Botanical Excursion to the Mountains of North Carolina. 29 



Linn, ex Boott, (C. Buxbaumii, Wahl.) and C. conoidea, SchJc., 

 on the moist, grassy brow of a precipice of the Bluff; and to- 

 wards the base of the Negro Mountain, we observed C. virescens 

 and C. digitalis, Willd. 



In a cool, sequestered brook, we found the true Cardamine 

 rotundifolia, Michx., growing Hke 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, 

 bat from the axils of the upper leaves, and very frequently from 

 the apex of the weak ascending raceme itself, which is thus pro- 

 longed 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. rhomhoidea, that we could 



The figure of C gracillima, in Prof. Kunze's Supplement to Schkuhr's Carices, 

 is excellent, except that the immature peryginia are represented with more distinct 

 beaks than I have ever seen. To this genus, already perhaps the most extensive 

 in the vegetable kingdom, after Senecio, Mr. Sullivant has recently added another 

 species, an account of which may be appended to this note. As Dr. Boott had 

 already dedicated it to the zealous discoverer, without being aware that he had 

 distributed it under another name, I trust I may be allowed to publish the notes 

 of this sedulous caricographer unchanged : 



" C. SuLLivANTii (Boott) : spica mascula solitaria cylindrica, fosmineis 3-5 cy- 

 lindricis erectis gracilibus pedunculatis laxifloris, superioribus contiguis, infima 

 remota longe pedunculata basi attenuata, stigmalibus tribus, perigyniis ellipticis 

 brevi-rostratis emarginatis pellucido-punctatis apice marginibusque piloso-hispidis 

 squamam ovatam ciliatam hispido-mueronatam subasquantibus. 



" CulmuB bipedalis, gracilis, triqueter, pilis albis sparsis longis scabriusculus, 

 pars spicas gerens 2-9-uncialis. Folia 2 lin. lata, culmo brevidra, marginibus ner- 

 visque scabris. Bractea infima vaginans, foliacea, culmum adgequans, reliquse sen- 

 sim breviores, superiores evaginataa demum setacese. Spica mascula uncialis, vix 

 lineam lata, sessilis vel brevi-pedunculata : squamae muticae, obtusas, apice cilio- 

 latse, nervo scabro, pallide castaneas. Spicae foemineae 3-5, laxiflorse, 1-1^ uncias 

 longse, l-la lineas latae ; superiores contiguae ; infima remota (uno exemplo basi 

 composita) : squamaj pellucidse ciliolatse, nervo viridi scabro, hispido-mucronatae. 

 Peduncnli scabri, superiores sensim breviores. Perigynium (vix maturum) 1^ 

 lin. longum, |- lin. latum, viride, enervium .' apice hispidulum, ciliatum, brevi- 

 stipitatum, squamam subsquans vel eo paululum longius. Achenium immatu- 

 rum." — Boott in I'M. 



Hab. in sylvaticis prope Columbum, Ohionis, ubi detexit W. S. Sullivant, cum 

 C. pubescente, C. gracillima, etc. vigens. Aflinis C. arctatm (C. sylvaticae, aicct. 

 j9mer.) ex cl. Boott. — In exemplis nuperrime receptis, perigynia satis matura sunt 

 ovato-elliptica, lata, compresso-plana, enervia (marginibus exceptis), apice vix 

 rostrata. 



