crucijer^. 33 



Fields and waste places: partly naturalized. June and July. Stem 2 to C ftv t 

 high. How. Pods very numerous, nearly 1 inch lung. Seeds numerous, 



nearly black, used as a condiment. 



2. S. ALBA, L. White Mustard. 



Leaves pinnatifid, or lyrate, the terminal lobes luge, nearly smooth ; pods mostly 

 hispid, spreading, Bean ely as long as the sword-form beak. 



Cultivated: sometimes spontaneous in old fields. June and July. Stem 2 to 3 

 feet high. I mbose, yellow, rather large. Seeds large, pale yel 



TJxed as a condiment, and much esteemed in medicine. 



20. RAPHANUS. Linn. Radish. 



Gr. ra, quickly; anApJiaino, to appear: from its rapid growth. 



Calyx erect. Petals obovate, unguiculate. Pods trans- 

 versely many-celled or dividing into several joints, the lower 

 often seedless and stalk-like • the upper necklace-fbrm ; with 

 no proper partition. — Annuals or Biennials. 



1. R. RaphANISTRUM, L. Wild Radish. Charlock. 

 Leaves simply lyrate ; pod terete, jointed, smooth, becoming in matury 1-cellecL 



longer than the style; seeds 3 to 8. 



Fields and waste places. Introduced. July. Stem 1 to 2 fe^et high, hispid* 

 . about as large as the common radish. 



2. R. satiya, L. Garden Radish. 



Lata fce, netiolate; pod torose, terete, acuminate, scarcely loDge-r than 



lioels. A well known cultivated salad root from China. Stern 2 to 4 feet 

 high, very branching. Flowers white, tinged with purple. 



21. CHEIRANTHUS. R. Brown. Wall-Flower. 



Arabic kheyry; and anthos, a flower. 



Calyx closed, 2 of the sepals gibbous at the base. Pe- 

 tals dilated. Pod terete or compressed. Stigma 2-lobed 

 or capitate. Seeds in a single series, ovate compressed. — 

 Showy perennials, with lanceolate or ovate slightly toothed 

 leaves, and handsome fragrant flowers in jpanicled clusters or 

 racemes. 



1. C. hesperidoides, T. &. Gr. Rochet Wall-Flower. 



Smooth; lower leaves lyrate-pinnatifid; upper ovate-lanceolate, unequally and 

 sharply serrate; pedicels as long as the calyx ; limb of the petals obovate, entire. 



Banks of streams. Western Pa. May — July. Stem 1 to 3 feet high, simple or 

 branched. Leaves thin, 3 to 5 inches long, % as wide, those of the stem scarcely 

 petiolate. Flowers in terminal axillary racemes, pale purple, small. Fods 1% 

 inches long. Per. 



2. C. cheiri. Wall Flower. 



Stem somewhat shrubby at the base; leaves entire or slightly dentate, lanceolate, 

 acute, smooth ; branches angular; petals obovate; pods erect, acuminate. A popu- 

 lar garden flower from South Europe, admired for its agreeable odor, and its hand- 

 some corymbose clusters of orange or yellow flowers. Per. 



