258 WATERLEAF EAMILT. 



* * Spikes collected in terminal and several times forked cym^y woody-stemmed 



or shrubby house and bedding ulantsfrom Peru and thtli. 2J. 

 H Peruviinum, Sweet Heliotrope. Pubescent, with ovate-oblong 

 or lance-ovate very veiny rugose leaves, and vanilla-scented pale blue-purple 



°H.'^eoryinbbSUin. Cult, with the other, differs mainly in the larger and. 

 deeper-blue flowers of much less fragrance. 



13. HELIOPHYTXJM. (Name of the Greek words for sun and plant, 



indicating the resemblance to Heliotrope.) 



H. Indicum, Indian Heliotrope : hairy low plant, nat. from India as a 

 weed in waste ground S. ; with ovate heart-shaped leaves, and solitary spikes of 

 small purplish flowers, in summer ; a cavity before each seed-bearing cell of the 

 2-lobed fruit. ® 



81. HYDROPHYLLACEiE, WATERLEAF FAMILY. 



Plants in some sort resembling both the foregoing and the following 

 families, in the arrangement of the flowers more commonly imitating 

 the former ; differing from both in the 1-celled ovary and pod with 

 2 parietal placentae. In some the placentae unite in the axis, making 

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

 at least 2 to each placenta. Seeds with a small embryo in hard 

 albumen. Juice inert and watery. Leaves mostly alternate, simple 

 or compound. The following are all N. American plants, some 

 wild, the others cult, for ornament from the "West. 



§ 1. Style 2-cleft: ovary and pod 1-ceUed, with two parietal jilacentcB, 



» These fleshy and so broad that they line the ovary, and enclose the {mostly 4) omdet 

 arid seeds : corolla usually convolute in the bud, commonly wiiti 5 or 10 folds, 

 scales, or other appendages doum the inside of the ttiie. 



1. HYDROPHYLLUM. Calvx 5-parted, sometimes with small appendages at the 



sinuses, not enlarged in fruit. Corolla bell-shaped. Style and mostly haiiy 

 filaments protruded : anthers linear. Pod small, globose, ripening 1-4 

 spherical seeds. Flowers in crowded cymes or clusters. Leaves alternate, 

 sfender-jetioled. 



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



somewhat enlarging in fruit. Corolla open bell-shaped or wheel-shaped, 

 longer than the stamens. Flowers solitary and long-peduncled. Leaves 

 mostly opposite, at least the lower ones. 

 • « Placenta narrow, adherent directly to the walls, or else borne on an incomplete 

 partition and projecting into the cell, where they sometimes meet : lobes <^ the 

 corolla imbricated in the bud. 

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

 sfamses. Corolla open bell-shaped, approaching^ wheel-shaped. Stamens and 

 style often protruded. Pod 4 - many-seeded. Leaves alternate. Flowers in 

 one-sided raceme-like clusters or spikes. 

 4. WHITLAVIA. Corolla tubular-bell-shaped or slightly contracted at the tliroat, 

 the 5 short and broad lobes abruptly and widely spreading. (Pod many- 

 seeded.) Otherwise as the last section of Phacelia. 



§ a. Styles 2 {rarely 3), separate quite to the base: ovary and pod 2-celled: seeds 



minute and very numerous. 

 6. HYDROLE A. Calyx 6-parted. Corolla open-bell-shaped or approaching wheel- 

 shaped, r.ather shorter than the stamens : filaments enlarged at base. Herbs, 

 or somewhat shrubby, with entire leaves and often spines in their axils. 

 Flowers in loose axillary clusters. 

 WIGANDIA, trora South America, with very large rounded leaves and sharp 

 or stinging bristles, is of late planted out as ah ornamental leaf-plant, but ia 

 as yet uncommon. 



