it is the earliest. Our 
California specimens are nearly two feet high. Indeed, we have never seen the plant of so 
humble a stature as that described by Mr. Nuttall. It is a widely diffused grass, being found 
from northern Minnesota to Texas, and west of the Pacific. It is often mistaken for an Elymus. 
Lepturus PanicuLatus, Nutt. Gen. 1, p. 81. Llano Estacado, and plains near Galisteo, New 
Mexico ; September—October. This species is remarkable for its triangular branching rachis 
and long very slender spikes. There is but a single one-flowered spikelet at each joint of th 
rachis, without any trace of a rudimentary flower. Glumes 2, opposite, contrary to the rachis, 
