364 COMPOSIT.-E. HtnuzoHia. 



§ 2. Fertile aktnes slii/hlli/ oblique caul with depressed terminal areola Uardly erreu- 

 tric, (jlahrous, smooth and even, vbovate and obscurdy triangular, inserted btj 

 a minute injlexed stipe, mostly in two series : heads {corymbose) inany-Jlowered, 

 and toith conspicuous strongly 'S-lobed rays {exjHinding in sunshine) : receptacle 

 convex, c/iajfy Ihrouifhoul, the inner ch{l)' very thin : disk-akenes abortive, desti- 

 tute of pappus. — KuuEMlzoNiA, Clmy. (Jlemizonia, DC, as to tlio typical 

 sj)ecies of both sections.) 



10. H. congesta, DC. yomewhat corymbosoly or pauiculately braiicluHl 

 above, a foot high, lathcr villous than hirsute with long mostly soft hairs, slightly 

 glandular towards the suiuiuit : leaves linear or linear-lanceolate, entire, or tlie 

 lower (commonly oppositti) oblanceolato aiul sparsely serrulate : heads rather few : 

 sciiles of the involucre with lanceolate foliaceous tips : outer series of chalf of the 

 receptacle somewhat similar to the scales ami distinct or partly united : rays light 

 yellow. 



Low ground, in the western part ol' the States Douglas, &c. Head, including the expunded 

 broad rays, about an inch in diameter. This ypccies is insufficiently known. Some specimens 

 which have been referred to it prove to have white rays, and to be a less glandular and more 

 villous form of the next ; from which, however, the yellow llowers ought to distinguish the 

 present species. 



11. H. luzulaefolia, DC. Corymhosely or iianimilately much branched, a span 

 to 2 feet high, villous, or below lloccose-woolly when yi»ung, above becoming very 

 glandular and viscid : leaves linear, entire or merely denticulate, the lower elongateil 

 and 3 - 5-uerved : heads numerous, middle-sized or small, mostly on short naked 

 peduncles : scales of the involucre with short herbaceous tips : outer series of chaff 

 united into a cup : rays (6 to 10) and disk-flowers white, sometimes tinged with 

 pink. — //. sericea. Hook. & Arn. //. rudis, Benth. Bot. Sulph. ; a much-branched 

 summer state, witli small heads and small very glandular upper leaves ; the long 

 and silky-woolly Luzula-like lower leaves gone. 



Dry open grounds, common throughout all the western part of the State, and very variable, 

 especially in the size and number of flowers in the head ; blooming continuously from April 

 or even March till Novemk'r. Involucre from 5 or (5 to 2 lines hi<;li : mvs from 5 to 2 lines long, 

 broadly cuneiform. The var. frwjarioidcs, Kellogg, I'roc. t'alif Acad. ii. 70, fig. 14, apjiear-s 

 not ditferent from the ordinary form of the sjjecies, but is said to have "the refreshing odor of 

 strawberries." 



§ 3. Akenes of dish mostly tvell-formed and sometimes the outermost truly fertile {then 

 hairy), tnrbinate-quadrangular or slightly obcompressed, straight, furnished 

 ivith a conspicuous chaffy pappus ; of the ray obovoid-triangular, slightly 

 oblique, and (he terminal areola little if at all eccentric: rays 1 to 7, vei-y 

 broad, palmately 'S-lobed or parted : heads narrow, small .• receptacle small 

 and Jlat, the herbaceous chaff only between the ray- and disk-Jlowers : leaves 

 entire and narroiuly linear with revolute margins, or filiform, or those in 

 axillary fascicles and clusters about the heads subulate, but obtuse, commonly 

 tiprped, and sometimes beset on the back, with disk-like or when dry saucer- 

 shaped and either sessile or short-stipitate glands {tvhence the name). — Caly- 

 CADENIA, Gray. {Calycadenia, DC.) 

 * Diffusely paniculate-branched : branches fiUform : chaff of the receptacle united. 

 ■^ Disk-shaped glands none : ray-akenes apiculate at both ends, rugose. 



12. H. tenella, Gray. A span to a foot high, minutely glandular, also sparsely 

 liispid when young : leaves linear-filiform, the lower an inch or two long, upper- 

 most reduced to filiform bracts : heads terminating the very numerous and widely 

 spreading filiform branchlets, cylindraceous : rays 3 to 5, white, 3-paited down to 

 the long and slender tube ; disk-flowers 5, white marked with purple : ray-akenes 

 glabrous, rugose, raised on a short stipe and tipped with a short and thick truncate 



