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



segmentis lineari-ensatis, strictis, margine conniventibus, 

 cartilagineis, apice acutis, intus canaliculatis, delist seri- 

 ceo-villosissimis, penicillatis, denique glabratis : tubo cylin- 

 draceo, vix fauce dilatata, extus et intus copiose sericeo-vil- 

 loso, substantia crassiore, limbo fere duplo breviore : nervis 

 5, in tubo simplicibus, ad laciniarum sinus divisis in ramis 

 2 strictis marginalibus, summo apice confluentibus ; secun- 

 dariis nullis. Stamina disco epigyno cum corolla inserta : 

 filament a libera, complanata, glabra, interne fere mem- 

 branacea, neryo manifestissimo, canaliculata, basi dilatata, 

 corolla? imo tubo adhaerentia ; articulo snperiore duplo 

 angustiore, 5-pl6 breviore : anther ce. in tubum connata?, 5 

 lineas longae, appendicular lineari-ligulata obtusa membra- 

 nacea, ips^ anthera dimidio longiori coronatae, basi bise- 

 tosae : setts callosis, strictis, imequalibus, interiori latere 

 leviter canaliculatis, extremitate filamentosa, spirali, nunc 

 retrofracta v. revolut^i, decidua ! Stylus filiformis, uncialis, 

 v. fere ses qui uncialis. Stigma bilobum : hbis lingulatis, 

 obtusis, pruinosis, compressis. Achenia turbinata, undique 

 adpresse villosissima. Pappus fulvus, deciduus : radiis 20 

 circiter, valde phimosis, inaequalibus, im4 basi in annulum 

 connatis : rachibus setaceis, inferne gradatim crassioribus, 

 apice tenuissimo, simplici. 



Such is the description of authentic specimens of Bacasia spi- 

 nosa contained in the herbarium of Ruiz and Pavon, which will 

 be found to correspond in every essential point of structure with 

 the genus Chuquiraga. It is evident, as I have before observed, 

 that this plant had been referred to Bacasia by the above-men- 

 tioned botanists from habit alone, without any regard to the struc- 

 ture of the flower, as the slightest examination would have con- 

 vinced them of the incorrectness of that arrangement. Cavanilles 



seems 



