76 SPRING FLORA 



HYDROPHYLLACEJE. Waterleaf Family. 



More or less hairy herbs. Leaves usually basal or 

 alternate. Inflorescence in scorpioid cymes, in racemes, 

 spikes or sometimes solitary. Mowers perfect ; regular. 

 Sepals 5, united. Petals 5, united. Stamens 5, inserted 

 on the corolla and alternate with its lobes. Pistil with 

 style 2-cleft or with 2 separate styles; and an entire 

 1-celled or rarely a 2-celled ovary, bearing 2 parietal 

 placentae. Fruit a capsule. 



Leaves all basal and rosette-forming; peduncles 1- 



flowered 1. Hesperochlrou 



Leaves neither all basal nor rosette-forming'; peduncles 



several -flowered. 



Placentae broad; corolla convolute in bud. 

 Perennials; stamens conspicuously ex- 



serted 2. Hydropliyllum 



Annuals; stamens included 3. Nemophila 



Placentae narrow, not fleshy; corolla imbricated in 



, bud , 4. Phacelia 



1. HESPEROCHIRON. (Capnorea). 



Perennials from short branching- rootstalks. Leaves entire; 

 spatulate or oblong, with long, wing-margined petioles. 

 Peduncles naked. Calyx 5- (rarely 6-7-) parted. Corolla with- 

 out disk; bell-shaped or saucer-shaped. Ovary 1-celled, with 

 narrow placentae. Capsule loculicidal. 



1. H. pumilus Porter. (Capnorea pumila (Dougl.) Greene). 

 Leaves glabrous, except for the ciliate margins; lanceolate to 

 spatulate, tapering below to a slender petiole. Calyx-lobes 

 nearly equal. Corolla saucer-shaped; white to purple; inner 

 surface of its tube and the base of the filaments pubescent. 

 In wet places. May. 



2. HYDROPHYL.L.UM. Water-Leaf. 



Herbs with large, alternate and basal petioled leaves (often 

 pinnatifid or pinnate). Inflorescence cymose or capitate. 

 Flowers violet, bluish or white, often on long peduncles. Cor- 

 olla bell-shaped, with a linear longitudinal appendage at each 

 lobe. Stamens conspicuously exserted; filaments bearded at 

 the middle. Style 2-cleft. Ovary 1-celled. Capsule spheroidal. 



Flowers in head-like cymes; peduncles shorter than 



petioles 1. H. capltntum 



Flowers in open cymes; peduncles longer than 



petioles 2. H. occidentale var. 



1. H. capitatum Dougl. Stem rather weak; 6-12 inches high; 

 pubescent or somewhat hispid; from fascicled roots. Leaves 

 ovate in outline, with 2-3 pairs of coarsely-lobed segments. 

 Flowers on short pedicels in dense sessile or short-peduncled 

 head-like cymes. Calyx very hispid-pubescent. Corolla more 

 or less purplish-tinged. Ovary hairy. In shade, often in oak 

 copses; in rich, moist, loose soil. May-June. 5,000-9,000 ft. 



