502 HYDPvOPHYLLACE.E. Hydrophyllum. 



* * Leaves all or all but the lower alternate : flowers in cymes, scorpioid spikes, or racemes, or 

 rarely ia the forks of the stem. 



-I- Style from 2-cleft at the apex to 2-parted, 



5. Phacelia. Calyx of 5 similar or slightly dissimilar mostly narrow divisions. Corolla de- 



ciduous, not yellow. Stamens e(|ually inserted low down. Flowers clustered, spiked, or 

 racemed. 



6. Emmenanthe. Corolla yellow or cream-color and scarious-persistent. Otherwise as the 



preceding genus. 



7. Conanthus. Caljrx of very narrow and similar divisions. Corolla deciduous, tuhular-funnel- 



iorm : the unequal stamens unequally inserted on its tube. Flowers solitary in the leafy 

 Ibiks and terminal. 



8. Tricardia. Calyx of 3 outer much enlarging cordate sepals and 2 inner linear ones. 



+- +- Style and even stigma entu'e. 



9. Romanzoffia. Calyx of similar divisions. Corolla destitute of appendages. Leaves round- 



reniform and crenate-lobed. Flowers racemed. 



* * * Leaves (alternate) all radical : peduncles in their axils 1 -flowered : style 2-cleft at apex. 



10. Hesperochiron. Corolla campanulate or nearly rotate, deciduous. 



Tkibe III. NAME^. Ovary (more or less completely 2-celled), capsule, dehiscence, &c., 

 nearly of Fhacdicce. Styles 2, distinct to the base, their tips thickened or stigmas capi- 

 tate. Herbs or shrabs. 



11. Nama. Corolla funnelform. Capsule membranaceous, 2-valved ; valves luidivided. Low 



iierlis or sufi'rutescent : leaves entire. 



12. Eriodictyon. Corolla funnelform or almost campanulate. Capsule crustaccous, splitting 



into 4 equal half- valves. Shrubs : leaves toothed. 



1. HYDROPHYLLUM, Toum. Waterleaf. 

 Calyx 5-parted into narrow divisions, nearly unchanged after flowering ; the 

 sinuses in our species entirely without apjiendages. Corolla campanulate, 5-lohed ; 

 the lobes oval, convolute in the bud, in the tube a nectariferous grooved appendage 

 opposite each lobe. Filaments and style filiform and exserted beyond the lobes of 

 the corolla : the former bearded with some long hairs near the middle : anthers 

 linear or oblong, infiexed in the bud. Ovary hispid with stiff straight hairs, 4- 

 ovuled. Capsule tardily 2-valved, 1 - 4-seeded. — Perennials (an annual species 

 in the Atlantic States) ; Avith erect and sparingly branching stems from clustered 

 horizontal rootstocks, mostly pinnately parted long-petioled leaves, and white or 

 violet flowers in close or capitate pedunculate cymes. 



A wholly North American genus, of six species, growing mostly in wooded or shaded places ; two 

 of them peculiar to the Rocky Mountain and Pacitic regions and found in California ; a third, viz. 



H. ViiioiNicuM, Linn., is common to the Atlantic States and Oregon, and may be looked for 

 on our northern l)orders. This may readily be known by being comparatively smooth, and with 

 only 3 to 5 divisions to the cauline leaves, which are of ovate general outline. 



1 . H. capitatum, Dougl. Only a span or so high, in tufts, with rather small 

 rootstocks and coarse fleshy-fibrous roots : leaves soft-hirsute or pubescent, and with 

 blade shorter than the petiole, ovate or roundish in general outline, 2 or 3 inches 

 long, pinnately parted or at base divided into 5 or 7 crowded 2 - 3-lobed leaflets or 

 divisions ; the lobes oblong, obtuse, mucronate : flowers in a close capitate cluster 

 on a very short peduncle : calyx very hispid : corolla bluish or violet : anthers ob- 

 long. — Benth. in Linn. Trans, xviii. 273. — In California we have only 



Var, alpinum, Watson. Almost stemless, the comparatively open cymes and the 

 petioles of the leaves rising directly out of the ground ; the calyx more white-hairy 

 and less hispid. — Bot. King Exp. 249. 



Sien-a Nevada (Plumas Co., Mrs. Puhifer Ames) to Humboldt Mts., Nevada, Watson, &c. The 

 ordinary form of the species from Utah to Washington Territoiy." 



