BOTANICAL EXCURSION TO NORTH CAROLINA. 51 



with C. canescens, Linn, ex Boott ((7. Buxbaumii, Wahl.) 

 and C. conoidea, Schk., on the moist grassy brow of a preci- 

 pice of the Bluff ; and towards the base of the Negro Moun- 

 tain we observed C. virescens and C. digitalis, Willd. 



In a cool, sequestered brook, we found the true Carda- 

 mine rotundifolia, Michx., growing like the Water-cress (for 

 which it might be substituted, as its leaves have exactly the 

 same taste), but producing numerous stolons two or three or 



spicis angustioribus et laxifloris erectis, superioribus brevissime peduncu- 

 latis ; acheniis oblongo-ovoideis magis stipitatis. 



The figure of C. gracillima, in Professor Kunze's Supplement to 

 Schkuhr's Carices, is excellent, except that the immature perigynia 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 ac- 

 count 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, fcemineis 

 3-5 cylindricis erectis gracilibus pedunculatis laxifloris, superioribus con- 

 tiguis, infirma remota longe pedunculata basi attenuata, stigmatibus tribus, 

 perigyniis ellipticis brevi-rostratis emarginatis pellucido-punctatis apice 

 marginibusque piloso-hispidis squamam ovatam ciliatam hispido-mucrona- 

 tam subaequantibus. 



" Culmus bipedalis, gracilis, triqueter, pilis albis sparsis longis scabrius- 

 culus, pars spicas gerens 2-9-uncialis. Folia 2 lin. lata, culmo breviora, 

 marginibus nervisque scabris. Bractea infirma vaginans, foliacea, culmum 

 adaequans, reliqua3 sensim breviores, superiores evaginatse demum seta- 

 ceae. Spica mascula uncialis, vix lineam lata, sessilis vel brevi-peduneu- 

 lata : squamae, muticae, obtusae, apice ciliobatse, nemo scatro, pallida? 

 castaneae spicae fcemieae 3-5, laxiflorae, 1-1^ uncias longae, 1-1£ lineas 

 latae ; superiores contiguae ; infirma remota (uno exemplo basi composita) ; 

 squamae pellucidae ciliolatae, nervo viridi scabro, hispido-mucronatae. Pe- 

 dunculi scabri, superiores sensim breviores. Perigynium (vix maturum) 

 If lin. longum, ■£ lin. latum, viride, enervium ? apice hispidulum, ciliatum, 

 brevistipitatum, squamam subaequans vel eo paululum longius. Achenium 

 immaturum." (Boott in litt.) 



Hab. in sylvaticis prope Columbum, Ohionis, ubi detexit W. S. Sulli- 

 vant, cum C. pubescente, C. gracillima, etc. vigens. Affinis C. arctatce (C. 

 sylvaticae, auct. Amer.) ex cl. Boott. — In exemplis nuperrime receptis, 

 perigynia satis matura sunt ovato-elliptica, lata, compresso-plana, ener- 

 via (marginibus exceptis), apice vix rostrata. 



