66 Trans. Acad. Sci. of St. Louis. 



Tricuspis stricta CNutt.) Thurb. Ms. name. 



Sieglingia stricta (Nutt.) O. Kuntze, Rev. Gen. PI. 2: 789. 1891. 



Culms 4.5-12 dm. tall, erect, a little compressed. Leaves 

 1.5-3 dm. long or more, flat, long-acuminate, smooth beneath, 

 scabrous above; spike-like panicle 1.25-3 dm. in length, 

 the branches appressed, the lower 2.5-5 dm. long; spike- 

 lets 4-10-flowered, 4-6 mm. long; lower scales usually about 

 two-thirds as long as the spikelets, rarely extending beyond 

 the flowering scales, acute, glabrous ; flowering scale ovate, the 

 nerves pilose for more than half their length, the middle and 

 often the lateral excurrent as short tips. Low prairies and 

 marshes; common. July to October. Perennial. 



Carolinian and Louisianian areas. Alabama and Mississippi 

 to Louisiana, Arkansas, Kansas, Indian Territory, Oklahoma, 

 Texas and Arizona. 



Type locality not ascertained. 



Specimens examined. — Alabama : Wilcox County, S. B. Buckley, 1878. — 

 Mississippi: Starkville, Kearney, 81, 1896. — Louisiana: Lake Charles, 

 Tracy, 3964, 1897; same locality, K. K. Mackenzie, 448, 1898; Feliciana, Car- 

 penter. — Arkansas: Fayetteville, Harvey, 73. — Indian Territory: Tulsa, 

 Creek Nation, Bush, 795, 1894; Sapulpa, Creek Nation, Bush, 14 j4, 1895. — 

 Kansas: Crawford County, Hitchcock, 917, 1896. — Texas: Texarkana, 

 Heller, 4248, 1898; Dallas County, Beverchon, 12365; Columbia, Brazoria 

 County, Bush, 1668, 1900; Houston, Lindheimer, 1840. — Oklahoma: Still- 

 water, Waugh, 60, 1893. 



2. Triodia albescens (Munro) Benth. ex Vasey, Gr. U. S. 

 35. 1883. 



Tricuspis albescens Munro, A. Gray, Proc. Phila. Acad. Nat. Sci. 1862 : 



335, name only. 1863. 

 Sieglingia albescens (Munro) O. Kuntze, Rev. Gen. PI. 2 : 789. 1891. 

 Bhombolytrum albescens (Munro) Nash in Britton, Man. Nor. States & 



Can. 129. 1901. 



Culms 3-5 dm. tall, tufted, the sterile shoots one-half as 

 long as the culm or more. Leaves smooth beneath, roughish 

 above, acuminate, 6.25-27.5 cm. long, 2-4 mm. wide, panicle 

 dense and contracted, white, 6.25-12.5 cm. long, 6-18 mm. 

 broad, its branches erect or ascending, 2.5 cm. or less long ; 

 spikelets 7-11-flowered, 4-5 mm. long, the lower scales white, 

 1-nerved, about equal; flowering scales about 3 mm. long, 

 3-nerved, the lateral nerves vanishing below the apex, the 



