298 WATERLEAF FAMILY. 



high, 9-21 mostly lanceolate and crowded leaflets, clusters of bright blue 

 flowers collected in a long panicle, and stamens and style longer than the 

 lobes of the corolla, which is 1 ; broad. 



5. COBJBA. (Named for B. Cobo, a Spanish priest in Mexico, from 

 which country the common species was introduced into cultivation.) 11 



C. scdndens, Cav. Smooth, tall-climbing by its much-branching ten- 

 drils ; leaflets ovate ; dull purple or greenish corolla 2' or more long, long 

 filaments coiling spirally when old ; flowers all summer ; usually cult, as 

 an annual. 



LXXVII. HYDROPHYLLACEJJ, WATERLEAF FAMILY. 



Plants resembling the foregoing family, in the arrangement 

 of the flowers more commonly imitating the Borage Family ; 

 differing from both in the 1-celled ovary and pod with 2 parietal 

 placentse. In some, the placentae unite in the axis, making 

 a 2-celled ovary. Style 2-cleft or else 2 separate styles. 

 Ovules at least 2 to each placenta. Seeds with a small em- 

 bryo in hard albumen. Juice inert and watery. Leaves 

 mostly alternate, simple or compound. 



* Style 2-cleft ; ovary and pod \-celled, with two parietal placentas. 



t- Placenta fleshy and so broad that they line the ovary, and inclose the (mostly 4) 

 ovules and seeds ; corolla usually convolute in the bud, commonly with o or 10 

 folds, scales, or other appendages down the inside of the tube. 



1. HYDROPH YLLUM. Calyx 5-parted, sometimes with small appendages at the sinuses, 



not enlarged in fruit. Corolla bell-shaped. Style and mostly hairy filaments pro- 

 truded ; anthers linear. Pod small, globose, ripening \-k spherical seeds. Flowers 

 in crowded cymes or clusters. Leaves alternate, slender-petioled. 



2. NEMOPHILA. Calyx 5-parted, and with a reflexed appendage in each sinus, somewhat 



enlarging in fruit. Corolla open bell-shaped or wheel-shaped, onger than the stamens. 

 Flowers solitary and long-peduncled. Leaves mostly oppo.-ite, at least the lower 

 ones. 



8. ELLISIA. Calyx 5-parted, with no appendages. Corolla cylino Meal or bell-shaped, not 

 exceeding the calyx, the tube with 5 minute appendages witLin. Stamens included. 

 Lower leaves opposite. 



+- +- Placentas narrow, adherent directly to the walls, or else bot ne on an incomplete 

 partition and projecting into the cell, where they sometimes meet ; lobes of the 

 corolla imbricated in the bud. 



4. PHACELIA. Calyx 5-parted, the divisions narrow; no appendages at the sinuses. 



Corolla open bell-shaped, approaching wheel-shaped, or in "Whitlavia tubular-bell- 

 shaped or slightly contracted at the throat, and the 5 short and broad lobes abruptly 

 and widely spreading. Stamens and style often protruded. Pod 4-many-seeded. 

 Leaves alternate. Flowers in one-sided raceme-like clusters or spikes. 



* * Styles 2 (rarely 3), separate quite to the base; ovary and pod 2-celled; seeds minute 

 and very numerous. 



5. HYDROLEA. Calyx 5-parted. Corolla open -bell-shaped or approaching wheel-shaped, 



rather shorter than the stamens ; filaments enlarged at base. Capsule bursting irreg- 

 ularly, or 2-4-valved. Herbs, or somewhat shrubby, with entire leaves and often 

 spines in their axils. Flowers in loose axillary clusters. 



