MUSTARD FAMILY. 61 



whorl, each 3-parted into linear or lanceolate leaflets, which are cut or 

 cleft into narrow teeth, or the lateral ones 2-lobed ; flowers white or rosy 

 in spring. Banks of streams, N. 



4. CARDAMINE, BITTER CRESS. (Ancient Greek name.) % 

 Mostly attractive little plants of spring or early summer. (Lessons, 

 Fig. 401.) ^ Leaves simple. 11 



C. rhombofdea, DC, Stems upriglit from a small tuber, simple, 

 bearing rather large, white, or rose-purple flowers in spring ; and leaves 

 simple, angled, or sparingly toothed, the lowest rounded or heart-shaped, 

 the upper ovate or oblong ; seeds round-oval. In wet places northward. 



C. rotundif61ia, Michx. Mountain Water Cress. Stems weak or 

 decumbent, branching ; root fibrous ; leaves (all much alike) roundish, 

 angled ; flowers white ; seeds oval-oblong. N. J. to Ky. and S. in the 

 mountams. ^ ^ Leaves pinnate ; flowers showy . 11 



C. prat^nsia, Linn. Cuckooflower or Ladies' Smock. Stem as- 

 cending from a short perennial rootstock ; leaves with rounded and stalked, 

 entire, small leaflets ; flowers in spring, pink or white. Wild, but rare, 

 in bogs at the N. A double-flowered variety is an old-fashioned plant in 



gardens. ^ ^ ^ Leaves pinnate ; flowers small, tohite. ® or (2) 



C. hirstita, Linn. Small B. A low and branching insignificant herb, 

 usually not hairy ; root slender, fibrous ; leaflets angled or tootlied ; pods 

 narrow, upright. Wet places. Common and variable ; flowers spring 

 and summer. 



5. MATTHIOLA, STOCK or GILLYFLOWER. (Named for the early 

 naturalist, Matthioli.) Cult, garden or house plants, from Eu., 

 hoary-leaved, much prized for their handsome and fragrant, pretty, 

 large flowers, of which there are very double and shovyy varieties. 

 Colors various, pure, or variegated, through crimson, purple, rose, and 

 ■white. 



M. incana. Br, Common Stock. :>i[ (2) in cultivation. Stout stem 

 becoming almost woody ; not hardy at the N. The source of the Bromp- 

 ton and Queen stocks. Flowers many colors. 



M. dnnua, Sweet. Ten Weeks and Intermediate Stocks. An her- 

 baceous plant, probably only a form of the last. 



6. ARABIS, ROCK CRESS. (Name from Arabia.) Flowers spring 

 and summer. Leaves mostly simple and undivided. 



§ 1. Seeds in 1 roio in each cell, orbicular, somewhat winged. 



* Flowers not shoicy, tchite or trhitish ; native. ® (g) 



+- Low, spreading ; leaves pinnately parted. 



A. Ludoviciina, Meyer. Nearly smooth ; pedicels very short. Open 

 grounds, Va. to Mo. and S. 



*- •<- Erect, leafy- stemmed; leaves simple ; the slender pods ascending or 

 erect ; seeds almost loingless. 



A. paLtens, Sulliv. Downy, l°-2? high, stem-leaves, oblong-ovate with 

 a clasping base ; pedicels spreading ; pods spreading or ascending, tipped 

 With a dlatiuct style. Teun- to Ohio and g. 



