THE YUCCEAE. 59 



smaller seeds. Specimens examined: "Deserts of the 

 Colorado river" (Bigelow in 1853 and 1854); Grand 

 canon region, Ariz. (Tourney in 1892, Trelease in 1901); 

 '* Arizona" (Palmer, 799); "Southern Utah, northern 

 Arizona, &c." (Palmer in 1877); St. George, Utah 

 (Palmer in 1870) ; and La Verken, Utah (Jones, 5180). 



Y. Harrimaniae Trelease. 



Acaulescent, often cespitose. Leaves linear to spatulate-lanceolate, 

 usually 6 to 15, or even 40 mm. wide, thin but firm, rigidly spreading, 

 glaucous, or green with age, concave, pungent, narrowly brown-bor- 

 dered, with relatively coarse, at length circinate, white marginal fibers. 

 Inflorescence .25 to .5 m. high, simple, flowering from close to the base, 

 glabrous. Flowers greenish, large, with broad often obtuse segments : style 

 slender. Capsule brown, broadly oblong, about 40 mm. long, constricted, 

 flaring above, the valves sometimes attenuate-mucronate : seeds 4 to 5X 5 

 to 6 mm. Plates 28. 29. 83, f. 10. 



Utah: Cedar City (Parry, July 6, 1874), Near King- 

 ston (Jones, 5322), Helper (Trelease in 1899 and 1901), 

 to western Colorado: Cimmaron (Baker, 281), on 

 gravelly hillsides. Plate 93, f. 1. 



A very distinct species, often flowering when the leaf- 

 rosette is not over a span wide, the broadly spatulate 

 foliage of these small plants being strikingly unlike that of 

 any other mature Yucca. My first acquaintance in the 

 field with this plant resting upon the detention of our 

 train at Helper, Utah, because of a washout, on the 

 return of the Harriman Alaska Expedition, I take pleas- 

 ure in dedicating it to our hostess on that occasion, Mrs. 

 Edward H. Harriman. 



22. Style stout, green. 



3. Inflorescence racemose or branched close to the leaves. 



Y. GLAUCA Nuttall, Eraser's Cat. no. 89. (1813). Pit- 

 tonia. 2: 115. Coulter, Contr. U. S. Natl. Herb. 

 2:437. Trelease, Kept. Mo. Bot. Gard. 4:205. 

 6. pi. facing p. 7. Schimper, Pflanzengeographie. 



