104 COMMON CANADIAN WILD PLANTS. 



9. Taiiacc'tiiin. Flowers yellow, in numerous corymbed heads. 

 Scales of the involucre dry, imbricated. Pappus 5-lobed. 

 Leaves dissected. 



10. Arteinls'la. Flowers yellowish or dull purplish, in numerous 



small heads which are panicled or racemed. Scales of the 

 iiivoluere with dry and searious margins, imbricated. Achenes 

 with narrow top, 



*-**Pappu!! of all the florets bristly. Meceptacle naked. 



11. Ercchti'tes* Flowers whitish. Scales ,o/ the involucre in a 



singlerow, linear, with a few bractlets at the base. Corolla of the 

 marginal florets very slender. Pappus copious, of fine soft 

 white hairs. Heads corymbed. Erect and coarse herbs. 



12. Ciuaplia'lliim. Flowers whitish or yellowish. Scales of the 



involucre yellowish-white, in many rows, dry and scariovis, 

 woolly at the base. Outer corollas slender. Pappus a single 

 row of rough bristles. Floooulent- woolly herbs. 



13. Antenua'rla. Tery much like Gnaphalium in appearance, being 



white- woolly, biit the heads are usually diceclouSt and the 

 bristles of the pappus thicker in the sterile florets. 



+- -^ All the florets in 'the head perfect. 



13. Auteima'rla, with dioecious heads, may be looked for here. See 

 previous paragraph, 



ISidcus. Ono or two species -have no rays. See No. 41. 



Scuc'cio. One species is without rays. See No. 19. 



It. liia'tris. Flowers handsome, rose-purple. Receptacle naked. 

 Pappus of long and slender bristles, plumose or rough. A.chenos 

 slider, lO-ribbod. Lobes of the corolla slender. Stem wand- 

 like, leafy, from a corm or tuber. Leaves narrow cyr grass-Wee. 



15. Vcrno'iila. Flowers purple. Scales of the involucre (with us) 

 '.vilh slender bristly tips. Receptacle naked. Pappus double, 

 iho outer minute, the inner capillary. Branches of the style 

 long and slender, minutely bristly, 



IG. Giipato'rluiu. Flowers white or purple. Receptacle naked. 

 Pappus of slender hair-like bristles, smooth or nearly so- 

 Achenes 5-angled, Heads in corymbs. Leaves whorled, or 

 connate, or opposite. 



-t- -t- -»- MargiTial florets pistillate and fertile, those in the centre of 

 the head staTninate and sterile. Hzceptaclc chaffy. Pappus 

 wanting. 



