366 COMPOSIT.E. Iltmizoniii. 



to 20 : chair of receptacle more or less distinct, truncate : ray-akenes as in the piu- 

 ceiling : pappus ol' tliost* of tliu disk wliort and awnli^s ; tlio scales 7 to 1(>, i)ljlt)ng, 

 incisely or iiinbriatcly Lootliod, very nmcii shorter than the akoue, rarely wanting. 

 — C'uli/cacltnia truncdtu, HC. 

 Dry grouml, Vulluy ol' lliu Sucruiiunito to Momlociuo Co., iu, 



-J- -t- -f- Setose-hirsute or hispid, at least on the margin of the leaves or bracts : heads 

 sessile or nearly so, and often clustered in the axils and at the summit of the stem : 

 short-stipitate or almost sessile saucer-shaped glands at the tips of the upper and 

 fascicled leaves, bracts, d;c., and often on their sides. 



17. H. Douglasii, Gray. Slender, a span to a foot or so high, more or less 

 liii-suto or hispitl with white bristly hairs, especially on the margins towards the 

 base of the almost lilitbrm leaves : heads solitary in the axils : " Uowers yellow " : 

 pappus of 10 subulate awn-pointed chatl'y scales, or some of them shorter and 

 truncate or obtuse. — Calycadenia villosa, D(J. 



Open grouiula, i)i the western jKut of the Stiite, Valley of the Sacramento, &c. Collected in 

 "Long Valley" by Dr. Kellogg, who notes that the "(lowers are yellow," probably pale. Glands 

 few or somethnes none except the terminal ones. Rays 3 or 4 ; disk-flowers 5 to 10. Except in 

 the slenJerness, the scattered solitary heads, and, if constant, the "yellow" flowers, it is difh- 

 cult to distinguish this from forms of the next. The .specific name, villusa, which is hardly ever 

 appropriate even in Cali/cadcniii, may give way in the trunsfericnce to JJcinizuiiia. 



18. H. multiglandulosa, (Jray. A span to 2 feet high, more or less hirsute and 

 liispid, especially towari-ls the ba.se of the almost lilitorm leaves : stipitate glands mostly 

 present and often copious on the upjier leaves, bracts, involucral scales and united 

 chalf : heads solitary or clustered in the axils, and connnonly capitately or spicately 

 crowded at the summit of the stem : llowers white, sometimes tinged -with rose- 

 color : pappus of 10 or 12 chalfy scales, either all or about half of them subulate- 

 acuminate or awn-i)ointe(l, the others short and pointless. — Cali/cadenia multiglan- 

 dulosa &, C. cephalotes, I)C. ; Torr. & Gray : the former a state with scattered heads 

 and very copious tack-shaiied glands ; the latter with heads all or most of them 

 capitate-crowded at the siunmit. 



Open dry grounds ; common through the western part of the State. No reliance can be 

 placed upon the abundance or rarity of the glands, the crowded or more scattered heads, nor the 

 j)ubeseence of the al<encs, in tfiis and the preceding species. Tlie ray-ovaries are rarely ([uite 

 glabrous, conmionly a little hairy at toj), or s|iarsely so throughout. The scales of the pappus 

 aie sometimes all alike an<l subulate or awn-pointed, or some of them so ; but usually the alter- 

 nate ones are short and blunt. These characters are so mingled that varieties cannot well be 

 defined, at least with the present materials. 



§ 4. Akenes nearly as in § 3, hut more nearly equal-sided, acutely ]0-ne7-ved or ribbed, 

 all more or less hirsute and tvith depressed terminal areola, this bearing a 

 coroniform jxijipus in the ray, and a pappus of about 20 equal plumose awns 

 in the disk-akenes, only the central ones of the latter sterile. — ELtl'HAiuzoNiA, 

 Gray. 



19. H. plumosa, Gray. Two or three feet high, with the heads racemose- 

 paniculate along the virgate branches, somewhat setose-hispid and with line rather 

 viscid pubescence: caiilino leaves unknown; those of the flowering brandies all 

 short and bract-like, oblong, tipped and often spar.sely beset (as are the similar 

 scales of the involucre and the outer chalf of the rece|)ta{;Ie) with short-stipilate and 

 pale saucer-shaped glands : corollas " yellow " or more probably white ; those of the 

 ray 7 to 10, dee]dy and irregularly 3-lobed, of the disk 10 to 12. — Proc. Am. 

 Acad. ix. 192. Calycadenia 2^1 umosa, Kellogg in Proc. Calif. Acad. v. 49. 



A'^alley of the Sacramento. Sent from Stockton to Dr. Kellogg by an unknown collector. 

 Heads rather broad, 3 lines high, exclusive of the rays ; these with their short tube about 4 

 lines long. Receptacle flat or neariy so, pubescent ; its chaff of distinct scales in about two 

 series, the inner smaller. Ray-akenes fidly a lino and a half long, turbinate, with a more con- 

 tracted base, and a rounded summit having a rather small and not protuberant areola, bearing a 



