280 DECANDttIA PENTAGYNIA 



Sepals lance-oblong, rather obtuse, often slightly emarginate, hairy, scarious at 

 apex and on the margin. Petals white, cuneate-oblong, bifidly cmarginatc, about 

 twice as long as the sepals. Stamens as long as the sepals. Styles about as long 

 as the stamens. Capsule cylindric, about twice as long as the calyx ; teeth erect, 

 lanceolate, rcvolute on the margin. Seeds compressed, cuneate-obovate, muricatc, 

 reddish brown. 



Udb. Serpentine rockf W. Chester, Strode's Mill: frequent. Fl. May. F/\ June, July. 



05s, This species, when my Catalogue was published, Mr. Schtceinit* thought 

 might be the C. oblongi folium, Ton; and it was hesitatingly inserted by that 

 name, [t was afterwards submitted to Dr. TVrrey, who informed me it was not 

 his plant; but he did not name it. I have .since ascertained that it is the C. villo* 

 sum of Muhlenberg -though labelled C. lanutum, in his Herbarium. It is also 

 identical with the plant erroneously given as C. hirsutum, in my Catalogue. It 

 appears to hold an intermediate station between C arvtnse, and C. nutans; but 

 Sufficiently distinct, I apprehend, from both. It is a hardy plant,— the lower leaves 

 living through the winter. It abounds on all our I anks of serpentine rock;— where 

 its largo white (lowers are quite conspicuous in the month uf May ; but it is very 

 rarely to be met with elsewhere. 



5. C. nutans, Itaf. Viscid-pubescent ; stem striatc-sulcato, panicu- 

 Iately branched at summit ; leaves elongated, linear-lanceolate, acute, 

 finally shorter than the intemodes ; panicle much elongated, dichotO- 

 mously branched, loose, with the flowers nodding on long pedicels ; pe- 

 tals nearly twice as long as the calyx. Jtech, Hot. p. 54. 



C. longe-pedunculatum. Jlluhl. Catal.p. 46. Hart. Phil. 1. /;. 215. 



Flovul. Cestr. p. 54. 



C. glutinosum. Nutt. Gen. I. p. 291. Not of DC. 



.ilsoy C. viscosum. Florid. Ccstr. p. 54. Not of Linn. 



Nodding Ceuastiu^. 



Plant pale yellowish green, pubescent, and remarkably clammy. Root annual. 

 Stems 8 to 12 or 15 inches high,several from the same root, erect, rather weak, 

 nearly simple,' deeply striate. Leaves \ to 2 or 2 and a half inches lung, and 1 

 fourth to near half an inch wide, sessile and amplcxicaul, at first longer, finally 

 shorter than the interludes ; the lower urns oblanceolate, or subspatulate. 

 Panicle terminal, dichotomous, at first short (but throwing out the long lower 

 dicholomal pedicels), finally the I. ranches are much elongated, 3 or 4 times dlcho* 

 lomous, spreading, with lance-oblong brads at the bifurcations, and 1 -flowered 

 pedicels In the forks an inch to an inch and half in length. Sepals lance-oblong, 

 rather obtuse, the inner ones scarious on the margin. Petals white, otnivate-ob- 

 long, with a short bifid acuminatum, cuneate at base, scarcely twice as long as the 

 sepals. Stamens shorter than the sepals. Styles short ; stigmas clavatc, spread- 

 ing, and pubescent. Capsule cylindric, a little curved, nearly three times as long 

 as the calyx ; teeth erect, acuminate, the margins revolute. Seeds compressed, 

 cuneate-obovate, with a broad groove round the edge, muricate, tawny, or pale 

 reddish brown. 



Hob. Moist low grounds ; along shaded rivulets : frequent. Fl. May. Fr. June. 



Obs. The plant intended by C. viscosurn, in Floiuta Cestrica, was a young spe' 

 cimen of this. The C. scmidecandrum, of the same work, was also a mistukiv" 

 being nothing but a starved specimen of Stclluria media ! Two other species are 

 enumerated In the U. States j and 10 species in British America. 



