1902] ROCKY MOUNTAIN PLANTS 3^5 



branched, finel^^ striate, silvery-glaucous below, greener upward 



and becoming glandular-pubescent, 3-5*^™ high: leaves linear- 

 lanceolate, mostly with one or more pairs of lateral nerves, 

 obscurely undulate-toothed, glabrous or the uppermost viscid- 



mm 



pubescent, green and nearly normal in texture, 7— 1 2*^"* long, 5-10 

 broad: inflorescence a large freely branched cyme, nearly naked, 

 densely viscid or glandular-pubescent throughout, even on the 

 small bracts : involucres mostly three-flowered, salverform in 

 anthesis, i*^"^ or less in diameter, the bracts elliptic-ovate, sub- 

 acute, distinct nearly to the base: perianth white or pinkish, 

 broadly funnelform, 7-10™"^ '<^i^g. hirtellous without and within; 

 its limb deeply four-lobed, each lobe bifid, giving eight subequal 

 obtuse elliptic segments : stamens three, well exserted as also the 

 style : fruits narrowly obovate, about 5 ^^ long, inconspicuously 

 ribbed, somewhat tumidly rugose, moderately pubescent. 



This is the Rocky mountain form of what has passed as A, linearis Pursh, 

 but from that it is readily distinguished by its broader leaves of normal text- 

 ure, its viscid-pubescent paniculate cyme, and the bifid lobes of the perianth. 



ENOMEGRA/ — Coarse perennial herbs with thick milky 

 (white) sap and alternate pinnate or bipinnate leaves; green or 

 sometimes glaucescent but not blotched with white; densely 

 hispid-spinescent on stem and capsules and more sparsely so on 

 the toothed lobes of the leaves and on their veins; also a short 

 puberulence which on the stem and especially on the capsules 

 tends to become hispid. Flowers subsessile, in close clusters on 

 the ends of the leafy simple stems. Sepals 3, hispid near the 

 cornuate, subcucullate apex, conspicuously reticulate veiny and 

 inequilateral by the wing-like membranous margin on one side. 

 Petals 4—6, white, suborbicular or reniform. Stamens numerous, 

 filament and anther both narrow, sub-equal. Stigma dilated, 

 four-lobed. Capsule cylindric-ellipsoid, four-valved. Seeds 

 numerous, flattened, scarcely pitted. (Anagram of Argemoiie!) 



This genus must rest mainly upon the color of the sap (no one seems to 

 have made the observation that it is white), the character of the pubescence, 

 the simple stems, and the crowded inflorescence. The glaucescent blotching 



* This new genus unintentionally reached publication first in the writer's Key to 

 Rocky mountain flora (1902), p. 27, but it seems best to give it this fuller additional 

 publication. 



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