204 Mr. D. Dow's Descriptions of new Genera and Species 
purpurei: nervis infra sinus laciniarum dichotomis. Pappus 
niceus. 
1. A. formosa. 
In Mexico. Sesse et Mocinno. ņ . 
This genus agrees with the preceding in the structure of its 
involucrum, and with Trizis in the indefinite number of its 
florets; but it is distinguished from both by its naked recep- 
tacle, and from Clarionia by the structure of its pappus, by its 
equal florets, as well as by its widely different habit. 
I have dedicated this very distinct and interesting genus to 
Mrs. A’Court, of Heytesbury House, Wilts, whose botanical 
taste and knowledge have long merited for her this compli- 
ment. 
Crarionia. Lag. et Dec. 
| Pznzzia. Lag. Amen. Nat. 1. p.81. 
Receptaculum nudum.  Flosculi indefiniti. Pappus capillaris. 
Involucrum polyphyllum, imbricatum. 
Involucrum oblongum, cylindricum, multiplici ordine polyphyl- 
lum, imbricatum. Receptaculum nudum. Flosculi omnes 
: heamaphroditi, bilabiati; marginales majores, radium emu- 
j exteriore longo; cate emesis obtusé tri- 
interiore profunde bipartito : : segmen- 
raliter ses obti aee matgihe Mica uis uti sæpiùs 
perfacilé pro unico et simplici habitis; disci multoties bre- 
viores ; labio exteriore elliptico, concavo, obtuse tridenticu- 
ee Jato; interiore bipartito, spiraliter revoluto : segmentis simi- 
.. liter con Bitinatio. at latioribus. Filamenta capillaria, gla- 
, articulo manifesto. dene: appendicula lineari, acuta, 
COMER : calico 
