Ei-ax. COMPOSITE. 337 



§ 1. Fertile flowers numerous ; tlieir chajfy subtending scales imbricated in many 

 series in an ovoid head, thin, wholly or -partly hyaline, those next tlie sterile 

 flowers narrower but similar: pappus commonly present to tlie sterile flowers. 



— Eustylocline, Gray. (Stylocline, Xutt.) 



1. S. gnaphalioides, Xutt. A span or less in height, loosely white-woolly, 

 diffusely branched i leaves broadly linear or the upper oblong, obtuse (barely a 

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

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

 remainder barely concave and hyaline. — Pacif. R. Eep. iv. 101, t. 13. 



Open "rounds, from the Stanislaus to Monterey, Xuttall, Andrews, Bigclow. Seldom collected ; 

 apparently not common. 



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

 Vnj. acute : fructiferous stales ovate, with the whole lower portion boat-shaped and 



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

 portion. — PI. Wright, ii. 84. 



Southeastern borders of California on the Colorado River (Xewherry), and through Arizona and 

 New Mexico. 



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

 sha/inl anil in miring the akene, of firm membrannrinns texture awl with a small 

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

 forming an involucre round the sterile flowers, kerbaceo-coriaceous,-ojien, tapering 

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



— Ancistrocaephds, Gray. 



3. S. filaginea, I Iray, 1. c. A span or less high, slender, erect, canescent with 

 fine and appressed wool : leaves narrowly linear or somewhat dilated upward : invo- 

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

 flowers none. — Ancistrocarphus fUagineus, Gray, Proc. Am. Acad. vii. 356. 



Mendocino Co., at Round Valley, Eel River, Bulandcr. This curious little plant has the 

 aspect of Pilago Gallica .- the heads ore 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, Gffirtn., subgenus HESrEREVAX, Cray. 



Bead discoid, many-flowered; the pistillate flowers with filiform 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 Bowers several (6 to 10) on the apex of the column of the receptacle, in- 

 rolucrate by a whorl of 3 to 5 thicker chaffy scales. Scales of the involucre 

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

 narrowed base, straight, more or less compressed parallel to the subtending chaff, 

 very smooth. Pappus none. — Gray, in Pacif. K. Rep. iv. 101, t. 11 ; Proc. Am. 

 A nl. vii. 356, & viii. 651. 



/.' u; is an Old-World genus, to which is appended tlii-s j aliar Califomian type, apparently 



of a single species. 



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

 the base, densely white-woolly": leaves spatulate, with Made a quarl 

 nearly an inch in length, tapering into ;i slender petiole; heads inconspicuous in 

 sessile tennin.il or axillary clusters, or solitary, o line or two in length : chaffy scales 

 of the receptacle becoming rigid, those surrounding the Bterile Bowers thicker and 

 woolly inside. — Psilocarphus caulescens, Benth. PL Hartw. 319. 



