: 95  £ Reg 
name of.O. clavata'*most appropriate...A singular plant, with the habit 
of a sibeciabe bie: nearly related. to Saururus, was also found in this 
neighborhood. among grass.on the banks of the Rio Grande. The genus 
has been described by Nuttall wg s eperinens poligried by him in Califor- - 
nia, but whether his Anemopsis californ s_ specifically identical with 
the new Moceak lant, posi to be oa as this last has regularly 
6-leaved involucres, about 6 stamens, and is perfectly glabrous 
e last mentioned plants indicate that we sich 5 ‘another bo- 
tanical region, we are surprised to meet here with Polygonum amphibium, 
common in the old and in the new world, and Cephalanthus ocoulentalks, 
so widely diffused in the United States. 
The famous desert, the Jornada ie Muerto, farnished, as was to be 
expected, its quota of interesting plan A Crucifera near Biscutella, of 
Europe, but with very short styles ‘and white flowers, was here met 
with abundantly. I had considered it as the type of a new genus, when 
I found in Hooker’s London Journal of Botany of February, 1845, Har- 
vey’s description of his new Californian genus yrea,*® which proba: 
bly must ‘be made to embrace our plant as a sect species. 
12 Opuntia clav n. sp. prostrata, ramulis ascendentibus, obovato- 
clavatis, ne. “areolis orbiculatis albo-tomentosis, margine superiore 
setas albas spine: escentes gerentibus; aculeis albis complanatis, radiantibus, 
6-12 minoribus, centra nah beg 4-7 majoribus, longioribus deflexis; floribus 
terminalibus; areolis ovarii 30-45 albo- tomentosis, setas albas 10- i geren- 
tibus; is inte prone ovato-lanceolatis acuminatis s. cuspidatis; petalis 
obtusis, erosis sae mucronatis; Paar ate ie brevibus erectis; pace 
elongato-clavata, pollens umbilicata, setaceo-s 
About Albuquerque (W.,) about eis Fe, on hs high plains, never on 
the mountains, (Fendler.) Mr. Fendler informs me that the ascending 
joints sprout a or near their base, and that. in this manner they finally 
form a large spreading ‘mass, often 2 and even 4 feet in diameter, to 
which the wilite Hine spines give a very pretty appearance. Joints or 
branchlets 14 to 2 inches long, tubercles at their base smaller, with 
pa spines, towards the upper and thicker end larger, with stouter and 
longer spines; radial spines 2 to 4, central ones from 4 to 9 or 10 lines 
silis, biscutata, basi et apice b opgataee: a latere Ra compre ssa. Semi- 
na in loculis solitaria, compressa, Immarginata, horizonta alia. Cotyledones 
planae radiculae descendenti septum goes accumbentes. “ 
A oe / 4 
scence, me goa leaves, yellow © or white flowers es. el 
terminal racemes. 
