200 Mr. D. Don's Descriptions of new Genera and Species 



tiolata, oblonga, raucronata, mucrone brevi subulato recto, 

 margine integerrima v. parc^ denticulata, coriacea, supra 

 viridia, lucida, reticulato-venosissima, venis siccitate pro- 

 minulis, subtils dens^ cinereo-tomentosa, fer^ bipollicaria, 



,.' 9 lineas v. parilm ultra lata. Flores glomerati, in thyrsum 



,Bibi€onfertum ovatum dispositi. Pedunculi et pedicelli brevis- 

 simi, densfe lanati. Involucrum polyphyllum, decussatim 



}' imbricatum ; squamis exterioribus ovatis, acutiusculis, con- 

 cavis ; interioribus oblongis, obtusis, pariter coriaceis, le- 

 vissimfe lanuginosis. Flosculi 5, omnino ut in pracedente. 

 AnthercB basi bisetae : setis basi ramulosis : appendicula line- 



o ari, acutiuscul4. Stigma hTXohxxra.: /o^w semiteretibus, obtu- 

 sis, crassis, minute papillosis. ^cAenmpilosa. Pappus fusco- 

 purpureus : radiis apice penicillatis, im^ basi connexis. 



This species is intimately allied to the preceding; but its 

 oblong, and much narrower leaves, appear to constitute a spe- 

 cific distinction. 



** Floribus pappoque albis, acheniis papilloso-scabris, teretiusculis. 



3. P. reticulata, foliis sessilibus oblongo-cuneatis serrulatis gla- 

 bris, thyrso composito laxo. 

 Proustia reticulata. Lag. Mss. 

 Perdicium serrulatum. Herb. S. et M. 

 In Mexico. Sesse et Mocinno. ^ . 



Frutex erectus, rigidus, ramosissimus. Rami sulcati, glabri. 

 Folia sessilia, oblongo-cuneata, quandoque obovata, argute 

 serrulata, coriacea, basin versus integerrima, utrinque gla- 

 bra, siccitate lutescenti-viridia, costA venisque ramosissi- 

 mis prominulis reticulata, subtus punctis numerosissimis 

 resinosis ornata, 3 pollices longa, unciam v. sesquiunciam 

 lata; rawezs lineari-oblongis, mucronulatis, vix pollicaribus. 

 '* Flores 



