CRUCIFER^E. (Ml'STARD FAMILY.) 69 



1. L. globosa, Watson. Minutely hoary all over ; stems spreading or de- 

 cumbent from an annual or biennial root ; leaves oblong or lanceolate with 

 a tapering base, repaiid-toothed or nearly entire; raceme at length elongated, 

 with filiform diverging pedicels; petals light yellow; style filiform, much 

 longer than the small globose, anuish, about 4-seeded pod; seeds margin! 

 ( Vesicaria Shortii, Ton-.) Koeky banks, Ky. to Teiin. and Mo. May, June. 



'2. L. gracilis, Watson. Annual, slender; pubescence very fine ; leaves 

 narrowly oblauceolate ; pods glabrous, suberect on ascending or curved pedi- 

 cels, stipitate; style long. (Vesicaria gracilis, lluuk.) S. Kan. to Tex. 



3. L. Ludoviciana, Watson. Biennial or perennial ; pubescence com- 

 pact; leaves Hnear-oblanceolate, mostly entire; jiods pubescent, pendulous on 

 recurved pedicels; style long. (Vesicaria Lud^viciaua, L>C'.) Minn, to 

 Neb. and southwestward. 



9. CAMELINA, Onmtz. FALSE FLAX. 



1'od obovoi.l or pear-shaped, pointed, rlattish parallel to the broad parti- 

 tion ; vahes l-ner\cd. See, Is ininier,,us, oblong. Cotyledons incumbent. 

 Style slender. Flowers small, yellow. (Name from x a M a ' "'"'"'.7, and \ivov, 

 flax.) 



C. SATIVA, Crantz. Annual: leaves lanceolate and arrow-shaped; pods 

 margined, large. A weed in lla\-li"lds, etc. (Adv. from Eu.) 



10. SUBULARIA, L. AWLWOKT. 



Pod ovoid or globular, with a broad partition; the turgid valves 1-nerved. 

 Seeds several. Cotyledons long and narrow, inciimbently folded transversely, 

 i. I-., the cleft extending to the radicular side of the curvature. Stvle none. 

 A dwarf stendess perennial, aquatic; the tufted leaves awl shaped (whence 

 the name). Scape naked, few-llowered, 1-3' high. Flowers minute, white. 



1. S. aquatica, L. Margin of lakes in Maine; Echo Lake, Fraucouia, 

 N. II., also in alpine regions of the western mountains. June, July. (Eu.) 



11. NASTURTIUM, 11. Br. WATER-CRESS. 



l'd a short silnmf or a .-iliele, varying from oblong-linear to globular, 

 terete or nearly so; vahes strongly convex, nerveless. Seeds usually numer- 

 ous, small, turgid, marginle.-s, in 2 irregular rows in each cell (except in N. 

 sylvestre). Cotyledons accmnheiit. Aquatic or marsh plants, \\ith yellow or 

 white ilo\\ers, and commonly pinnate or pimiatilid leaves, usually glabrous. 

 (Name from A~K*-</S t<irtu*, a convulsed ii"se, alluding to the effect of its pun- 

 gent qualities.) 



1. Pttalx tr/iite, ticice the length of the ralyx; pods linear; leaves pinnate. 



N. on i< IN.VI.K, R. Br. (Tin i: \\" \ 1 1 i:-< '1:1 -s.) Perennial; stems spread- 

 ing and rooting ; leailets .'S - 1 1 , roundish or oblong, nearlv entire ; pods (6-8" 

 long) ascending on slender widely spreading pedicels. Brooks and ditches; 

 escaped from cultivation. (Nat. from Eu.) 



2. Petals yellow or yclln-ixli, seldom much exceeding tin- cali/x ; pods linear, 

 oblong, or even or"i'I <,, globular ; leaves mostly pirmatifid. 



* Perennial from creeping or sulit< rnnn <tn shoots ; Jiowers rather large, yellow. 



N. svi.vi'>TTtK, 1\. Br. (YKLLOW CKKSS.) Stems ascending; leaves pin- 

 natdy parted, the divisions toothed or cut, lanceolate or linear; pods (^' long) 



