222 Plants collected during a journey 



HYDROPHYLLE^. 



280. Phacelia bipinnatifida, Michx. fl. i. p. 134. 

 Purshjl. i. p. 40. Borders of swamps, on the Missouri. 



281. P. integrifolia, erecta, pubescens ; foliis petiola- 

 tis, ovatis, crenato-serratis ; racemis pluribus densifloris. 

 Tab. III. 



Desc. Stem erect, branched, pubescent, terete. Leaves alternate, an 

 inch or more in length, all of them petiolate, ovate, rather obtuse, covered 

 with a brownish pubescence ; margin crenately dentate or serrate, some- 

 times doubly serrate ; petioles 2-5 lines long, a little dilated at the base, 

 without stipules. Racemes 3-4, terminal, diverging, secund, 2-3 inches 

 long, when young recurved. Flowers very numerous, on short pedicels, 

 without bracts at the base. Calyx subcampanulate, deeply 5-parted, hairy ; 

 the divisions nearly equal, oblong, acute. Corolla subcampanulate, longer 

 than the calyx ; border divided into 5 oblong obtuse lobes. Stamens 5, 

 exserted ; filaments slender, smooth ; anthers oblong. Germen subglobose, 

 pubescent ; style longer than the stamens, capillary, bipartite, smooth, per- 

 sistent ; stigma simple. Capsule covered by the persistent calyx, sub- 

 globose, slightly hairy, 2-valved, imperfectly 2-celled ; valves septiferous 

 in the middle. Seeds 2 in each cell, convex externally, "divided on the 

 inside by an elevated ridge. 



Hab. Banks of the Platte. 



Obs. This is a remarkable species, differing from all those 

 hitherto described, in its undivided leaves. It however ap- 

 pears to be a genuine Phacelia, as that genus is now charac- 

 terised by R. Brown. This distinguished botanist has estab- 

 lished a new genus* in this natural order, differing from 

 Phacelia in its many-seeded capsule. He refers to it P. par- 

 viflora and Hydrophyllum lineare of Pursh. 



282. Ellisia ambigua, Nutt. gen. i. p. 118. About 

 the lead mines of Missouri. 



283. E. Nyctelea, L. Nutt. 1. c. On the Missouri. 



* Eutoca. R. Br. in Richardson's app. to Frank. Nar. ed. 2, p. 51. 

 t. 27. 



