234 Mr. D. Dox’s Descriptions of new Genera and Species 
1. C. ciliata. 
Cheetanthera ciliata. Ruiz et Pavon Syst. Veg. Fl. Peruv. et 
Chil.1. p.190. Gen. t. 23. 
In Chili collibus et campis versus Gnilquilenm oppidum 
copiosc. Ruiz et Pavon. ©. 
Chetanthera 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. 
 Prosetia. | 
CHETANTHERE sP., Ruiz et Pavon. 
Prsnpnicrir sr., 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. Flosculi radii plures, foeminei, bilabiati, 
staminibus sterilibus ; labio exteriore amplo, ligulato, 4-ner- 
vio, obtuse tridenticulato, subtüs sericeo-villosissimo ; inte- 
riore tenuissimo, bipartito: segmentis primó margine con- 
. glutinatis, inde unicum simulantibus, binerviis apice in filo 
. longo, spirali attenuatis ; disci hermaphroditi, tubulosi, limbo 
bilabiati ; labio eateriore elliptico, obtuse tridentato ; inte- 
riore lanceolato, bifido. Anthere appendiculá lineari acuta 
cartilagineá 
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