170 THE FLORA. 



10 V. cuculla'ta. Hood-leaved V. Leaves reniform-cordtite. base lobes involute, com. 



11 V. villo'sa. Woolly V. Leaves round-ovate, cordate, obtuse, flat, downy. M. 8. 



12 V. sagitta'ta. Ai'row-lvd. V. Lvs. lance-oblong, some sagittate or cut-toothed at base. 



13 V. hasta'ta. JIalherd-leaved V. Smooth. Lv.i. hastate. Stip. ovate, minute. S. 



14 V. tripar'tita. Three-cleft V. Hairy. Lvs. deeply S-parted. Stip. lanceolate. S. 



15 V. pubes'cens. Downy V. Downy. Lvs. broad-cordate. Stip. ovate, large, c. 

 16 V. Canaden^sis, Canada V. Plant If. high. Leaves cordate, pointed, smooth. 



17 V. stria'ta. Cream-colored V. Spur ^ the length of the corolla. Stip, large, oblong 



18 V. Muhlenber'gii. Muhlenberg^ sV. Spur i the length of corolla. Stip. lanceolate. 



19 V. rostra 'ta. Long-spurred V. Spur longer than corolla. Stipules lanceolate. 



20 V. tric'olor. Pansy. HearUease. Stipules as large as the le&ves. Fls. three-colored. 



21 V. grandiflo'ra. Great-JloweredV. Stip. much smaller than the leaves. Purple, •f 

 22 V. odora'ta. Sweet English V. Stolons creeping. Lvs. cordate. Fragrant. \ 



Order XVIL CISTACEiE. Rock Roses. 



Herhs or low shrubs; leaves simple, entire, mostly alternate ; 

 flowers perfect, regular, liypogynous, lasting but a day ; 

 sepals 5, unequal, the 3 inner contorted, all persistent ; 

 petals 5, rarely 3, or 0, twisted contrary to the sepals ; 

 ovaries 3, united, forming a 1-celled, 3-valved capsule ; 

 seeds many, on the parietal placentae. (See the Glossary.) 



* Petals 5, yellow, larger than the sepals. Low shrublets. Hudsonia. i 



* Petals 3, narrow, brown -pnrple, as short as the sepals. Lechea. 2 



* Petals 5, yellow, large and showy, sometimes 0. Helianthemum. 3 



1. HUDSO'NIA. Hudsonia. 



Little heath-like, very leafy and branching shrublets, growing in sands. 



1 H. tomento'sa. Hoary-tomentons ; leaves oval, appressed ; flowers subsessile. 



2 H. ericoi'des. Downy; leaves subulate, loose; flowers pedicelled. 



2. LECH'EA. Pinweed. 

 Perennial herbs, often woody at base, much branched, bearing the small 

 obscure flowers in axillary clusters. Pods as large as a pin's head, their 3 

 partial cells each 1-2-seeded. Summer. 



§ Pedicels longer than the oval pod Nos. 1, 2. 



§ Pedicels shorter than the globular pod . . .Nos. 3, 4. 



1 L. minor. Lesser P. Leaves linear; 2 outer sepals minute. 5'-15' high. 



2 L. Novae-Caesare'ae. Neiv Jersey P. Leaves elliptical ; 2 outer sepals slender, often 



longer than the others. About If. N. Y and N. J. 



