crucifkrj:. (mdstakd family.) 23 



§*2. 



Pod onhhisceut, 1-celled. 



Poil orbicular, -winged with a thin broad margin; flowers minute. ..Thysanocarpus. 9 

 Pod long, pithy; seeds hirge; flowers hvrge, veiny Raphanus. IG 



1. CARD AMINE, L. 



Pod linear, -with somewhat thickened margins, merely pointed or beaked above; valve 

 flat, nerveless. Seeds in one row somewhat flattened, wingless; cotybtbins n:it. ucum- 

 bent. Sepals equal. Petals white or pinkish. 



1. C. paucisecta, Bcnth. Stems from small deep-seated tubers, erect, 8 to IS inches 

 high; leaves various; the upper deeply lobed or parted, the lower often simple; petals 

 li to 9 lines long; pods 1 to 1^- inches long. 



2. ARABIS.. L. 



Pod linear; valves 1-nerved, not strongl3^ Seeds in 1 or 2 rows, flattened; cotyledons 

 ^/ lujumbent. Sepals short or narrow, rai'ely colored. Petals with a narrow claw, white, 

 rose-colored, or purple. 



1. A. blepharophylla, Hook. & Am. Stems often tufted 4 to 12 inches high; 

 leaves strongly ciliate, sometimes sparingly sinuate-toothed, the lower obovate or broadly 

 Bijatulate, the caulinc oblong, sessile; petals bright purple, G to 9 lines long. 



2. A. Breweri, Wat. Cespitosc, canescent, with dense stellate pubescence; stems 2 to 

 10 inches high; petals 1 to 4 lines long, deep rose-color; sepals purplish; pods spreading 

 or recurved. 



3. CHEIRANTHUS, L. 



Pod elongated, compressed; valves 1-nerved or carinate. Seeds in one row, flattened, 

 not winged; cotyledons acumbent, or rarely oblique. Calyx not colored, the outer sepals 

 strongly gibbous. Stigma with two spreading lobes. 



1. C. Asper, Cham. & Sch. Hather sparingly pubescent with appressed 2-partcd 

 hairs; stem simj)lc erect, leafy, 1 to 3 ft. high; leaves spatulate or oblanceolate, the lower 

 long petioled, entire or sinuate-toothed; sepals broad 4 to C lines long, half the length 

 of the bright yellow or orange petals; jiods 1\ to 2 inches long. 



4. ERYSIMUM, L. 



Pod 4-anglcd by the prominent mid-nerve of the valves, not stipitate; cotyledons 

 incumbent or oblique. Sepals, petals and stigma like the last. 



1. E. asperum, DC. Similar to the last; sepals narrower; petals usually creamy 

 white to yellow. 



5. BRASSICA, L. iMusTARD. 



Pod nearly terete or somewhat 4-«ided, pointed M'ith a long conical l»cak. Seeds in 



