286 Jl/r. D. Don's Descriptions of new Genera and Species 



segmentis lineari-ensatis, strictis, margine conniventibus, 



cartilagineis, apice acutis, intils canaliculatis, densh seri- 



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



draceo, vix fauce dilatatd, extils et intils copiosfe sericeo-vil- 



loso, substantia crassiore, limbo ferfe dupl6 breviore : nervis 



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



2 strictis marginalibus, summo apice confluentibus ; secun- 



dariis nuUis. Stamina disco epigyno cum corolla inserta : 



Jilamenta libera, complanata, glabra, infern^ fer^ mem- 



branacea, nervo manifestissimo, canaliculata, basi dilatata, 



corollie imo tubo adhaerentia ; articulo superiore dupl6 



angustiore, 5-pl6 breviore : anihera in tubum connatae, 5 



lineas longae, appendicul^ lineari-ligulata obtusd membra- 



nace^, ipsci anthera dimidio longiori coronatffi, basi bise- 



tosee : setis callosis, strictis, ineequalibus, interiori latere 



leviter canaliculatis, extremitate filamentos^, spirali, nunc 



retrofract^ v. revolut^, decidu^ ! Sli/lus filiformis, uncialis, 



V. fere sesquiuncialis. Stigma bilobum : lobis lingulatis, 



obtusis, pruinosis, compressis. Achenia turbinata, undique 



adpress^ villosissima. Pappus fulvus, deciduus : radiis 20 



circiter, vald^ plumosis, inaequalibus, imd basi in annulum 



connatis : rachibus setaceis, infern^ gradatim crassioribus, 



apice tenuissimo, simplici. 



Such is the description of authentic specimens of UcrccrAza 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 Chiiqiiiraga. 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 



