72 Trans. Acad. Sci. of St. Louis. 



Specimens examined.— Texas: Saa Diego, Duval County, iVeaZiej/, 96. 

 1892. 



12. Triodia Lanqloisii (Nash) B. F. Bush. 



Tricuspis Langloisii Nash, N. Y. Bot. Gard. Bull. 1 : 293. 1899. 



Culms 5-15 dm. tall, erect, tufted, round ; basal leaves 

 crowded, equitant and shining: culm leaves two or three; 

 sheaths coarsely striate, much shorter than the intervals, 

 often pilose at the apex; ligule a ring of copious silvery 

 hairs about 1 mm. long; blades erect or ascending, flat, 

 sometimes folded when dry, glaucous and minutely pubescent 

 on the upper surface, long acuminate, the basal 2-4 dm. long 

 and 2-5.5 mm. wide, the lower culm leaves 7-15 cm. long, and 

 2-3.5 mm. broad, the upper blade much smaller, 2 cm. 

 or less long; panicle narrow, 1-2 dm. long, about 2 cm. 

 broad, its triangular branches arranged singly, rarely in pairs, 

 erect or nearly so, the larger 6-10 cm. long and usually sub- 

 divided ; spikelets 6-7 mm. long, oval when mature, appressed 

 to the branches, on stout pedicels about 1 mm. long; scales 

 six to eight, the outer empty two acute, 1-nerved, or the 

 second rarely 3-nerved, the lower half with ascending hairs 

 about 5 mm. long, the callus pilose, the lower scales about 

 4 mm. long, and 2.25 mm. wide when spread out ; palet as long 

 as or a little shorter than the scale, 2-nerved, the nerves ciliate 

 and about equally curved at the base and the apex, hence the 

 internerve is elliptic or nearly so, about 1.6 mm. wide. Pine- 

 woods and clearings. Perennial. 



Louisianian area. Florida, Mississippi and Louisiana. 



Type locality : " Slidell, Louisiana, in pine-woods clear- 

 ings; collected by A. B. Langlois; type in Herbarium of 

 Geo. V.Nash." 



Specimens examined. — Florida: No locality given, Chapman, several 

 collections. — Mississippi: Biloxi, Tracy, 1891; same locality^ Tracy, 

 1897; same locality, Zear/iey, 208, 1896 ; Waynesboro, Kearney, 114, 1896; 

 Bayou Porto, Tracy, 3869, 1897. — Louisiana : Slidell, Langlois, 1891. 



13. Triodia Drummondii (S. & K.) B. F. Bush. 

 Tricuspis Drummondii S. & K. Bull. U. S. Agrost. 4 :37. 1897. 



Culms 12-16 dm. tall, slender, erect, from strong, scaly 

 rootstocks. Radical leaves 24-48 cm. long; nodes 2-4, dark 



