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



I.e. ciliata. 



Chaetanthera ciliata. Kuiz et Pavon Syst. Veg. FL Peruv. et 

 Chil. 1. p. 190. Gen. t. 23. 



In Chili collibus et campis versus Guilquilemu oppidum 

 copies^. Ruiz et Pavon. o . 



ChcEtanthera is here limited to the species on which the genus 

 was originally founded by Ruiz and Pavon. It is sufficiently 

 characterized by its involucrum, composed of a series of loose, 

 foliaceous, and nearly equal scales, and by its capillary pappus. 

 A comparison of the leaves and the scales of the involucrum of 

 this plant affords a most satisfactory explanation of the origin 

 of the latter. There being no sample of this plant in the col- 

 lections of Ruiz and Pavon, the above description has been 

 drawn up from a specimen presented to Mr. Lambert by 



Mr. Brown. 



Proselia. 



CniETANTHERai sp., Ruiz et Pavon. 



Perdicii sp., Willd. 



Involucrum imbricatum. Pappi radiis setaceis, simplici ordine 

 dispositis. 



Involucrum triplici circiter serie polyphyllum, imbricatum, cam- 

 panulatum : squamis adpressis, lanceolatis, mucronatis, inte- 

 gerrimis ; exterioribus gradatim minoribus. Receptaculum 

 planum, nudum. FloscuU radii plures, foeminei, bilabiati, 

 staminibus sterilibus ; labia exteriore amplo, ligulato, 4-ner- 

 vio, obtuse tridenticulato, subtiiis sericeo-villosissimo ; inte- 

 riore tenuissimo, bipartite : segmentis prim6 margine con- 

 glutinatis, inde unicum simulantibus, binerviis apice in filo 

 longo, spirali attenuatis ; disci hermaphroditi, tubulosi, limbo 

 bilabiati ; labia exteriore elliptico, obtusfe tridentato ; inte- 

 riore lanceolato, bifido. Anthera appendicuM lineari acuta 



cartilagine^ 



