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



bristly hairs. The flowers are also larger ; and the leaflets of the 

 involucrum nearly twice the number, and arranged in a double 

 series. The genus, which appears to be a very natural one, is 

 essentially distinguished from TrLvis by the naked receptacle. 



Proustia. Lag. et Dec. 



Receptaciihtm pilosum. Flosculi 5. Pappi radiis penicillatis. 

 Involucrum polyphyllum, imbricatum. 



Involucrum tubulosum, polyphyllum : squamis ellipticis, integer- 

 rimis, multiplici serie adpresse imbricatis. Receptaculum 

 parvum, copiose pilosum. Flosculi 5, hermaphroditi, bi- 

 labiati ; labio exteriore ligulato, tridenticulato, 4-nervio, 

 patulo, demum revoluto ; interiore profunda bipartite : 

 segmentis lineari-lanceolatis, binerviis, obtusiusculis, revo- 

 lutis, primum conglutinatis. Antherce in tubum connate, 

 basi bisetae : setts simplicibus v. ramulosis : appendicula ter- 

 minalis linearis, acutiuscula, cartilaginea. Stigma bilobum : 

 lobis apice truncatis, papilloso-pruinosis, recurvis. Achenia 

 cuneata, compressa, pilosa v. teretiuscula et papillosa : 

 disco epigyno dilatato. Pappus persistens : radiis duplici 

 ordine copiosis, apice penicillatis. 



Arbusculae v. Frutices ramosissimi . Folia alterna, indivisa. Flores 

 Ihijrsoidei v. fasciculato-corymbosi, purpurei aut lutei. 



* Floribus thyrsoideis purpureis, aclicniis pilosis, pappo colorato. 

 Propria?. 



1. P. pyrifolia, foliis petiolatis cordato-rotundis ovalibusve sub- 



tus tomentosis. 

 Proustia pyrifolia. Lag. et Dec. in Ann. Mus. 19- p- 70. t. 4. 

 In Chili prope Talcahuana (Ludovicus N6e) ; ad Coquimbo. 



Caldcleugh. Tj . 



Arbuscula erecta, ramosissima, tempore florendi ornatissima. 



Rami 



