coMrosiT.E. 39 



a, Ileads witli ligulate marg-iuiil flowci-s; margiu-flower.s sauic 



col(jrc( l as disc-flowcrs SoUdago. 



/5. Ilcads witli 2 — oo — scrics of H- witli ligulate or filiformecl 

 corolla ; papjais sliort or 0. 



Fruit crowncd with a cup Grangea. 



Fruit uot crowued with a cu]) Didirocephala. 



y. Ilcads witli Jigulate margiu-flowcrs, whose colour is differeiit 

 from that of disc-flowers. 

 Pa])pus rcduccd or 0. 



Fruit Avithout sticky riug at the iii^ex...Lagenophoixi. 



Fruit with a sticlcs' ring at tlie apcx Blyriactis. 



Paii]>us setaceous or iu A. indivus iiearly reduccd. 

 luvohicral hracts more thau 2-series ; ray-flowcrs iu 

 1-serics, lauceolate ; ai)pcudage of stylc-l)ranches 



lanceolate Aster. 



luvolucral hracts ncarly 2-sericd, ray-flowers lincar 

 in mauy sories ; aj^pendage of style-hranches mostly 



short, triaugulav Erigeron. 



d. Hcads with flliformcd or short ligulate margin-flowcrs. 

 Pa])pus oo setaceous. 



Frui t uot e( tmjn-essed Microglossa. 



Frui t coni] ircssed Conyza. 



d. Heads honiogamous or heterogamous, the outcr ligidate. Auther- 



cclls (cxce])t Laggera) tailed. tStyle various Inulet^?. 



I. -^- flowers flliformed. 



1. IStvles of 51 flowei's with tlioroughlv hairv hranches. 

 Heads simplc, not collectcd iuto a head-likc clnster. 

 a. Paiti)us-scta3 oo. 



Herh with narrow iuvolucral l)racts. 



Anther tailed Blumea. 



Auther not tailcd Laggera. 



Shruhs with wide involucral hracts. Pluchea. 

 [•i. Papjius Lpaltes. 



