90 



27. COMPOSITE. 



anthers blunt at base : receptacle 

 conical, scaly. 



1. Galinsogra parvifiora., 



Cav. Erect, almost glabi'ons an- 

 nual: stem branching trichoto- 

 nmusly ; leaves opposite, lanceo- 

 late to oval, 3-nerved, faintly 

 toothed, very shortly stalked ; 

 involucre hemispherical, bracts 

 5, with 2 bracteoles at base ; 

 scales of receptacle mostly trifid 

 and 3-nerved ; heads small on 

 lon<5, slender terminal or axillary 

 peduncles ; central flowers numer- 

 ous yellow, outer floAAers 5, with 

 white almost circular rays; ripe 

 akenes angular, black, downy, 

 tapering at base, those ot the 

 ray crowned by a few bristles, 

 those of the centre with a pap- 

 pus of 14-22 plumose scales. 



Cultivated land. Waterfall 

 Gully. -Most of the year.— South 

 America. 



Ain iiKihiuiii ahifinii, 1?. Br. A handsome "everlasting" 

 from New South \Yales, with large yellow heads of 



Galinsoga parvif^ora. 



tubular flowers; white. 



spreading, petaloid, involucral 

 bracts ; long radical leaves and 

 small stem-leaves with decurrent 

 wings, has appeared on the road- 

 side near Summertown. — Dec. 



Outer involucra 

 <i\(M'la])ping, with 

 iug appenda 

 spine, 

 edges 



SiLVBUM, Adanson. 



bracts broad, 



stiff, spread- 



es ending in a long 



and spinulose along the 



at the base ; flowers all 





Silybum Marianurrt. 



tui)ular; stamens with united 

 lilaments; akenes oblong, com- 

 pressed, crowned by an erect 

 l)order and horned in its centre ; 

 pappus deciduous, of simple 

 hairs; receptacle bristly between 

 the llowers. 



1. Silybum IVIarianum, 



Cia-rtn. MiJk Thistle Stout 

 erect, often tall biennial, glab- 

 rous or nearly so ; leaA'es glossy 

 aud whiteveined above, more or 



