HYDUOPHYLLACE.E. (WATERLEAF FAMILY.) 255 



rhomboid-ovate, acuminate or acute, coarsely incised-toothed ; the lowest 

 commonly 2-cleft and the terminal one often 3-lobed : peduncle usually once 

 or twice forked : cyme at length open : calyx 5-parted to the very base into 

 narrow linear and spreading hispid-ciliate divisions : corolla nearly white or 

 sometimes deep violet, about J inch long. — Across the continent. 



2c ELLISIA, L. 



Plants with tender somewhat hirsute herbage : peduncles solitary or race- 

 mose : corolla whitish, mostly small in comparison with the stellate calyx. 

 In oars the leaves are once pinnately parted, and the upper mostly alternate. 



1. E. Nyctelea, L. A span to a foot high, at length very diffuse: 

 leaves on naked or barely margined petioles; the divisions 7 to 13, lanceolate, 

 acute, mostly 1 to 3-toothed or lobed : peduncles solitary in the forks or oppo- 

 site the leaves, or some of the later ones racemose and secund : calyx-lobes 

 acuminate, longer than the capsule : corolla rather shorter than the calyx. — 

 Upper Arkansas, Colorado, to the Saskatchewan, and eastward across the 

 continent. 



3. PHACELIA, Juss. 



Corolla blue, purple, or white, never yellow, except the tube of certain 

 species ; the tube with or without internal folds : calyx-lobes more or less 

 enlarging in fruit : 'seed coat reticulated or pitted. 



§ 1. A pair of ovules to each placenta: seeds as many or by abortion fewer: 

 lobes of the campanulate corolla entire (or rarely erose-dentate) ; the tube with 

 10 laminate appendages in pairs at the base of the stamens. — Euphacelia. 

 * Leaves all simple and entire, or some of the lower pinnately 3 to 5-parted or 

 divided: capsule ovate, acute: seeds densely alveolate-punctate. 



1. P. Circinata, Jacq. f. Hispid and the foliage strigose, and either 

 green or canescent, a span to 2 feet high : leaves from lanceolate to ovate, 

 acute ; the lower tapering into a petiole and commonly some of them with 

 one or two pairs of smaller lateral leaflets : inflorescence hispid ; the dense 

 spikes thyrsoid-congested : corolla whitish or bluish : filaments much ex- 

 serted, sparingly bearded. — On dry ground, from New Mexico and Cali- 

 fornia to the Dakotas and British Columbia. 



* * Leaves pinnately toothed, lobed, or compound, and the lobes or divisions 

 toothed or incised: capsule globular or ovoid, obtuse: seeds with excavated 

 ventral face divided by a salient ridqe. 



-t- Calyx, etc. not setose-hispid. 



2. P. integrifolia, Torr. A span to 2 feet high, strict, viscid-pubescent 

 or hirsute, very leafy : leaves ovate-oblong or lanceolate, sessile or the lower 

 short-petioled with a commonly subcordate base, simply or mostly donbhj ere- 

 nate-toothed , sometimes incised : spikes crowded, at first thyreoid : corolla whitish 

 or bluish : stamens and style long exserted. — Ann. Lye. N. Y. ii. 222. Dry 

 soil, Colorado to Texas, Arizona, and Utah. 



