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



Oreophila. 

 Hypochceridis sp., Kunth. 



Pappus plumosus, sessilis. Involucrum imbricatum, 



Involucrum subrotundum, polyphyllum, imbricatum : squamis 

 lanceolatis, obtusis, membranaceis ; exterioribus apice la- 

 nuginosis. Receptaculum paleatum : paleis lanceolatis, sca- 

 riosis, uninerviis, acumine longo, setaceo instructis. Flos- 

 culi lineari-ligulati : tubo tenui, ligula 5-dentat4, 6-nervi^, 

 dupl6 longiore. Anthera appendiculd ligulatd, membra- 

 nace^ coronatae, basi dentibus 2, lanceolatis, acuminatis, 

 membranaceis, aequalibus munitee. Stigmata filiformia, 

 recurvata, minutissimfe papillosa. Achenia oblonga, an- 

 cipiti-compressa, laevia. Pappus sessilis : radiis simplici 

 serie contiguis, filamentoso-plumosis, validis, inaequalibus, 

 basi crassiore persistentibus. 



Herba perennis, caspitosa, acaulis. Radix fusiformis^ cortice 

 fusco obducta, digiti minoris crassitie. Folia numerosa, in 

 orbem acta, humifusa, petiolata, linearia, tunc lanceolata, 

 obtusa, obtuse sinuato-dentata, coriacea, suprd glabra, subtus 

 sed prcBcipue ad cost am mediam pilosa, 2 — S-pollicaria. Flos 

 solitarius, sessilis, in foliorum medio latens, magnus, aureus. 

 Pappus cinereus. 



Herba locis alpinis incola, unde nomen ab opos, opeoy, mons, et 

 (j>iXeco, amo, i. e. planta in montibus florescens. 



1. O.sessiliflora. 



Hypochoeris sessiliflora. Kunth in H. et B. Nov. Gen. et Sp. 

 PL iv. p. 2. 



In Peruviae summis alpibus Cordilleras de los Andes Hispa- 

 nic^ dictis. Ruiz et Pavon. 1/ . 



The uniform sessile pappus has led me to regard this plant as 



constituting 



