480 250. Valerianella. 41. VALERIANE^. Pl.ex.cal 



2. Valerianella dentata. Toothed corn-salad. 



Leaves lanceolate, edge not cut; calyx 3-toothed, un- 

 equal, persisting; /razY ovate, pointed, 1-seeded. 



Valerianella dentata, Willd. S. P. 183. 

 Fedia dentata, Willd. S. P. 182. 



Fields and corn-fields ; annual ; April. 

 Stem repeatedly forked ; jioivers solitary, axillary ; calyx- 

 teeth 2 very short, 1 long; fndt ovate, gibbous. 



jS, serratifoUa. Leaves toothed above. 



Fam.VII. 42. RUBIACE^. Jussieu. 



Calyx adherent to the ovary, 4 or 5-lobed ; corolla on 

 the ovary, tubular; limb 4 or 5-cut, regular; stamens 4 

 or 5, inserted into the corolla, alternating with the lobes ; 

 ovary 2-celled ; style 1 ; stigmata 2, crowned by a nectary 

 of 2 semicircular glands ; dieresile 2-coccous, 2-seeded ; 

 cocci not dehiscent; placentarium central; seeds 'peltate; 

 corculum straight; perisperm horny; radicle above ; coty- 

 ledons leaflike. — Stem herbaceous ; root reddish ; leaves not 

 cut, in whirls ; flowers terminal, corymbose ; cor-olla white, 

 yellow or red. 



Fn«V dry, crowned ; cor. funnelshape Shekardia. 251. 

 Fruit dry, not crowned ; cor. funnelshape Asperula. 252. 

 Fruit dry, not crowned ; cor. rotate, or 



bellshape Galium. 253. 



Fruit berrylike ; cor. bellshape Rubia. 254. 



I. 251. SHERARDIA. Dillemus. Sherard. 



Calyx 2 lobed; lobes 2 or 3-toothed, persisting; corolla 

 funnelshape, tube long, limb 4-cut ; fniit dry, crowned 

 with the calyx. — Flowers umbelled ; umleU sessile, termi- 

 nal, involucrated ; involucrum many-leaved. 



Sherardia arvensis. Field sherard. 



Leaves 6 in a whirl; flowers terminal, sessile, umbelled; 

 involucrum 8-leaved. 



Rubeola arvensis repens cserulea, Rail Syn. 225, 1. 

 Sherardia arvensis, Lin, S. P. 149. 

 Litlle field madder. 



Corn-fields ; annual ; April to September. 

 Herb diffuse, bald or hairy; leaves pointed, keel and edge 

 rough ; corolla purplish blue. 



