258 WATKRI.KAF FAMILY. 



* * Spikes collected in terminal and srr<-n?l times forked cymes : woody-stemmeA 



or shrulily house ami ln-ililin<) plants from Peru and C/ii/i. 2/ 



H. Peruvianum, S \VKKT HELIOTROPE. Pubescent, with ovate-oblong 

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

 flowers. 



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

 deeper-blue llowers of much less fragrance. 



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

 indicating the resemblance to Heliotrope.) 



II. Indicum, INDIAN HKLIOTKOPK : hairy low plant, nnt. from India a* a 

 weed in wa-tc ground S. ; with ovate heart-shaped leaves, and solitarv spikes of 

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

 2-lobed fruit. 



81. HYDROPHYLLACE.SJ, 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 \-celled, with two parietal placenta, 



* These flesh ;/ and so brand that they line the or try, and enclose, the (mostly 4) ontlei 



and seeds: corolla usually convolute in the bud, commonly with 5 or 10 folds, 

 scales, or other appendages down the inside of (he tube. 



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



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



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

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

 slender-petioled. 



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



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

 lunger than the stamens. Flowers solitary and long-pednncled. Leaves 

 mostly opposite, at least the lower ones. 



Placenta narrow, adherent ilirecthj to the n-nlh. or else home on nn incomplete 

 partition and projecting into the <<//, n-hfre they sometimes meet: lubes of the 

 corolla imbricate d in the find. 



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



sinuses. Corolla open bell-diaped, 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 throat, 



the 6 short and broad lobes abruptly and widely spreading. (I'od many- 

 seeded.) Otherwise as the last section "f Phacelia. 



2. Styles 2 (run!;/ M ), si>f>arnte. t/tiite to (he base: ovary mid /><! '2-felf/d: tends 



minute and ren/ numerous. 



6. HYDROLEA. Calyx "i-parted. Corolla open-bell-shaped or auproadiing wheel- 

 shaperl, rather shorter than the stamens: filaments enlarged at ha*e. Herbs. 

 or sciinewliat shrubby, with entire leaves and often spines in their axil* 

 Flowers in loose axillary clusters. 



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

 or stinging bristles, is of late planted out as an ornamental leaf-plant, but ie 

 as yet uncommon. 



