286 Mr. D. Don’s Descriptions of new Genera and Species 
segmentis lineari-ensatis, strictis, margine conniventibus, 
cartilagineis, apice acutis, ints canaliculatis, dense seri- 
ceo-villosissimis, penicillatis, denique glabratis: tubo cylin- 
draceo, vix fauce dilatatà, extùs et intüs copiosé sericeo-vil- 
loso, substantiá crassiore, limbo feré dupló 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 : 
filamenta libera, complanata, glabra, inferné ferè mem- 
branacea, nervo manifestissimo, canaliculata, basi dilatata, 
corolle imo tubo adhærentia ; articulo superiore dupló 
angustiore, 5-pló breviore: anthere in tubum connate, 5 
lineas longz, appendicula lineari-ligulatà obtusá membra- 
nacea, ipsa antherá dimidio longiori coronatz, basi bise- 
tosz : setis callosis, strictis, ineequalibus, interiori latere 
leviter canaliculatis, extremitate filamentosá, spirali, nunc 
retrofractà v. revoluta, deciduá! Stylus filiformis, uncialis, 
v. fere sesquiuncialis. Stigma bilobum: lobis lingulatis, 
obtusis, pruinosis, compressis. Achenia turbinata, undique 
adpresse villosissima. Pappus fulvus, deciduus: radiis 20 
circiter, valdé plumosis, inzequalibus, imá basi in annulum 
connatis: rachibus setaceis, inferné gradatim crassioribus, 
apice oed cd sim Mic. - 
Such i is i5 dec PEE of BE specimens. sat ee 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, 
thak: this eed had been referred to Bacasia by the above-men- 
d botanists from habit alone, without any regard to the struc- 
ower, as the slightest examination pii have con- 
vinced C" of the i incorrectness of that arrangement. Cavanilles 
seems 
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