258 WATERLEAF FAMILY. 



# * Spikes cnl'sctcd In terminal and several times forked n/mes : woody-stemm d 



or shrubby house and bedding plants from Peru and Chili. 2/ 

 II. Pemvi&num, SWEET HELIOTROPE. Pubescent, with ovate-oblong 



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



floAvers. 



II. corymbosum. Cult, with the other, differs mainly in the larger and 



deeper-blue flowers of much less fragrance. 



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



indicating the resemblance to Heliotrope.) 



H. Indicum, INDIAN HKLIOTKOPI; : 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. HYDROPHYLLACEJE, 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 l-cell'-d ovary and pod with 

 2 parietal placenta. 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 l-cellcd, with two parietal placenta, 



# These fleshy find .so bro id (hat (hry Him tlte omn/, and enclose, the (mostly 4) oitiles 



ami sct-f/s : corolla usually conn>lntc in thi> btuf, commonly with 5 or 10 folds, 

 settles, or other appendage* down (lie inside of the tube. 



1. HYDROPIIYLLTM. Calyx 5-parted, sometimes with small appendages at the 



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

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

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

 slender-pet ioled. 



2. NKMOIMIILA. Calyx 5-parted, and with a refiexed 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. 



# * Phcentce narrow, adherent directly to the walls, or else borne on an incomplete 



p trtition ana i>rojvclin(j into the cell, where they sometimes meet: lobes if the 

 corulld imbricated in (he bud. 



3. PHACELIA. Calyx 5-parted, the divisions narrow : no appendages at the 



sinuses. Corolla open bell-shaped, approaching wheel-shaped. Stamens and 

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

 one-sided raceme-like clustei's or spikes. 



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



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

 seeded.) Otherwise as the last section of Phacelia. 



2. Styles 2 (rarely 8), 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 approach ing wheel- 



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

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

 Flowers in loose axilfary clusters. 



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

 or stinging bristles, is of late planted out as an ornamental loaf-plaut, but ia 

 as yet uncommon. 



