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



tiolata, oblonga, mucronata, mucrone brevi subulato recto, 

 margine integerrima v. parce denticulata, coriacea, supra 

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

 minulis, subtus dense cinereo-tomentosa, fere bipollicaria, 

 9 lineas v. parum ultra lata. Flores glomerati, in thyrsum 

 confertum ovatum dispositi. Pedunculi et pedicelli brevis- 

 sirai, dense lanati. Involucrum polyphyllum, decussatim 

 imbricatum ; squamis exterioribus ovatis, acutiusculis, con- 

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

 vissime lanuginosis. Flosculi 5, omnino ut in pracedente. 

 Anthera basi biseta? : sctis basi ramulosis : appendiculd line- 

 ari, acutiuscula. Stigma bilobum : lobis semiteretibus, obtu- 

 sis, crassis, minute papillosis. ^c/*e?*/apilosa. Pappus fusco- 

 purpureus : radiis apice penicillatis, ima 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. Las:. Mss. 

 Perdicium serrulatum. Herb. S. et M. 

 In Mexico. Sesse et Moci?ino.^ • 



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, costal venisque ramosissi- 

 mis prominulis reticulata, subtus punctis numerosissimis 

 resinosis ornata, 3 pollices longa, unciam v. sesquiunciam 

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



Flores 



