406 HYDROPHYLLACEAE (WATBRLEAF FAMILY) 



or more or less completely united even to the stigmas. Fruit a 1-celled cap- 

 sule or partly or quite 2-celled by the intrusion of tiie placentae or their union 

 in the axis; valves 2, rarely 4. Seed-coat pitted, the cavities regular and 

 honeycomb-like. ■ ' ^ . 



Leaves all basal; peduncles l-flowered 1. Capnorea. i 



Leaves not all basal. 

 C6rblla convolute in bud; placentae broad. 



Perennials; stamens exserted . , . , , .2, HydrophylliutI, 



Annuals; stamens included. . ;, 



Calyx enlarged in fruit, naked at the sinuses . . . • ^. . Macrocalyx. 

 Calyx not much enlarged in fruit, with a reflexed appendage at 



each sinus ' 4. NemophiU; il- 



Corolla imbricated in bud; placentae narrow. ,<>;m, 



Flowers in a scorpioid cyme. 



Corolla deciduous, not yellow 5. Phacelia. 



Corolla persistent, yellow or yellowish 6. Emmeoanthe. 



Flowers solitary in the leafy forks of the stem , . . .7. Nama. 



1. CAPNOREA Raf. 



Low stemless perennials, with entire spatulate or oblong leaves on elongateij 

 petioles crowning the caudex, and from their axils sending up l-flowered pe^ 

 iluncles. Calyx 5-parted, rarely, 6 or 7-parted; the lobes linear-lanceolate, 

 occasionally unequal. Corolla campanulate or rotate, the stamens inserted 

 on the base of its tube. Style 2-cleft at the apex. Capsule loculicidal.',, 



1. Capnorea pmnila Greene, Erythea 2; 193. 1894. Leaves several from 

 the; crown of a short, usually , branching rootstock, lanceolate to spatuMeJ 

 lapering below to a slender ; petiole, minutely' ciliate, otherwise glabrous; 

 psdunoles slender, 3-7 cm. long, about equaling the leaves, glabrous: sepate 

 lanceolate, about 12 mm. long, minutely ciliate: corolla white to purple, tch 

 tate, often 2 cm. broad; the broad ovate lobes longer than the tube; the tube 

 'vithin and base of the filaments pubescent. — In- wet plaices; Wyoming to 

 i.;alif ornia and Washington. • 



2. HYDROPHYLLUM L. Watbrleap 



I 



Perennial herbs with horizontal rootstpcks. Leaves alternate or mainly 

 radical, pinnate or pinnately parted, long-petioled. Flowers in capitate cymes. 

 Corolla campanulate, S-lobed, the tube with a nectar-bearing .grooyed, appends 

 age opposite each lobe. Stamens exserted, the filaments hairy at the middle, 

 Style fuiform, exserted; ovary hispid. Capsule 2-valved, 1-4-seeded. , ; ,| 



Flowers crowded-capitate; peduncle shorter than the petiole . . . 1. H. capitatum. 

 Flowers loosely-capitate; peduncle longer than the petiole . .. , 2. H. Fendleri. 



1. Hydrophyllum capitatum Dougl. Benth. in Linn. Trans. 17: 273. 1836. 

 Retrorsely hispid with minute white hairs;' stems often tufted,' 1-2 dm. high, 

 from a small fascicle of thickened perennial roots, l-severaHeaved,' erect in 

 flower, recurving and often prostrate in fruit: leaves pinnately 5-7-parted'or 

 at base divided; the lanceolate division^ entire or often 2-3-lobed, mucroilkt^' 

 tipped: flowers in a dense capitate bluster: calyx very hispid, parted nearly' 

 to the base: corolla blue, but little longer than the calyx: filaments twice! as 

 long as the corolla: style equaling the stamens, 2-lobed.-— Colorado to Montana 

 and far westward. 



2. Hydrophyllum Fendleri (Gray) Heller> Cat. N. A. PI, 40. 1898. Pubes- 

 cent, hirsute, br sparingly hispid, 2-4 dm. high: leaves elongated-oblong, 

 pinnately parted or divided into 7-15 divisions;, divisions inclined- to ovate- 

 lanceolate, acute or acuminate, incisely serrate :.cyme rather open : corolla, ^hite 

 or nearly so: calyx deeply parted, the lobes lanceolate. H. occidental Fendleri. 

 — Wet copses and bottom lands; New Mexico to Montana and westward. ' 



