PHACELIA FAMILY 197 



14. G. dichotoma Benth. Evening Snow. Stems branching, 

 6 to 18 in. high, glabrous, some flowers nearly sessile in the 

 upper axils, some long-pediceled, all leafy-bracted. Leaves 

 entire or parted into thread-like lobes, J^ to 1 in. long. Cor- 

 olla about 1 in. long, white, the large rounded lobes often 

 brownish near margin and as long as the tube. (Linanthus 

 dichotomus Benth.) — A foothill species found as far up as 

 Wawona. 



15. G. nuttallii Gray. Stems numerous, 6 to 12 in. high, 

 from a woody perennial base, leafy up through the flower- 

 clusters. Leaves opposite, y A \o \ in. long, parted to the base 

 into 3 to 7 linear lobes. Corolla about J4 in. long, white, the 

 stamens scarcely exceeding its throat. — Whole length of the 

 Sierra Nevada but not yet found in the Yosemite National 

 Park. 



4. NAVARRETIA. 



1. N. divaricata Greene. A slender rigid branching annual, 

 5 in. or less high and about as broad. Leaves few, 1 in. or 

 less long, mostly entire. Flowers in small heads, surrounded 

 by rigid spiny bracts. Corolla minute, shorter than the calyx, 

 purplish, longer than the stamens and style. (Gilia divaricata 

 Torr.)— Widely distributed up to 8200 ft. alt. 



Other Navarretias may be expected in clay soil at low 

 altitudes, especially A r . intertexta Hook., known by its pin- 

 nately parted leaves with spine-like lobes, and its pearly-white 

 flowers in dense heads surrounded by woolly, spiny-lobed 

 bracts. N. leucocephala Benth., is similar but with soft, green 

 leaves and yellowish flowers. 



HYDROPHYLLACEAE. Phacelia Family. 

 Herbs and shrubs with regular flowers. Stamens 5, inserted 

 near base of corolla, alternate with its 5 lobes. Styles 1 or 2. 

 Fruit a 1 or nearly 2-celled capsule with several to numerous 

 seeds. 



Style 2-cleft at apex; herbs, some slightly woody at base. 

 Leaves (including petiole) 6 to 12 in. long; flower- 

 clusters head-like, not coiled I. Hydrophyllum. 



Leaves smaller. 



Flowers solitary or clustered on leaf-bearing stems. 

 Calyx with 5 reflexed tooth-like appendages from 



between the lobes; ovary and capsule 1-celled. 2. Nemophila. 

 Calyx without appendages; ovary and capsule 

 apparently 2-celled. 

 Leaves all opposite and J4 to 1 in. wide; per- 

 ennial 3. Draperia. 



