CLASS XVII. ORDER II. 363 



membrane formed by the united filament, has a fissure on the back : style 

 curved ; legume pedicelled, turgid. 32. 93 (rattle box). S. 



CLASS XVII. SYNGENESIA. 



ORDER. I- POLYGAMIA 



A. Florets ligulate. 



CICHO'RIUM. Calyx calycled ; egret plumose, sessile, unequal (Torrey) ; 

 many-leaved, chaffy (Persoon) ; receptacle somewhat chaffy. 49. 53 

 'succory or endive). 



LEON'TODON. Calyx double, imbricate, with flexible leafets ; receptacle 

 naked; egret stiped. 49. 53 (dandelion). S. 



PRENAN"THES. Florets from 5 to 20, in a simple series (or in one circular 

 row) ; calyx calycled ; receptacle naked ; egret simple, sub-sessile. 49. 53 

 f white lettuce). S. 



LACTU'CA. Calyx imbricate, cylindric, with the margin of the scales mem- 

 branaceous ; receptacle naked ; egret simple, stiped ; seed smooth. 49, ^3 

 'lettuce). "<S. 



HIERAC"IUM. Calyx imbricate, ovate ; egret simple, sessile ; receptacle 

 naked, punctate, or sub-pilose. (From white becoming yellowish). 49.53 

 (hawk -weed;. S. 



Exotic. 



TRACOPO'GON. Calyx simple, many -leaved : receptacle naked ; egret plu- 

 mose and stiped. 49. 53 (goats-beard, vegetable oyster) . 



B. Flowers tubulous : flower capitate. 



ARC"TIUM. Calyx globose, with scales hooked at the apex : egret-chaff- 

 bristly : receptacle chaffy. 49. 54 (burdock). S. 



CNI'CUS. Calyx swelling, imbricate, with prickly scales ; receptacle vil- 

 lose ; egret caducous, plumose. 49. 54 (thistle.) <S. 



CAR"DUUS. Calyx ovate, imbricate with prickly scales ; receptacle Villose ; 

 egret pilose. 49. 54 (comb-tooth thistle). 



Exotic. 



CAR"THAMUS. Calyx ovate, imbricate with scales, pvatish leafy at the 

 apex ; egret chaff hairy or none ; receptacle chaff bristly. 49. 54 (false 

 saffron). 



CYN"ARA. Receptacle bristly ; calyx dilated, imbricate', scales with fleshy 

 bases, emarginate and pointed ; egret plumose, sessile. 49. 54 (garden ar- 

 tichoke). 



C. Florets tubulous ; flower discoid. 



EUPATO'RIUM. Calyx imbricated (rarely simple) oblong ; style long cloven 

 half way down : egret pilose, scabrous, or rough papillose ; receptacle naked ; 

 seed smooth and glandular, 5 striate. 49. 55 (boneset, thoroughwort, joe- 

 pye). .S'. 



MIKA'NIA. Calyx 4-6 leaved, 4-6 flowered ; receptacle naked ; egret pilose. 

 49. 55. S. 



ORDER II. POI.YGAMIA SFPERFLUA. 



A. Flowers discoid ; the ray-florets being obsolete. 



TANACE'TUM. Calyx imbricate, hemispheric ; scales acuminate ; rays obso- 

 lete, 3 cleft ; egret somewhat marginal ; receptacle naked. (Flowers corymbed.) 

 19 55 (tansey). 



ARTEMI'SIA. Calyx imbricate, ovate, with scales rounded, converging; 

 ray florets subulate ; egret ; receptacle somewhat villose, or nakedish. 

 'Flowers mostly rounded). 49.55 (wormwood, southern-wood). <S. 



GNAPHA'LIUM. Calyx imbricate with the marginal scales rounded, scafious, 

 shortish, glossy, coloured ; receptacle naked ; egret pilose or plumose, scabrous; 

 florets of the ray subulate, of the disk entire. Sometimes all the florets are 

 perfect. 49. 55 (life everlasting). S. 



B. Flowers radiate : the ligulate ray florets very manifest. 

 (Receptacle naked.) 



ERI'GERON. Calyx imbricate, sub-hemispherical ; florets of the ray very 

 numerous and narrow : receptacle naked ; egret double : outer minute ; inner 

 hairy, of few rays. 49.55 S. 



IN"ULA. Calyx imbricate, generally squarrose ; egret simple, scabrous, 

 sometimes a minute, exterior, chaffy one ; anthers ending in 2 bristles at the 



