292 CATALOGUE OF MR. GEYER’S PLANTS 
v. fere nullo. Calyx 2 lin. longus, laciniis setaceo-mucronatis. Corolle 
tubus fere 3 lin. longus, limbi laciniæ oblongæ lineam longs. Sta- 
mina ad faucem inserta, laciniis corollinis breviora. Capsula trilocu- 
laris, loculis 2—3-spermis (ovulis in quoque loculo 4?). Benth. 
1. Collomia grandiflora, Dougl. in Bot. Reg. t. 1174. Hook. Bot. Mag. 
t. 2894. Hook. Fl. Bor. Am. vol. ii. p. 76. 
Has. Sandy Pine-woods of Spokan River, and sterile banks of streams, 
Upper Columbia region, growing with Clarkia pulchella. June, 
August. 54.441. 
2. Collomia linearis, Nutt.—Hook. Bot. Mag. t. 2893. Fl. Bor Am. 
vol.ii. p. 76. 
Has. Open Pine-woods, banks of streams and waste places, common. 
June, July. z. 660 and 193. 
3. Collomia gracilis, Dougl.—Gilia gracilis, Hook. Fl. Bor. Am.v. 2. p. 16. 
Has. Banks and denuded dry places, Upper Oregon. =n. 371. 
1. Navaretia intertexta, Hook. Fl. Bor. Am. vol. ii. p. 75. 
Has. Stony, clayey,and calcareous places, abundant in dry water-courses 
on the Spokan Plains and in the Missouri territory. August. zs. 544. 
CONVOLVULACEA, Juss. 
1. Evolvulus argenteus, Ph. Fl. Bor. Am. vol. i. p. 187 (not Brown). 
Chois. in De Cand. Prodr. vol. ix. p. 443. 
Has. On the gravelly hills of the middle part of Platte River, growing 
with “ Astragalus hypoglottis,” ** Polygala alba," and ** Mammillaria 
simplex.” Corolla varying from pure white to bluish-lilae. June, 
July. ». 236. 
1. Cuscuta Americana? L.? Hook. Fl. Bor. Am. vol. ii. p. 77? 
Has. Mouth of the Walla-Walla River; on the muddy borders ; infest- 
ing the stems of ** Xanthium microcarpon.” Sept. m. 674. 
= l am unable to determine this species at the present time, my entire 
. collection of Cuscuteæ being in the hands of Dr. Engelmann, who is 
preparing a monograph of that family. 
HyYDROPHYLLEA, Br. 
1. Hydrophyllum capitatum, Doug]. in Herb. Hook.—Fl. Br. Am. v. ii. 
—. p. 78.—H. densiflorum, Nutt. MS. in Herb. Hook.—B8. pumilum, H 
pumilum, Gey. MS., minus, capitulis sessilibus. 
Has. Shady swamps and rocky groves, springs and rivulets in the 
