HELIOTROPICEE. 229 



1 M ViRcrxTixi. S/^m branching, hairy. /.«ii>«a oblon^-lanceoIate, acu- 

 minate, acabr us above. Flowers in divaricate, dichotonious racemes. NuU 

 covered with ho«»ked prickles. 



Blue. cT June — July. Upper dist. Car. &, Ga. 1-2 feel. 



Order XCII. HELIOTROPICE.E. 



Calyx 1-parted, persistent. Corona hypogynous 5-parted, 

 Stamens 5. altcrn ite with the segments ot' the corolla. Oca- 

 ry entire, 4-cclled, with a pendulous ovule in each cell. Style 

 simple. Fr///7 drupaceous, easily s-^[)aral)le into 4 pieces. — 

 Seed solitary. Herbneeous plants with alternate simple leaves. 

 F/owtrs in axillary or terminal spikes. 



Gen-ts 1. HELIOTROPIUM. 



Grenus same as the Order. 



1 H IvnicTM. Stem erect, '.iispid, furrowed. Leaves alternate, cordate, 

 ovate, scabrous, acute, niaririns irreg'ilar. /^/oirers in axillary spikes. Calyx 

 5-parted, hirsute shorter than the corolla. Fruit angular, separating. 



Blue. O June— Aug. Middle and Southern Car. &, Ga. 8-12 feet. 



2 H CuBASSAvicr.tt. .S!f«n erect, or decumbent, simple, or brancticd, suc- 

 culent, fflaiicous. Leaves narrow, lanfeolate, glabrous, succulent. FUnoers 

 in terminal spikes C<//yj succulent, as long as the tube of the corolla. Co- 

 rolla salver form, furrowed. Fruit angled on the inside, coated with a fleshy 

 pulp. 



White tinged with yellow. O May — July. On the sea coast. 6-12 in. 



Order XCIII. HYDROPIIYLLE.E. 



Calyx .'>-10-cleft, persistent. Corolla hypogynous, 5-lobed, 

 with two lamellosat the base of each lobe. Stamens 5. alter- 

 nate with the segments of the corolla. Ovary simple, 1-cel- 

 led. Orw/c suspended. Style I, b\{\\. P/acen/ce 2-parietal. 

 Fruit capsular, enclosed in the permanent caly.x. Few, or 

 many seeded. Herbaceous plants, hispid. 



Gdtbs I HYDROPIIYLLUM. 



Calyx .^.parted. Coro//a cam|)anulate, 5.cleft, with 5 lon- 

 gitudinal nectariterous jjrooves on the inside. Stamens 6- 

 exscrted. Filaments bearded. Capsule globose, 1-celled, 2- 

 valvcd, usually 1 -seeded. 



1 H ViRGi.xicof. Stem erect, nearly glabrous, /.eaves pinnate, and pin- 

 naufid ; segments oval-lanceolate, serrate. Flowej-s in compact axillary 

 clusters; segments of the calyx linear. 



Blue. % May — June. In shady, rocky situationa 1-2 ft. 



GE.VUS II PHACELIA. 



Calyx 5-clcft. Corolla S-cleft, sub-campanulate, with 5 

 PART n. 18 



