248 BOTANY. 



stamens inserted near the top of the tube, unequal, included; style about 

 equahng the stamens, cleft one-third its length; nutlets globose-oyate, 

 attached by the inner angle, dull-gray, minutely papillose, scarcely i" in 

 width ; pericarp thin and brittle ; albumen none or very thin ; cotyledons 

 ovate, entire; radicle very short.— Western Texas, New Mexico, Northern 

 Arizona, and Southern Utah, (Palmer, 1870.) 



CoLDENiA NuTTALLii, Hook. {TiquUiu hxvifoUa, Nutt. Bot. Mex. 

 Bound. 136.) Annual, prostrate, diffusely branched, densely pubescent and 

 hirsute with stiff white hairs ; stems 3-15' long ; leaves 2-3" long, equaling 

 the petioles, ovate or rhomboidal, entire, strongly plicate-veined, margins 

 revolute, somewhat fascicled; flowers numerous in axillary and terminal 

 clusters, with narrow-subulate bractlets ; calyx deeply 5-cleft, 1-2" long, the 

 lobes linear and hirsute ; corolla white, 2" long, funnelform with spreading 

 lobes, with 5 scales at the base of the tube ; stamens with very short fila- 

 ments, inserted in the throat ; style included ; nutlets ovate, 4" long, smooth 

 and shining, free at base and attached only to the style by a ventral sulcus 

 nearly its whole length ; albumen none ; cotyledons 2-parted, accumbent to 

 the radicle on each side. — Excellently figured in Bot. Wilkes's Exped., ined., 

 t. 12. Southern California and Arizona; Oregon, (Wilkes, Geyer;) near 

 Carson City, (339 Torrey.) Truckee and Carson Deserts and in Unionville 

 Valley, Nevada ; 4-5,000 feet altitude ; June-August. (863.) 



Heliotkopium Curassavicum, L. Virginia to Florida on the seacoast, 

 and in saline or alkaline localities westward to Southern Illinois, Dakota, 

 Oregon, California and Mexico. Truckee, Humboldt and Jordan Valleys, 

 Nevada and Utah ; 4-4,500 feet altitude ; May-August. Stems prostrate or 

 ascending ; flowers white. (864.) 



HYDROPHYLLACEiE.i 



Hydeophylldm maceophyllum, Nutt. Ohio, Indiana, and Kentucky. — 

 Var. occiDENTALE. Very variable in the degree of hispidness, in the size 

 and section of the leaves, in the length of the peduncles and denseness of 

 the inflorescence, and tending toward H. capitatum, from which it may be 

 distinguished by its usually larger size, the oblong-lanceolate leaves (4-8' 



1 The determinations under this order are due to Dr. John Torrey, (except in the very few oases 

 where it is otherwise indicated,) and the descriptions of the new species were made with the aid of notes 

 and sketches kindly furnished by him. 



