MUSTARD FAMILY. 61 



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

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

 in spring. Banks of sircanis, N. 



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

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



'^°- ■) * Leaves simple. % 



C. rhomboidea, DC. Stems upright from a small tuber, simple, 

 bearing rather large, wliite, or ro.se-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 tlbrous ; leaves (all much alike) roundish, 

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

 mouii ains. ^ ^ Leaves pinnate ; flowers showy. 11 



C. pratdnsis, 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 

 gar ens. ^ ^ ^ Leaves pinnate ; flowers small, white. ® or (2) 



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

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

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

 and summer. 



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

 naturalist, MatthioU.) 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 showy varieties. 

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

 white. 



M. incana, Br. Common Stock. 2/ (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 iNTERMEniATE 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 rare in each cell, orbicular, somewhat winged. 



* Flowers not showy, xchite or whitish ; native. ® (f) 



t- Low, spreading ; leaves pinnately parted. 



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

 grounds, Va. to Mo. and S. 



-1- -I- Erect, leafy- stemmed ; leaves simple ; the slender pods ascending or 

 erect ; seeds almost wingless. 



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

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

 with a distinct style. Penn. to Ohio and S. 



