of the Class Composite. 299 
Nomen ad receptaculum crebré paleatum refert, a màcos refertus, 
et kapos palea. 
1. P. revolutus. 
In Chili ad Coquimbo. Caldcleugh. h. 
- This curious and well-marked genus has been referred to the 
Jungee entirely from its similarity of structure in the parts of 
fructification: for its habit certainly indicates no affinity to 
Jungia, unless we regard the stipule-like appendages of the 
leaves of Pleocarphus and some species of the former genus as 
pointing out a connexion. 
Trib. 3. Porvacuvnrx. Receptaculum paleatum. —Flosculi 
uniformes, hermaphroditi, bilabiati.: Stigmata. linearia, 
truncata, apice papillosa. Achenia difformia.. Herbe foliis 
pinnatifidis. 
a. PAPPO DIFFORMI. 
pe . Porxacuynus. | Lag. et. De. 4 inst 
I wootseelia T totraphy lie biflora, in capitulum congregata. - Flos- 
culi inæquales. Pappus flosculo interiori elongatus, plu- 
mosus. 
Capitulum compositum, globosum, basi squamis aliquot ovato- 
lanceolatis mucronatis rigidis munitum.  Involucella plu- 
rima, tetraphylla, biflora, paleis ovato-lanceolatis, mucro- 
natis, lanugine interstinctis interjecta : foliolis imbricatis, 
oyali-oblongis, apice pmarginhto-tupcatig, scariosis,. colo- 
E hermaphr j labiat à, ir quales | (exteriore mi- 
nore) ; labio exteriore ligulato, obtuse tridenticulato, patu- 
lo; interiore profunde bipartito : laciniis lineari-lanceolatis, 
acutis, spiraliter revolutis. Anthere appendiculà lineari- 
| lanceolata 
