400 CUMPUSlT.ii. Ptclis. 



California, Coulter, No. 330. Arizona, Dr. Palmer. Invohiure 2 or 3 lines long ; the whole 

 head 4 or 5 lines long, rather lew-liowercd. 



3. P. iilipes, <^Jiay, 1. c. Annual, slender and dill'use, glabrous : leaves narrowly 

 linear (an iueli i)r ni(»ro lunj,', buldoni u lino wido), simrin<>ly briatle-IVinj^'od at haso : 

 |iiti|iiii('l(M i'.ii|iilliii'y, tiiKt til' (wo iiK'hcH ion^: mciiIch ui' tlio invulucri) fi, nillicr Itrtimlly 

 linear, obtuse : rays t;.\.serLoil, oblong' : diHli llowers about 5 : nkenes slender : jiapiius 

 of ubout 2 (1 to 3) slender awns wliieli are gradually sligbtly dilated at base and 

 minutely scabrous towanls tbe apex, in the disk sometimes a minute crown with a 

 solitary awn. 



California, Coulter, No. 329. New Me.xico, Thurber, BU/elow, Henry. Janos, Chihuahua, 

 Schott. Involuerc narrow, 2 to 2^ lines long. Only Coulter's plant shows the sliort crown of 

 the ilisk-pajipus. There is no trace of it, and the awns are 2 or 3, in the other specimens, which 

 are from a district farther cast than that probably traversed by Coulter. Bentham thinks it 

 likely to be F. Taliscuna, Hook, k Am. ; but it does not accord with the character of that 

 species. Probably it has not been collected within California. 



Tuiiib; VII. A^'TIIEMIDE.E. 



Distinguished from JJclenioidew by the drier nu)re scariously margined or tipped 

 and imbricated siudt^s of the involucre ; from Astenndeie by the same and by tho 

 truncate tijis of tho style in the perfect lloNvers, never continued into an apjieudagft ; 

 tho pa[)pus none or a mere crowji. Belonging mainly to the Old World, very few 

 in Western Noith America, except of Artemisia. 



89. ACHILLEA, Linn. Yaiiuow. 



Head numy-llowered, with few or several pistillate rays ; all tho llowera fertile. 

 Scales of the narrow involucre imbiicated in iaw series, aj^pressed, mostly Avith 

 scarious margins, itcceptaclu from llattish to conicid, with thin chaif Mubtending 

 the llowers. J fays mostly short or broad. Akenes oblong or obovate, obcomi)ressed, 

 surrounded by a narrow and cartilaginous margin, ilestitute of pappus. — Perennial 

 herbs {numerous in the Old AVorld, but very few in the New), rather strong-scented; 

 with alternate either serrate or i)innately dissected leaves, and small corymbo.se 

 beads of yellow or white or sometimes rose-colortnl flowers. 



1. A. Millefolium, Linn. A foot or two high, or lower on mountains, villous- 

 woolly at least when young : leaves lanceolate or linear in general outline, twice 

 pinnately parted into line linear acute and 3 - 5-cleft lobes: heads small, crowded 

 in a compoiuid corymb-like cyme : rays 4 or 5, obovat(i, white, rarely rose-color 

 (occasionally becoming tubular) : akenes slightly margined. 



Common in the Sierra Nevada up to 11,000 feet, extending through nil the mountain.s north- 

 ward and eastward ; not rare in the western )»art of tlie State at tlie level of the sea ; there 

 Itcrliaps introduced fnun the Old World ; liut ili;uiy indigenous all round the northern hemi- 

 sphero. 



00. ANTIIEMIS, l.uui. Cii.vMuMii.K, 



Head many-llowered, with numerous pistillate or sometimes neutral rays; tho 

 «lisk-flowers fertile. Involucre hemispherical ; the scales very numero\is, imbricated 

 and appressed, scarious-margined, with a more rigi<l centre. Receptacle from con- 

 vex to oblong-conical, chaffy with slender or thin scales or awns, sublending the 

 ilowers, at least the central ones. Uays commoidy conspicuous. Akenes obovoid 

 or oblong, 4-r)-angh!d, S-10-ri]>bed, or many-striate, truncate at the ai)ex. Pappus 



