GREENMAX. — NEW ANGIOSPERMS FROM MEXICO. 113 



long naked or subnaked, hirsute-hispid peduncles, 1 to 1.5 cm. high, 

 including the rays 3 to 4 cm. in diameter : involucre 2-3-seriate ; bracts 

 of the involucre subequal, linear-oblong, obtuse or obtusish, a little 

 shorter than the flowers of the disk, externally hirsute-pubescent: ray- 

 flowers about 12, neutral ; raj's conspicuous, yellow, 1 to 1.5 cm. long, 



4 to 6 mm. broad : disk-flowers numerous ; pappus reduced to two in- 

 conspicuous knobs: achenes glabrous. — Mexico. Territory of Te2:)ic : 

 in the Sierra Madre, between Santa Gertrudes and Santa Teresa, 8 

 August, 1897, Dr. J. N. Rose, no. 3378 (hb. Gr. & hb. U. S. Nat. Mus.). 



A species belonging to the § Pterophyton, and most nearly related to 

 V. capitaneja, Nees. 



Eryngiophyllum, n. gen. of CompositcB (^Coreopsidece). Heads 

 heterogamous, radiate. Involucre campanulate ; bracts 2-3-seriate, free 

 or very slightly united at the base. Receptacle flat or somewhat con- 

 vex, paleaceous ; ])^\e?, thin, membranous. Ray-flowers uniseriate, 

 fertile ; achenes subtriangular. Disk-flowers regular ; corolla-tube short, 

 gradually ampliate above into an elongated-campanulate 5-toothed limb; 

 achenes densely compressed. Anthers obtuse at the base, appendaged 

 at the apex. Style-branches hirtellous-elongate-appendaged ; stigmatic- 

 lines short. Pappus obsolete. Herbaceous perennials with radical 

 leaves and cymose inflorescence. 



E. Rosei. Leaves densely rosulate from the crown of a deep peren- 

 nial root, often somewhat falcate, linear-lanceolate, 3 to 12 cm. long, 



5 to 8 mm. wide, undivided or bearing one or more arcuate-ascending 

 lateral divisions, mucronate-acute, entire, somewhat cartilaginous-mar- 

 gined, ciliate, glabrous on both surfaces, more or less areolate : inflores- 

 cence axillary scapoid compound bracteate cymes, exceeding the leaves : 

 heads about 1 cm. high, 2.5 cm. broad, on glabrous or slightly hirtellous 

 peduncles 2 to 8 cm. ong : involucre 2-3-seriate ; bracts of the involucre 

 subequal ; those of the two outer series subherbaceous, lanceolate, acute, 

 ciliate, much thickened and gibbous at the base : ray-flowers about 20, 

 rays yellow, conspicuously nerved : disk-flowers numerous : pappus 

 quite obsolete or represented by very short protuberances : apical appen- 

 dages of the anthers short, broad, obtuse : achenes glabrous. — Mexico. 

 State of Sinaloa ; between Rosario and Calomas, 12 July, 1897, Dr. J. 

 N. Rose, no. 1618 (hb. Gr., and hb. U. S. Nat. Mus.). 



The natural affinity of the genus here proposed is apparently with 

 Isostigma and ChrysantheJlum. In the technical characters of the head, 

 particularly the style-branches, it approaches more closely the latter 

 genus. 



VOL. XXXIX. — 8 



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