388 Linncean Society. 



Zoological Society, in future Numbers,) are also added. To the 

 Cichoracece, of which the number is very limited in the South Ame- 

 rican Flora, five new species, two of them constituting the types 

 of new genera, are described in the present paper. The Composites 

 in the new continent, it is remarked, are nearly double the number 

 of those in the old. The Vernoniece, Jacobece, and Labiatiflora, ap- 

 pear to be the most extensive families in the South American, and 

 the AstereiP, Eupatorece, and Helianthecc in the North American 

 Flora. Further observations on the geographical distribution of the 

 Composite, and an alteration in the description of the Class contained 

 in the former communication of the author, conclude the introduc- 

 tory portion of this paper. Of the Descriptive Catalogue itself the 

 following is an abstract : 



Fam. I. CICHORACECE. Linti. Trans. 16. p. 173. 

 Dendroseris. 

 Receptaculuin nudum. Pappi radiis triplici ordine subsetaceis, 

 scabris, caducis. Involucrum polyphyllum, imbricatum ; foliolis 

 intimis elongatis, radiatis. 

 1, D. macrophylla. 



MiCROSERIS. 



Receptaculum nudum. Pappi radiis simplici ordine paleaceis, arista- 



tis, persistentibus. Involucrum simplex, basi bracteolatum. 

 1. M.pygnuBa. 



Oreophila. I. c. 16. p. 178. 



1. O. taraxacoides, foliis radicalibus runcinatis, involucri squamis 

 interioribus acuminatis, caule unifloro. 



2. O. picroides, hispida ; foliis runcinatis, involucri squamis omnibus 

 ligulatis obtusis, caule ramoso. 



3. O. apargioides, glabriuscula ; foliis radicalibus runcinatis, invo- 

 lucro tomentoso, paleis aristatis, caule subsimplici. 



Fam. II. LABIATIFLORiE. Linn. Trans. 16. p. 184. 

 Trixis. I. c. 16. p. 186. 



1. T. papulosa, glanduloso-pubescens ; foliis sessilibus lanceolatis 

 mucronatis integerrimis, floribus bracteatis, involucri squamis lan- 

 ceolatis acuminatis. — Herb. Gillies. 



2. T. discolor, foliis lanceolatis acuminatis denticulatis subtiis niveo- 

 tomentosis, floribus corymboso-paniculatis, involucri squamis li- 

 neari-lanceolatis acuminatis. — Herb. Gillies. 



Clarionia. I. c. p. 204. 



1. C. pilifera, subacaulis ; foliis subpinnatis glabris : segmentis de- 

 cussatis ellipticis bilobis aristatis, involucri squamis lanceolatis 

 aristatis margine scariosis. — Herh. Gillies. 



2. C. carthamoides, foliis radicalibus bipinnatifidis crispatis margine 

 spinulosis, involucris foliaceis imbricatis, caule unifloro. — Herb. 

 Gillies. 



3. C. pungens, foliis indivisis; radicalibus petiolatis spathulatis 



caulini 



