ErUrichium. BORRAGINACE.E. 195 



lanceolate : crests in throat of corolla inconspicuous : nutlets half a line long, ovatc-tri- 

 anguhir, strongly muricate-granulate on the rounded back, which is bordered by acute 

 angles ; the inner faces very smooth and concave when dry ; the ventral angle beveled by 

 the deltoid-lanceolate scar wliich terminates below the apex in a narrow groove: gynobase 

 subulate-pyramidal. — Pacif. K. Rep. ii. 171. — North-western borders of Texas and adjacent 

 New Mexico, Pope, Wrlcjld. Calyx in fruit about a line long, apparently not deciduous 

 with the fruit. 

 E. hispidum, Buckley. A span or more high, greyish-hispid, diffusely much branched, 

 even the loose paniculate spikes mostly leafy : leaves linear: flowers rather scattered: 

 calyx-lolies lanceolate : crests in throat of the corolla rather conspicuous : nutlets half 

 to two-thirds of a line long, triangular-ovate, without lateral angles, coarsely granulate 

 (sometimes almost smooth) rovmd to the deltoid or triangular-lanceolate excavated scar. 

 — Proc. Acad. Pliilad. 1861, 4G2 ; Gray, Proc. Am. Acad. x. 5fl. E. heUolropiuidcs, Torr. Bot. 

 Mex. Bound. 140, mainly, excl. syn. DC. — Plains and sandy banks, W. Texas to New 

 Mexico, extending into Mexico. Calj' x a line long, closed at maturity, and deciduous with 

 the enclosed fruit, like a bur. 



= = Nutlets either solitary or dissimilar: calyx-lobes linear, obtuse, tliickisli, closed over the 

 fruit (2 or 3 lines long) ; the midrib below becoming much thickened and indurated. 



E. Texanum, A.DC. About a foot high, loosely branching, rough-hispid : leaves obovate- 

 oblong or spatulate, or the uppermost linear: spikes mostly leafless : flowers nearly sessile : 

 calyx in fruit separating by an articulation: nutlet usually only one maturing, fully a line 

 long, oblong-ovate, rounded on the back, smooth and even, but minutely puncticulate, fixed 

 by a narrow scar from base to below the middle to a small conieal-colunmar gynobase. — 

 Gray, 1. c. — Texas, about Austin, &c., Drumimmd, Wright, E. Hall. Flowers smaller and 

 midrib of the sepals less thickened than in the next. 



E. crassisepalum, Torr. & Gray. A span high, diffusely much branched from the 

 base, very rough-hispid : leaves oblanceolate and linear-spatulate : flowers short-pedicelled, 

 many or most of them bracteate : lobes of the persistent calyx greatly thickened below in 

 fruit : nutlets ovate, acute, rounded on the back, dissimilar, tliree of them muricate-granu- 

 late and one larger and smooth or nearly so (fully a line long), fixed to the conical-pyra- 

 midal gynobase from base to middle by an ovate-lanceolate excavated scar. — Pacif. R. 

 Rep. ii. 171 ; Gray, Proc. 1. c. — Plains, Western Texas and New Mexico to Nebraska and 

 Saskatchewan. The larger and smooth nutlet, like the similar and only fertile one of E. 

 Texanum, appears to be unusually persistent. Short pedicel thickened and indurated with 

 the calyx at maturity, disposed to separate tardily by an articulation. 



* * (Pterygium.) Nutlets and flowers of the foregoing subsection; but the former (cither all or 

 three of them) surrounded by a conspicuous tirm-scarious erenate or lobedwing: crests in tiie 

 tiiroat of the corolhi rather small. 



E. pterocaryum, Torr. Annual, slender, loosely branching, hirsute: leaves linear, or 

 the lowest spatulate, often hispid : inflorescence at first cymose-glomerate, usually develop- 

 ing a pair of short spikes, mostly bractless : calyx-lobes oblong and in fruit ovate, erect, 

 and with rather prominent midrib: corolla very small (its limb less than a line in diam- 

 eter) : nutlets oblong-ovate, rough or granulate-tuberculate on the rounded back, affixed 

 for nearly the whole length to the filiform-subulate gynobase by a narrow groove which 

 widens gradually to the base ; one of them commonly wingless and rounded at the sides ; 

 the others with lateral angles extended into a broad radiately striate wing with toothed or 

 crenulate margins. — Wilkes Exp. xvii. 415, t. 13 ; Watson, Bot. King, 245 ; Gray, 1. c. — 

 Dry interior region, from the plains of the Columbia River, Washington Tcrritor}-, through 

 Nevada and the borders of California to Arizona, New Mexico, and the borders of Texas. 

 Fruiting calyx 2 lines long, rather sparsely hispid, very short-pedicelled, apparently not 

 falling with the fruit. Nutlets a line and a half long, including the surrounding broadly 

 ovate wing. 



Var. pectinatum, Gray, 1. c, has all the nutlets winged, and the wings pectinately 

 cleft half waj' down. — S. Utah and Arizona, Parrij, Palmer. 



* * * (Pskuoo-Myosotis.) Nutlets triangidar or triquetrous, witli acute or even winged lateral 

 angles, attached by iialf or nearly their whole length to the subulate or slender-pvramidal gj'no- 

 basc: the scar very slender and usually with transversely dilated base: corolla with prominent 

 fornicate crests at the throat, and near the base within annulate: biennials or perennials, mostly 

 with thyrsiform and leafy-bracteate inflorescence. 



