DICOTYLEDONOUS PLANTS. 25 
Il. CARDAMINE, BITTER CRESS. 
Pods linear, much as in preceding genus. Seed-stalks 
slender. Smooth perennials, mostly in springs, brooks, or 
wet soil. Flowers smaller than in the preceding genus. 
(C. RHOMBOIDEA), SPRING Cress. Stems simple, upright or 
nearly so, from a tuberous base and tuber-bearing rootstock ; root- 
leaves roundish; lower stem-leaves ovate or oval-diamond-shaped. 
Flowers white, rather showy. 
(Variety PURPUREA.) Stems lower; flowers rose-purple; less 
common than the white form. 
Ill. MATTHIOLA, STOCK, GILLYFLOWEP. 
Pods nearly cylindrical, except for a prominent midrib on 
each valve; stigmas large and spreading; seeds winged ; 
flowers in showy racemes of many colors ranging from white 
to crimson. 
(M. 1ncana), Common Srock. Biennial or perennial, with 
somewhat woody stems. Cultivated from Europe in greenhouses 
and gardens. 
IV. CAPSELLA, SHEPHERD’S PURSE. 
Pods flattened at right angles to the partition, short, more 
or less triangular and notched at the top; ovules many in 
each cell. 
(C. Bursa-pastoris), ComMMON SHEPHERD’S Purse. A well- 
known weed, by roadsides and in waste ground; leaves varying 
much in form, those from the base of the stem more or less pinnately 
parted or cleft, those of the stem arrow-shaped and somewhat clasp- 
ing; flowers insignificant, white; raceme lengthening much as the 
pods mature. 
V. LEPIDIUM, PEPPERGRASS. 
Pods flattened as in the preceding genus, roundish, some- 
times notched at the top; ovule only one in each cell, flowers 
insignificant, white or greenish. 
(L. Vrreintcum), PrpPpeRGRASS, Birps’ Pepper, TONGUE- 
GRASS. Pods notched at the top; petals small ; leaves all tapering 
at the base, linear or lance-linear, the larger ones rather deeply and 
irregularly serrate. 
