FLOWERING PLANTS AND FERNS OF ARIZONA 720 



1. HYDROPHYLLUM. Waterleaf 



A perennial pubescent herb; leaves large, mostly basal or nearly so, 

 long-petioled, pinnate or deeply pinnatifid; flowers in dense short 

 terminal clusters; corolla eampanulate, pale blue, the lobes appendaged 

 within; filaments hairy; style 2-cleft. 



1. Hydrophyllum occidentale A. Gray, Amer. Acad. Arts and Sci. 

 Proc. 10: 314. 1875. 

 Oak Creek Canvon, Coconino or Yavapai County (A. Nelson 2112), 

 Mazatzal Mountains, Gila County {Collom 108. Harrison 7829), 5,000 

 to 6,000 feet, along streams in shade, preferring rich soil, May. Utah 

 to Oregon, central Arizona, and California. 

 Western squaw-lettuce. 



2. NEMOPHILA 



Plant annual; stems weak, few-branched, trailing or clambering, 

 retrorsely prickly, usually at least 30 cm. long; leaves runcinate-pin- 

 natifid with retrorse lobes, these and the calyx hispid; flowers axillary 

 and terminal, solitary or in very few-flowered cymes, the corolla pale 

 blue, with scalelike appendages. 



The Arizona species lacks the beauty of the California baby-blue- 

 eyes (N. menziesii Hook, and Am. var. insignis Brand), a popular 

 garden annual with large bright-blue flowers. 



1. Nemophila aurita Lindl. Edwards's Bot. Reg. 19: pi. 1601. 1833. 



Pholistoma aurita Lilja ex Lindstrom, Bot. Notiser 1839: 40. 

 1839. 



Pinal, Maricopa, and Pima Counties, 3,000 feet or lower, common on 

 rocky slopes, February and March. Arizona and California. 



The Arizona form is var. arizonica (M. E. Jones) Brand (A 7 . arizon- 

 ica M. E. Jones). The genus Pholistoma is recognized as distinct from 

 Nemophila by Constance. 1: 



3. ELLISIA 



Small delicate annuals; stems erect or diffuse, rarely more than 25 

 em. long; leaves alternate or opposite, pinnatifid to bipinnate with 

 small segments; inflorescences terminal, racemelike, becoming loose 

 and elongate; flowers very small, the corolla without appendages or 

 these minute. 



The plants appear in early spring, preferring the partial shade of 

 shrubs and disappearing as the soil dries out. The Arizona species 

 belong to a separate genus, Eucrypta, according to Constance. 17 



Key to the species 



1. Upper leaves sessile, the blades mostly simply pinnatifid or pinnate, with 

 obovate or spatulate segments; corolla limb violet or drying that color; 

 inflorescence distinctly glandular-puberulent 1. E. micrantha. 



1. Upper leaves more or less distinctly petioled, the blades (at Least of the Lower 

 leaves) bipinnatifid with oblong or oblong-ovate primary segments; corolla 

 whitish or pale purple; inflorescence not or obscurely glandular-puberulent. 



2. E. TORREYI. 



17 Constance, Lincoln, the genera of the tribe hydrothylleae of the HYDRonrriXACEVE. 

 Madrono 5: 28-33. 1939. 



