240 
magnitudine seminis Pisi sativi, albis, farinaceis, fibris 
numerosis capillaribus immixtis. Caulis erectus vel 
basi solummodo nonnunquam magis minusve decumbens, 
flexuosus, palmaris ad pedalem, simplex vel superne 
rarissime divisus, glaber, in examplaribus septentrionali- 
bus a Drummondio lectis, pubescenti-hirsutus, superne 
precipue foliosus. Folia remota; radicalia (plurima) et 
. caulina inferiora longe petiolata orbiculari-cordata, sinu 
profundiusculo, integerrima vel margine leeviter sinuata: 
superiora seu intermedia, brevius petiolata, ovalia seu 
elliptica, sinuato-dentata; suprema sensim minora, magis 
elongata, profundius dentata, omnino sessilia: omnia 
glabra subsucculenta. Flores corymbosi, magnitudine et 
colore C. pratensi. Calyx glaber, nonnunquam, ubi cau- 
lis pubescens, pedicellique hirsuti, pilis raris sparsi. 
Petala obovato-cuneata, inferne in unguem attenuata. 
Fructus immaturus lineari-attenuatus, gracilis, patens, 
stylo elongato terminatus. 
Has. Borders of rivulets and springs, probably through- 
out the whole length of North America; in the Southern 
States, as in the upper districts of Carolina and Georgia 
(Elliott); banks of the Mississippi (C. S. Parker); in the 
Middle States, Bigelow, Boott, Greene, Darlington, Schweinitz ; 
as far north as lat. 57°, and there extending from the Rocky 
Mountains to Hudson's Bay, (Drummond). 
* The plant, after maturing its fruit, speedily withers and 
disappears. After the first week in June it is difficult to find 
a vestige of it.” (Darl.)—The tubers of the root are said by 
Dr. Darlington to be pungent to the taste; and the herbage 
Mr. Pursh describes as so much resembling spring Cresses, 
that he strongly recommends the plant to general cultivation, 
as it will grow in any soil. Persoon's name of tuberosa; which 
is of equal date with that of rhomboidea, would be more ii 
to the plant. 1 
Tas. CIX. Fig. 1, Flower. Fig. 2, Petal. Fig. 3, Ra- 
ceme of young fruit, and fig. 4, single young fruit or siliqua: 
