BORAGE FAMILY 719 



3. P. Kingii A. Gray. Stem 2-3 dm. high, canescent-hirsute; basal leaves 

 spatulate, densely hirsute, the cauline oblong or lanceolate; inflorescence 

 branched; corolla white, 6-8 mm. broad; fruiting calyx 4-6 mm. long; lobes 

 lance-linear; nutlets roughened with scattered acute papillae. Sonnea Kingii 

 Greene. Arid valleys: Nev. Ida. (? Utah). Son. 



9. EREMOCARYA Greene. 



Dichotomously branched annuals. Leaves alternate, linear, entire, hirsute- 

 canescent. Flowers perfect, regular, biserial in dense leafy racemes. Calyx 

 wholly persistent, 5-cleft; lobes linear-oblong, obtuse, short-hirsute, not hispid. 

 Corolla minute, salver-shaped, white; throat obscurely appendaged. Style 

 thickened. Nutlets attached by a simple groove for their whole length to the 

 columnar receptacle. 



Nutlets smooth and shining. 1. E. micrantha. 



Nutlets finely muricate, dull. 2. E. muricata. 



1. E. micrantha (Torr.) Greene. Stem slender, branched from the base, 

 diffuse, 5-15 cm. high, strigose; leaves linear, 4-8 mm. long, hispid; corolla white, 

 barely 2 mm. long; nutlets oblong-ovate, acute. Eritrichium micranthum Torr. 

 Dry plains: w Tex. s Utah s Calif. L. Son. Je. 



2. E. muricata Rydb. Stem slender, branched throughout, with ascending 

 branches, strigose; leaves linear, 2-5 mm. long, hispidulous; corolla white, 1 mm. 

 long; limb scarcely 0.5 mm. wide; nutlets lanceolate in outline. , Dry plains and 

 hills: s Utah Ariz. L. Son. Ap-My. 



10. OREOCARYA Greene. 



Perennial or at least biennials, with taproots or short rootstocks. Leaves 

 alternate, the earlier in basal rosettes, more or less hispid. Calyx wholly per- 

 sistent, 5-cleft; the lobes ascending or, spreading in fruit. Corolla salverform, 

 white or yellowish; tube often elongate, annulate within near the base; throat 

 closed by conspicuous fornices; limb 5-lobed. Inflorescence thyrsoid or panicu- 

 late, leaf y-br acted. Nutlets triangular, sometimes somewhat wing-margined, 

 attached for the larger part of their length by a slender scar on the inner angle 

 to a subulate or columnar receptacle. 



Corolla-tube not exserted. 



Fruit depressed; nutlets smooth, at the margins separated by an open space; caules- 

 cent cespitose perennials. 

 Leaves canescent. 



Nutlets all maturing. 



Leaves appressed-canescent, not hispid; corolla 57 mm. wide. 



1. O. cinerea. 

 Leaves with the fine pubescence intermixed with hispid hairs on the lower 



surface; corolla less than 5 mm. wide. 

 Plant low, grayish, not yellowish hispid above; racemes short, 2-ranked. 



2. O. suffruticosa. 

 Plant tall, yellowish hispid above; racemes in fruit elongate, 1-ranked. 



3. O. multicaulis. 

 Nutlets only one maturing, three abortive. 4. O. disticha. 



Leaves green, having scattered short hairs with pustulate bases above, glabrous 



beneath. 5. O. pustulosa. 



Fruit conical or ovoid; nutlets touching each other. 



Floral leaves long, many times longer than the flower-clusters; inflorescence 



spike-like; biennials or short-lived perennials. 



Nutlets transversely rugose. 6. O. virgata. 



Nutlets smooth. 7. O. spicata. 



Floral leaves comparatively short, little if at all surpassing the flower-clusters. 

 Nutlets rough. 



Nutlets decidedly wing-margined. 



Branches of the inflorescence appressed, erect, in fruit elongate; nut- 

 lets merely muricate on the back. 8. O. setosissima. 

 Branches of the inflorescence spreading; nutlets rugose as well as muri- 

 cate on the back. 11. O. virginensis. 

 Nutlets acute-margined, not winged. 



Calyx-lobes ovate-lanceolate, only slightly exceeding the mature nut- 

 lets; inflorescence paniculate, with rather few branches; caules- 

 cent perennials, often cespitose. 



Corolla 7-8 mm. broad; nutlets muricate and cross-ribbed, but 

 not honeycomb-crested. 9. O. elata. 



