Coiycoscris. coMrusrjvK. 43 [ 



the middle ; the others much shorter ami less plumose or often quite naked. — A 

 single species. 



1. A. acaule, Torr. & Cray. A low, but showy, stemless winter-annual, gla- 

 brous at maturity, altliougli when young with sojno whito-woollinci.ss, which fringes 

 the edges of the short and ro8idat(;-tuftod runciiiate radi(;al leaves : scapc.s a span or 

 less high, naked : head propoitionally large (an inch or more long): corollas yellow. 

 — Torr. (^ (iray in Jour. Boat. Nat. Hist. Soc. v. Ill, t. 13 ; Eaton in JJot. King 

 Kxp. 197. PtfroHtcphnnua runciiiatHS, Kellogg in Troc. ('alif. Acad. iii. 20, lig. 4, 

 bailly characteri/(Ml. 



Dry itlaiiis and IiIIIh, fioiii Fort Tcjoii to tlio Colnrndo, ninl (Voiii Sinria Vulloy through Western 

 Novnda. First t-ollectod liy Frtmnnl. No <loid)t tliiH is Dr. Kcllogg'a ricroslcpluiniis, but it haa 

 no sucli akcties as are described and rudely depicted. 



114. GLYPTOPLEURA, D. C. Eaton. 

 Head 8-18-flowercd. Involucre cylindraccous, of 7 to 12 lanceolate thindierba- 

 ceous and somewhat scarious-margined equal scales, wdiich are united at base into a 

 cup and unchanged in fruit, subtended by a few loose calyculate scales or foliaceous 

 bracts. Receptacle flat, naked. Akenes narrowly oblong, mostly slightly incurved, 

 terete, not contracted at base nor hollowed at the insertion, with 5 thick and 

 rounded ribs or angles, which are obscurely rugose, but on their sides elegantly can- 

 cellate-sculptured, so as to present a row of pores in the narrow intervals ; above a 

 cup-shaped shoulder surrounds the base of a short and thick Cribbed beak or neck, 

 which is dilated at the apex into a pappus-bearing disk and hollow, at least at the 

 top. Pappus bright white, caducous, of very numerous and equal fine and hardly 

 scabrous capillary bristles in several series ; the outermost falling separately, the 

 inner slightly cohering in a ring at ba.se. — Small and depressed winter-annuals or 

 biennials (of the iiiterior desert), glabrous, many-stemmed, forming flat tufts oidy 

 an inch or two high ; the stems or simple branches terminated by sessile rather 

 largo heads of roso-purplo or white flowers ; the heaves runcinnto and mostly with 

 margined jielioles, tliickisli. — Eaton, IJot. King Kxp. 207, I. 20; llenth. t^ Hook. 

 Gen. ri. ii. 523 ; Gray, Troc. Am. Acad. ix. 209. 



1. G. marginata, Eaton, 1. c. ^Margins of the short and crowded lobes and 

 teeth of the leaves, or the whole of the obtuse teeth, Mdiito-scarious ; the uppermost 

 and the subtending spatidate bracts (which mostly equal the 1 Ti - 1 8-flowerod heads) 

 pectinately scarious-fringed : rays (always 1) small : akenes minutely cinereous, the 

 beak rather deeply cupped. 



Truckee Pass of the Virginia Mountains and elsewhere on the western borders of Nevada 

 {Wnison, Lemmon) ; therefore probably witliin the line of tlio State. A rurious ami most inter- 

 esting little plant. Heads rather over half on inch long, bnrdiy lising above tlie rndtcnl leaves : 

 involucre of about 12 scales. Akene 2 lines long, besides its beak of fully half a line in length. 



G. SETULOSA, Gray, of Utah (Palmar), has fewer flowers and scales, larger rays (a)>jmrently 

 white turning to pink), and smaller subtending bracts much sboittrr tlian tbe narrow bead ; tliesc 

 and the leaves want the scarious margins and slender fringes, which are represented, however, by 

 a slight callous edge and a few bristles on the lobes ; the akene.s arc quite glabmus, and their 

 beak tubular to tbe base. 



115. OALYOOSBRIS, Gn.y. 

 Head nmny-flowoml. Involucre double, viz. of one or two series of ('(pial lanco- 

 ojato })rincipal scales, and sf^veral short and Iooho calyculate outer ones, all scnriou-s- 

 margined. Ivecojdacle flat : a persistent cajjilhiry bristle suhteniling onv\\ flower 



