IN NORTH CAROLINA. 237 
of the Bluff; and, towards the base of the Negro Mountain, 
we observed C. virescens, and C. digitalis (Wiild.) 
In a cool sequestered brook, we found the true Cardamine 
rotundifolia, (Michx,) growing like a Water-cress, (for which 
it might be substituted, as its leaves have exactly the same 
taste,) but producing numerous stolons, two to three or more 
feet in length. These runners arise not only from the base 
of the stem, but from the axils of the upper leaves, and very 
frequently from the apex of the weak ascending raceme itself, 
which is thus prolonged into a leafy stolon, hanging down 
into the water or mud, where it takes root. Its habit and 
appearance are so unlike even the summer state of our 
northern C. rhomboidea, that we could not hesitate to con- 
sider it a distinct species. The subjoined diagnostic charac- 
ter will doubtless suffice for its discrimination.* 
nervisque scabris. Sractea infima vaginans, foliacea, culmum adzquans, reli- 
que sensim breviores, superiores evaginatw demum setacee. Spica mascula 
uncialis, vix lineam lata, sessilis vel brevi-pedunculata: squame mutice, obtuse, 
apice ciliolatze, nervo scabro, pallide castanem, Spice feminee 3-5, MAR 
1-14 uncias longæ, 1-14 lineas late; superiores contigue ; infima remota (un 
exemplo basi composita): squame pellucidz ciliolate, nervo viridi See, Gr 
do-mucronate. Pedunculi scabri, superiores sensim breviores. Perigynium(vix 
maturum) 1$ lin. longum, $ lin. latum, viride, enervium (?) apice hispidulum, 
ciliatum, rage is — m subzequans vel eo paululum longius. 
Achenium immatur —Boott : 
Hab. in die prope Col Et Ohionis, ubi detexit J£, S. Sullivant, cum 
C. pubescente, C. gracillima, etc. vigens. | Affinis C. arctate, (C. sylvatica, auct. 
Amer.) ex. cl. Boott.—In exemplis nuperrime receptis, perigynia satis matura 
Sunt ovato-elliptica, lata, compresso-plana, enervia (marginibus exceptis) apice 
YIX rostrata. 
* Cardamine rotundifolia (Michz.) ; glaberrima decumbens, stolonibus repen- 
tibus, radice fibrosa, foliis omnibus conformibus (radicalibus sæpe trisectis, 
segmentis Weide parvis), petiolatis rotundatis plerumque subcordatis in- 
tegriusculis vel repando-inuatis, siliquis parvis stylo subulatis, stigmate 
minuto, MUR ovalibus.—C. rotundifolia Michz., Fl. 2, p. 305 Hook. Bot. 
ise 9, (statu vernali; in exemplis Carolinianis folia zeng magis 
petiolata;) Diaa Fi. Cest. ed. 2, p.384. C. rotundifolia y. Torr. et Gray, 
CR A 3 
Hab. i in rivulis fontibusque opaculis montium Caroline, Virginie, Kentucky, 
et in Pennsylvania, 
