248 BOTAKY. 
stamens inserted near the top of the tube, unequal, inchided ; style about 
equaling the stamens, cleft one-third its length; nutlets globose-ovate, 
attached by the inner angle, dull-gray, minutely papillose, scarcely 4" 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. {TiquUia brevifolia, 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.) 
Heliotropium 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.) 
HYDROPHYLLACE^.i 
Hydrophyllum macrophyllum, Nutt. Ohio, Indiana, and Kentucky. — 
Van 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. capitatu7n, from which it may be 
distinguished by its usually larger size, the oblong-lanceolate leaves (4-8' 
1 The d.'tcnuinatioiis xmwv this order are due to Dr. John Torrey, (except in the xcvy few cases 
wliiiv if is (,thei\N isr indicated,) aiid the descriptions of the new species were made with the aid of notes 
and skcd < l<iiidl.v liirnisihed by In'ni. 
