202 HYDROPHYLLACEAE. 



the upper broader, all entire, 2-6 cm. long; flowers crowded in a terminal head- 

 like cluster; calyx obconical, the lobes broad, obtuse, shorter than the tube, 

 corolla salmon-color, narrowly funnelfprm, 15-25 mm. long; stamens unequally 

 inserted; ovules and seeds solitary in the cells, the seed-coats developing 

 spiricles when wetted. In stony soil; rare in our limits. 



Collomia grandiflora diffusa (Mulford) Pipen Usually taller, 40-60 cm. 

 high, the flowers in several to many racemosely arranged smaller heads. Very 

 common in stony soil. 



Collomia linearis Nutt. Annual, erect, simple or branched above, 10-30 

 cm. high, pubescent throughout or glabrous below, glandular above; leaves 

 sessile, alternate, linear or lanceolate, acute, entire, 2-6 cm. long; flowers 

 crowded in head-like clusters; calyx-lobes triangular, acute, as long as the 

 obconic tube; corolla pink, 8-10 mm. long, slender-tubular, the lobes small; 

 stamens unequally inserted; ovules and seeds solitary in each cell; seed-coats 

 with spiricles. Low ground, quite common. 



Family 77. HYDROPHYLLACEAE. WATERLEAF FAMILY. 



Herbs, commonly hairy; leaves mostly alternate; flowers per- 

 fect, regular, on naked 1 -flowered scapes or in dense one-sided 

 cymes or false racemes; calyx 5-parted or of 5 sepals; corolla 

 gamopetalous, deeply 5-lobed ; stamens on the corolla-tube, alter- 

 nate with its lobes; style 2-cleft, or styles 2 and separate; ovary 

 entire, 1 -celled, with 2 pariental placentae or 2-qelled by the 

 union of the placentae; fruit a 2-valved, 4-many-seeded capsule; 

 endosperm copious. 



Leaves all basal. 296. CAPNOREA, 202. 

 Leaves not all basal. 



Placentae narrow. 297. PHACELIA, 203. 

 Placentae broad and fleshy. 



Perennials; stamens exserted. 298. HYDROPHYLLUM, 204. 



Annuals; stamens included. 299. NEMOPHILA, 204. 



296. CAPNOREA. 



Stemless perennials; leaves spatulate or oblong, entire, with 

 margined petioles; flowers purplish or white, on naked 1-flowered 

 scapes ; calyx 5-parted, rarely 6- or 7 -parted, the lanceolate or linear 

 lobes sometimes unequal; corolla campanulate or rotate, 5-cleft, 

 rarely 6- or 7-clef t ; stamens on the base of the corolla-tube, un- 

 equal, included; ovary partly 1-celled, tapering into a short style, 

 barely 2-cleft at the tip; ovules numerous on dilated placentae. 



Corolla campanulate. C. 

 Corolla saucer-shaped. 



Leaves pubescent beneath. C. 



Leaves glabrous except on the margins. C. pumila. 



