CRUCIFEK.E. (MUSTARD FAMILY.) 73 



and more pungent than in the last ; lower leaves with a large terminal lobe 

 and a few small lateral ones. 1'ields and waste places. (Adv. from Eu.) 



B. CAMFESTEIS, L., in the form of the Ri TABAGA and the T CRN IP, some- 

 times persists a year or two in neglected grounds. 



18. CAPSELLA, Medic. SHEPHERD'S PURSE. 



Pod obcordate-triangular, flattened contrary to the narrow partition; the 

 valves boat-shaped, wingless. Seeds numerous. Cotyledons incumbent. 

 Annuals; flowers small, white. (Name a diminutive of capsa, a box.) 



C. BIKSA-PASTOHIS, Moench. Root-leaves clustered, pinnatilid or toothed ; 

 stein-leaves arrow-shaped, sessile. Waste places; the commonest of weeds. 

 April -Sept. (Nat. from Eu.) 



19. THLASPI, Tonrn. PENNYCRESS. 



Pod orbicular, obovate, or obcordate, flattened contrary to the narrow par- 

 tition, the midrib or keel of the boat shaped valves extended into a wing. 

 Si eda 2-8 in each cell. Cotyledon- arciimbcut. Petals equal. Low plants, 

 witli root-leaves undivided, stem-leaves arrow-shaped and clasping, and small 

 white <>r purplish flowers. (Ancient Greek name, from 6\a<t>, to crush, from 

 the flattened pod.) 



T. AKVKXSK, L. (Eii.i.D P. or MITHI:II>\ 1 1. MIMA.RD.) A smooth an- 

 nual, with broadly winged pod }/ in diameter, .-everal >eeded, deeply notched 

 at top; style minute. Waste places; rarely naturalized. (Nat. from Eu.) 



20. LEPIDIUM, Tourn. PI:IMM:RWORT. PEPPERGRAS-. 



Pod roundish, much flattrned contrary to the narrow partition ; the valves 

 boat-shaped and keeled. Seeds solitary in each cell, pendulous. Cotyledons 

 incumbent, or in u. 1 accumhent! Elowers small, white or greenish. (Name 

 from \firiStov, a little scale, alluding to the small flat pods.) Ours are 

 annuals or biennials, except the last. 



* Leaves all with a tapt //;/</ l>ast', /lie upp* r /nuur or lanceolate and entire, the 

 lower and often tin' /</<//' n> x im-ix, tl or pinnntijid ; pods orbicular or oval, 

 with a fti/Ki'l wit'-l, nt the top ; tin' xtyli' minute or none ; stamens orJy 2. 



1. L. Virginicum, L. (WILD PEPPI \:< i:\-s.) Cotyledons accumbmt 

 and seed minutely margined; pod marginfess or obscurely margined at the 



tup; petals present, except in some of the later flowers. June -Sept. A 



common roadside weed, which has immigrated from farther south. 



2. L. intermedium, Gray. Cotyledon* !n< mubmt as in the following; 

 p,,,l mh,iii,! ; i irnni-iinir'jin<d at I lie top,- petals usually minute or wanting; 

 otherwise nearly as in u. 1. Dry places, from western N. Y. and N. 111., 

 north and westward. 



L. KirnERALE, L. More diffuse, the smaller and oval pods and the. seeds 

 nmi-'/iiili-** ; JK /m's ii/ii;i,/a trim/in'/. Roadsides, near Boston, Philadelphia, 

 etc.'; not common. (Adv. from Eu.) 



* * Stem-leaves with a sagittate partly clasping base, rather crowded. 



L. cA.Mi>ESTUR,Br. Minutely .s-o/i doirm/ ; leaves arrow-shaped, somewhat 

 to- thed ; p,,rlx ovatt . iri'ni/>-'d. rough, the style longer than the narrow notch. 

 Old rields, Mass, and N.'Y. t> Va. ; rare. (Nat. from Eu.) 



L. D];\HA, L. Perennial, obscurely hoary; leaves oval or oblong, the 

 upper with broad clasping auricles; flowers corymbose; pods heart-shaped t 

 win<//<:, thickish, entire, tipped with a conspicuous style. Astoria, near New 

 York, It.-C. Eaton. (Adv. from Eu.) 



