288 Bulletin No. 205 [March, 



on the ground, 1 to 3 feet long; sheaths smooth and glabrous, some- 

 times eiliate on the margins, but never pubescent; blades long, but 

 seldom more than 8 inches, 4 to 8 mm. wide, smooth; racemes 2 to 

 6, commonly 2 or 3, hairy in the axils, not over 3.5 inches long ; spike- 

 lets arranged singly in two rows, smooth, 2.5 to 2.9 mm. long. 



This is one of the commonest species of Paspalum in localities where 

 this genus is found. There are two varieties, P. laeve australe, which 

 has blades pilose above and sometimes towards the base beneath, and 

 P. laeve aiigustifoliuni, which has much longer blades, usually over 

 8 inches, commonly folded, with a few hairs on the upper surface, and 

 racemes which are usually four inches in length. These varieties are 

 usually found in the same localities as the s;pecies, but none have, as 

 yet, been seen from Illinois. This species is usually found in moist 

 fields and meadows. 



ILLINOIS SPECIMENS: Without locality, southern Illinois, Vasey. hender- 

 .■^ON CO. Orirawka, Palierton, Sept., 1877. marion CO. Without locnlitv, M. S. 

 Be})!} in 1860, peoria co. Peoria, Brendel in 1853. perry co. Du Quoin, Sey- 

 7novr, Aiijj-., l.'SO. ST. (lair ( o. Mn?enutah, Welsch. wabash < o. Without lo- 

 cality, Shearer; Mt. Carmel, Tatterson, Sept., 1877. 



Paspalum long-epedunculatum Le Conte 

 Long-.stalked Paspalum (Figs. 37 and 44) 



Culms usually spreading or reclining, slender, smooth, 12 to 20 

 inches long ; leaves mostly clustered at the base of the plant ; sheaths 

 smooth ; blades long-ciliate on the margins, usually smooth on both 

 surfaces, but sometimes pubescent on the upper surface ; blades usually 

 not over four inches long, 4 to 6 mm. wide ; racemes 1 or 2 on a very 

 long, slender peduncle; spikelets in pairs, smooth, 1.5 to 1,7 mm, long. 



This species is found in dry or sandy soil in about the same situa- 

 tions as P. mulilenhergii. 



PEORIA CO. Peoria, McDonald, Sept., 1900. rock island co. Hock Island, 

 banks of the Mississippi river, McDonald, Aug., 1900. 



Paspalum long-ipilum Nash 

 Long-haired Paspalum (Fig. 45) 



Paspalum plenipilum, Gray's Manual, 7th ed., Britton '07. 



Culms erect, 1 to 3 feet long, smooth ; sheaths flattened, with hairs 

 about equal to the sheath in width, more numerous along the margin 

 and midnerve; blades usually erect, often folded, densely pubescent 

 on the upper surface, the hairs longer near the base, less densely pubes- 

 cent on the lower surface ; racemes 2 to 6, usually 3, on a long peduncle, 

 densely hairy in the axils; spikelets oval, smooth, arranged singly, 

 2.5 to 2.8 mm. long. 



This species somewhat resembles P. laeve, but is distinguished by 

 the pubescent slicatlis. The hairs on sheaths and blades are much 

 longer than in eitlicr variety of P. laeve. * 



RICHLAND CO. Olney, Sidgway, in 1914. wabash co. Without locality. 

 Shearer. 



