422 SUPPLEMENT. 



++ ++ Larger- and less sparsely-flowered, erect: dorsal disk of the nutlets flat, ovate or deltoid, 

 unarmed, granulate-scabrous, 2 lines or more in length; marginal prickles flat and subulate. 



Ej. ursinum, Greene. Nutlets with ovate disk nearly plane ; the marginal prickles short, 

 unequal, sometimes confluent into a wing-like border : stem and leaves hirsute or hispid : 

 fruiting pedicels sparse, longer than the fruit. — Gray, Proc. Am. Acad. xvii. 224. — Moun- 

 tains of New Mexico, Fendler (633), Greene, and of S. Arizona, Lewmon. Also S. Utah, 

 Parry, without fruit. 



E. floribundum, Lehm. Nutlets with dorsal disk deltoid and with a strong midnerve or 

 keel ; margin armed with long flat prickles : iierbage soft-pubescent or tlie stem soft-hir- 

 sute : pedicels mostly shorter than the fruit: corolla (blue, sometimes white) with limb 

 only 2 or 3 lines in diameter. — Gray, 1. c. E. floribundum in part, p. 189. — Saskatchewan 

 to Colorado and Northern New Mexico, Utah, and Washington Terr. 



H— -H- Perennials, usuall}' larger-flowered: pedicels mostly longer than the fruit. 

 ++ Corolla rotate: nutlets with some glochidiate prickles or processes on the flattish or convex 

 ovate dorsal disk, but these shorter than the flattened subulate and sometimes confluent ones of 

 the margin : leaves usually lanceolate. 



E. diflEusum, Leii.m. (not of p. 189). Soft-pubescent, or at most soft-hirsute (occasionally 

 some papillusities ou the leaves) : corolla bright blue, varying to white, one-third to two- 

 thirds of an inch in diameter : marginal prickles of the nutlets subulate and very flat, nearly 

 as long as the width of the dorsal disk, this beset with a few small glochidiate processes : 

 scar nearly central. — Gray, Proc. Am. Acad. xvii. 225. E. floribundum, p. 189, in part. 

 E. subdecumbens. Parry in Proc. Davenp. Acad. i. 48. Rocheba patens, Nutt. Jour. Acad. 

 Philad. vii. 44, in descr. of which the last two sentences obviously belong elsewhere. — 

 Common from tiie mountains of Utah to those of California, also North Montana and 

 British Columbia. 



E. hispidum, Gkay. Hispid with spreading papillose-based hairs : leaves green ; lowest 

 broadly lanceolate ; upper ones short and small : racemes lax : corolla " greenish white," 

 2 or 3 lines in diameter : marginal prickles of the obcompressed nutlets small and narrow, 

 much shorter than the width of the oval or ovate and either sparsely or copiously gh)chidi- 

 ate dorsal disk, their bases confluent into a thin margin or distinct wing (which is some- 

 times reflexed or cup-like) ; inner face smooth and lucid, with scar almost central. — Proc. 

 Am. Acad. xx. 259. E. difl'usum, var. Jn'sjiiduni, Gray, Proc. Am. Acad. xvii. 225. — Rocky 

 hillsides, E. Oregon, Cusick, S. W. Idaho, Wilcox, and probably Montana, Watson. 

 E. ciliatum, Gray. Cinereous with a much appressed pubescence, and bristly-hirsute, 

 especially along the margins of the linear or narrowly lanceolate leaves : stems strict, a foot 

 or more high : corolla rather large, blue or violet : fruit unknown. — Proc. Am. Acad. 1. c., 

 excl. what relates to Ci/noglossiim Hourirdi. Ci/no(/lossum cilia f urn, Dougl. in hei-b. Hook., 

 Lehm. Pug. & in Hook. Fl. ii. 85. — Mountains of Idaho; "near the head-springs of the 

 Columbia," and near the narrows above Kettle Falls on the Columbia and banks of the 

 Spokan Kiver, 182G," Douglas. Not since seen. 



++ +.J. Corolla short-sal verfnrm, i. e. with tube (surpassing the calyx) about the length of the 

 ample lobes: nutlets armed pll over the back with long glochidiate i)nckles quite like those of 

 the margins: leaves spatulate-oblong to lanceolate or the upper ovate-lanceolate, thickish in age, 

 with prominent midrib but no obvious veins or nerves. 



E. Californicum, Gray, I.e. E. di/fusum, of p 189, not of Lehm. E. nervosum, Kellogg, 

 Proc. Calif. Acad. ii. 146, f. 42, according to specimen; but the leaves in the species ai-e 

 remarkably nerveless and veinless. 



E. B.edc"wskii, var. OCCidentale, Watson, p. 190. Add syn. : E. FremontH, Torr. 

 Pacif. R. Rep. xii.2 46. 



11. OMPHAL6DES,Tourn., § Eritri'cftium. ('Oyac^aXcoSr??, navel-shaped : 

 unhappily for the name, the navel is on the back of the nutlet.) — Gray, Proc. 

 Am. Acad. xx. 262. The plants of this subgenus are low or depressed perenni- 

 als, of arctic and alpine or subalpine regions in the Northern hemisphere. 



