I'Jvax. COMI'USIT.K ,S37 



§ 1. Feiiile flowers numerous; (heir chafl)/ siihtendiiKj sca/rs iinhricnfrd in. vuiny 



series in an ovoid head, thin, wholly or jiarthf hi/aline, those next the sterile 



flowers narrower but similar : jmpjms rommonli/ presott to the sterile floivers. 



— EusTYLOCLiNE, Gray. [Stylocline, Nutt.) 



1. S. gnaphalioides, Nutt. A span or less in lioiglit, loosely wliito-woolly, 

 diffusely brancheil : leaves broadly linear or the u]){)er oblonjf, obtuse (barely a 

 quarter of an inch long) : fructiferous scales lightly woolly on the back, broadly 

 ovate, a firmer central portion at the base saccate and enclosing the akeno ; the 

 remainder barely concave and hyaline. — Pacif. K. Koj). iv. 101, t. 13. 



Open grounds, from tlie Stanislaus to Monter<\v, NuUa/l, Andrews, Uigr.low. Seldom collected ; 

 apparently not common. 



2. S. micropoides, Mray. Lower : leaves linear and .somewhat lanceolate, 

 acute : fructiferous scales ovate, with the whole lower jjortion boat-shaped and 

 involving the akene, very woolly on the back, except the upper expanded hyaline 

 ]wrtion. — PI. Wright, ii. 84. 



Southeastern borders of California on the Colorado River {Ncicbcrry), and tlnough Arizona and 

 New Mexico. 



§ 2. Fi-rtile flowers 5 to 10; their chaffy scales in not more than two series, boat- 

 shaped and involving the akene, of firm membranaceous texture and with a small 

 hyaline tip, as in Fsilocarphus ; the 5 uppermost scales sterile and larger, 

 forming an involucre round the sterile flowers, herbaceo-coriaceous, open, tapering 

 into a rigid incurved hooked cusp, persistent and at length stellately spreading. 



— ANCiSTROOARrnus, Gray. 



3. S. fllaginea, Gray, 1. c. A span or less liigli, slender, erect, canescent with 

 line and appresscd wool : leaves narrowly linear or somewhat dilated upward : invo- 

 lucre outside of the woolly fructiferous scales obscure or none : pappus to sterile 

 Howers none. — Ancistrocarphus fllagineus. Gray, Proc. Am. Acad. vii. 350. 



Mendocino Co., at Round Valley, Eel River, Bnlandrr. Tliis curious little plant has the 

 aspect of Filarfo Gallica : the heads are inconspicuous : the most prominent parts when developed 

 are the rigid sterile scales (about 2 lines long) with their hooked tips, adapted to attach the 

 small plants, at maturity, to the fleece of. sheep or the coat of cattle. 



32. EVAX, G.ertn., subgenus HESrEREVAX, Gray. 



Head discoid, many-flowered; the pistillate flowers with fdiform corolla in sev- 

 eral series on a convex villous and centrally elevated columnar receptacle, each 

 subtended by an ovate barely concave chartaceous chaffy scale : hermaphrodite but 

 sterile flowers several (G to 10) on the upox of the column of the receptacle, in- 

 volucrate by a whorl of 3 to 5 thicker chaffy scales. Scales of the involucn> 

 few and resembling the chaff of the receptacle. Akenes obovate-oblong with a 

 narrowed base, fltraiglit, more or loHa enn»profl.'=io(l paraliiO to the flubtending chair, 

 very smooth. I'appus none. — G-ray, in Pacif. K. Pej). iv. 101, t. 11 ; Proc. Am. 

 Acad. vii. 350, & viii. G51. 



Evax is an Old-World genus, to which is appended this peculiar Cnlifornian tyjie, apparently 

 of a single species. 



1. E. caulescens, Gray, 1. c. Loav annual, one to three inches high, branching 

 from the base, densely white-woolly : leaves spatulate, with blade a (piarter t^ 

 nearly an inch in length, tapering into a slender petiole : heads incimspicuous in 

 sessile terminal or axillary clusters, or solitary, a line or two in length : chaffv scales 

 of the receptacle becoming rigid, those surrounding IIk! sterile flowers thicker and 

 woolly inside. — Fsilocarphus caulescens, Benth. PI. llartw. 319. 



