FAMH.LE DES SYNANTHÉRÉES. 29 



une partie supérieure semi- conique ^ pubescente à 

 la surface externe. 



Section I. ASTÉRiÉES-SOIiIBAGlNÉES Gass. 



Capitules radiés ou subradiés; couronne jaune. 



Xanthocoma Kunth. — Xerothamnus De Cand. — Ana- 

 glypha De Cand. — Gymnosperma Less. — Brachyris 

 ^utt. (Brachyachyris Spreng.) — Hemiachyris De Cand. 



— Lepidophyllum Cass. — ? Gutierrezia Lag. — Grin- 

 delia Willd. ( Demetria Lag. Donia R. Br. Grindelia et 

 Aurélia Cass. Grindelia et Donia Desfont. ) — HeterO' 

 theca Cass.^ ( Calycium Elliot. Diplocoma Don. ) — 

 Aplopappus Cass. (Diplopappus Less. ) — Rochonia De 

 Cand. — Steiractis De Cand. — Amphirhapis De Cand. 

 — Solidago Linn. ( Virgaurea Tourn. ) — Euthamia Cass. 



— Chrysopsis Nutt. ( Diplogon Rafin. non R. Br. ) — 

 Neja Don. >— Homochroma De Când. '— Nidorella Cass, 

 — Microglossa De Cand. — Psiadia Jacq. — Elphegea 

 Cass. — ? Woodvillea De Cand. — Erato De Cand. — 

 Sarcanthemum Càss.-^ Glyphia Cass. (Glycideras Cass.) 



Section II. astérées-baccbaribées Gass. 



Capitules incouronnés. 



Paxihyderis Cass. — Scepinia Neck. (Pteroniaet He- 

 nanthus Less. ) — Pteronia Linn. ( Pterophorus Vaill. 

 Cass. Pterophora Neck. ) — Nolletia Cass. — Linosyris 

 Lob. (Crinataria Cass. Crinata Mœnch. ) — Chrysocoma 

 Linn. — Pyrrocoma Hook. — Bigelowia De Cand. 

 ( nec alior. ) — Fresenia De Cand. — Blepharispermum 

 Wight. — Athroisma De Cand. — Sphœranthus Vaill. 

 -—Polypappus Less. — Sergilus Cass. — Baccharis Linn. 



— Tursenia Cass. — Fimbrillaria Cass. 



