54 MISSOURI BOTANICAL GARDEN. 



barium consists of loose flowers, some of which have a 

 short thick green style, while others have the style 

 longer, slenderer, and white; while the fragments of in- 

 florescence are equally suggestive of mixed material, some 

 of which was from racemes while the rest represent pan- 

 icle branches. Field observation the present season, and 

 material received from Mr. J. Eeverchon, of Dallas, and 

 Mr. J. A. Harvey, of Sealy, confirm the conclusion reached, 

 that the grass-leaved Yuccas of eastern Texas comprise three 

 species, Y. ArJccmsana, Y. Louisianensis, and the one 

 here characterized. 



Y. CONSTRICTA Buckley, Proc. Acad. Nat. Sci. Philadelphia. 

 1862:8. Gray, Proc. Acad. Phila. 1862:167.- 

 Engelmann, Trans. Acad. St. Louis. 3:213. Bot. 

 Gazette. 7 : 17. 



? Y. alba-spica Koch, Belg. Hort. 12: 111. (1862). Rev. Hort. 1865 : 

 151. 48 : 432. ? Flore des Series. 17 : 110. f. 1612. Engelmaun, 

 Trans. Acad. St. Louis. 3 : 213. Garden. 8 : 147. 

 Y. angustifolia Carriere, Rev. Hort. 1860 : 20. /. 3, 4. 1864 : 151. 



Garden. 8: 134. /.Bray, Bot. Gaz. 32:280, in part*. 

 F. glauca Bray, 1. c. 271. /. 18, in part*. 



Low or acaulescent. Leaves rather rigidly divergent, about 10 mm. 

 wide, whitish green, the white margin soon shredding into fine threads. 

 Inflorescence about 1.5 m. high, rather amply branched at top. Flowers 

 white, globose-campanulate, with broad segments : style white, more or 

 less tumid. Capsule constricted, flaring above, dark, with a ridge over 

 each false septum: seeds 5 to 6X 7 to 9 mm. Plates 20. 21, f. 1. 83, 

 f.4. 



Seward County, Kansas, to the Pecos river region of 

 Texas. Plate 92, f. 2. 



Among other plants from western Texas which Mr. S. B. 

 Buckley characterized about forty years ago was a Yucca 



* As is more clearly shown in a print from his negative, furnished me 

 by Professor Bray, than in his published figure, the latter represents two 

 species, Y. glauca, with simple racemes in full bloom, and Y. constricta, 

 with branched pedunculate inflorescence still in bud. 



