iQii] BRIEFER ARTICLES 301 



usually but a single leaf about midway on the culm, the sheath 

 with a few scattered long hairs or glabrous; ligule membranaceous, 

 about o . 5 mm. long; blades flat or somewhat involute from a folded 

 base narrower than the summit of the sheath, 3-7 cm. long, 1-2 

 mm. wide, more or less curled, glabrous on both surfaces or minutely 

 puberulent on the upper, a few stiff hairs on the margin and rarely 

 on the upper surface, the blade of the uppermost leaf reduced to a 

 mere tip; raceme 2-3.5 c^- long, slightly curved, a few long hairs 

 at the base; spikelets solitary, on very short, flattened, scabrous 

 pedicels, closely imbricated, almost concavo-convex, i . 3-1 . 5 mm. 

 long, about 0.7 mm. wide, oval, glabrous; second glume 3-nerved, 

 the sterile lemma with a nerve near either margin, the midnerve 

 suppressed or apparent only at the summit; fruit nearly as large 

 as the spikelet. 

 Type U.S. National Herbarium no. 618,754; collected August 30, 1909, on 

 "Obispo hill, near Sancti Spiritus," by Brother Leon (no. 950). 



This species is most nearly related to Paspalum rupestre Trin., from single- 

 spiked specimens of which it may be distinguished by the more delicate culms 

 and the more closely imbricated, glabrous spikelets, the second glume with 

 the midnerve suppressed. 



Paspalum Leoninum is named in honor of Brother Leon, of the Colegio 

 de la Salle, Vedado, Habana, whose collections have added greatly to our 

 knowledge of the grasses of Cuba. 



A second collection of this species was made on the Jata Hills, Guanabacoa, 

 September 12, 1909, Leon 949. 



Cenchrus myosuroides H. B. K. Nov. Gen. & Sp. i : 115. 1816. 



Santiago de Cuba, Leo;j 835. / / 



GouiNiA POLYGAMA Fourn. Mex. PL 2 : 103. 1886. 

 Cojimar, Leon 2014. 



Arundo Donax L. Sp. PI. 81. 1753. 



Marianao, Leon 1523. Escaped from cultivation. 

 LoLiUM TEMULENTUM ARVENSE (With.) Bab. Man. Brit. Bot. 377. 1843. 



Habana, Zedw 1583. Intrbduced. 



it may be well to record here certain changes in the names of a few 

 species of Panicum listed in the Catalogue, as shown by the recent revi- 

 sion of this group. 4 » 

 Panicum aquaticum Poir. This is a synonym of P. dichotomiflorum 



Michx. The Cuban species is P. elephantipes Nees. 

 Panicum compactum Sw. = Lasiacis compacta (Sw.). 



4 Hitchcock and Chase, Contr. Nat. Herb. 15:1-396. 19 10. 



