ASTERAC 'I 



antho«, !' 



(Gr. helios, 



1. Disk brown or purplish 



a. Leaves opposite, thii k, lai 



b. 1 eaves mostly alternate, tl 



in the cultivated forms 



2. Disk yellow 



a. I eaves long, mostly lam e shaped 



(1) Leaves petioled ; stem glaui ous 



(2) Leaves sessile 



i a I Stem smooth 

 (b) Stem rough 



x. I.. -axes mostly enlin . Ided 



y. Leaves toothed, flat 



b. Leaves ovoid 



( 1) Stem smooth or soft hairy 



(2) Stem rough or bristly hairy 







Leaves 



1 telianthella— Alpine Sunfl 



< A Greek-Latin hybrid, meaning 

 long; heads 5-10 cm. wide, yellow //. 



(Gr. helios, 

 Leaves ovate; rays pistillate, yellow 



1 [eliopsi — i Ixeye 



i, opsis, look, from tin 





Solidago -I lolden-rod 



(Lat. soiidus, whole, fn m Its reputi 



1. Heads in a fla( topped cluster 



a. Kays fewer than the disk flowers 



(1) Leaves ovate to oblong, rough 



(2) Leaves long, lanceolate, smooth 



b. Rays more numerous than the disk flov 



2. Ili-ads in a terminal much-branched conical cluster 



a. Stem and leaves glabrous <>r nearly su 



(1) Heads in a compact rounded thyrse 



(2) Heads in one-sided spreading clusters 



(a) Leaves 3 nerved 



x. Tall, 1-2 m. high ; along streams and !■ 

 v. Low. ! ■ in. high; on prairies and plains 



(b) Leaves without a strong pair of later..! 

 x. Racemes few ; heads 4 6 mm. high 



v. Racemes many; head- 3-4 mm. high 



b. Stems and leaves hairy 



( 1 ) Leaves lam i olate, serra . long pointed 



(2) Leaves oblanceolate to broadly span.' 



(a) Leavt - green, rough on both - 



(b) Leaves graj or ash) 



x. Leaves faintly 3 nerved 

 v. Leaves strongly 3 nerved 



3. Heads mostly in axillary clusters 



a. Kays white ; leaves hairy, Munt 



b. Rays yellow ; have- smooth, long ; 



i 











Chrysopsis 



chrysos, gold, epi • 



Leaves hairy, 





