BORAGINACEAE (BORAGE FAMILY) 417 



Calyx-lobes equaling or exceeding the corolla-tube. 

 Hirsute, fulvous above. 



Nutlets nearly smooth . . . . . . 6. O. caespitosa. 



Nutlets conspicuously roughened . . . 7. O. nana. 



Silvery-canescent; nutlets muricate . . . 8. O. cana. 



White-sericeous, tawny above; nutlets rugulose- 



tuberculate. 

 Floriferous above only . . . . . . 9. O. serioea. 



Floriferous from the base ...... 10. O. elata. 



Calyx-lobes shorter than the corolla-tube. 

 Inflorescence terminal. 



Contracted capitate 11. O. fulvocanescens, 



Compound spicate . . . . ... . 12. O. cristata. 



Floriferous throughout; nutlets rugose . . . . 13. O. Bakeri. 



Biennials or scarcely more enduring, mostly from a taproot. 

 Corolla-tube not surpassing the calyx-lobes. 



Stem simple, or with smaller branches from the base; lower 



leaves oblanceolate 14. O. affinis. 



Stem simple or several from the base; lower leaves obovate 15. O. glomerata. 

 Stems two or more from the crown, equal. 



Nutlets sharply rugose 16. O. thyrsiflora. 



Nutlets roughly white-papillose 17. O. aperta. 



Stem strict, stout; inflorescence spicate, leafy-bracteate . 18. O. virgata. 

 Corolla-tube surpassing the elongated calyx-lobes . . . 19. O. longiflora. 



1. Oreocarya flava A. Nels., Bull. Torr. Bot. Club 25: 202. 1898. White- 

 pubescent below, fulvous or yellow-hirsute upward; stems numerous, tufted 

 on a branched lignescent caudex, 10-25 cm. high: leaves numerous; basal 

 ones scale-like and whit^-hairy; stem leaves linear to oblanceolate, 3-5 cm. 

 long: inflorescence crowded, glomerate-spicate : calyx yellow-hirsute, lobes 

 linear, half the' length of the corolla-tube: corolla a decided yellow, tube about 

 12 mm. long; crests conspicuous, emarginate: stamens and pistils dimor- 

 phic; stamens inserted just below the throat or just below the middle of the 

 tube; style the length of the tube or half the length: nutlets smooth, ovate, 

 narrowly winged, not all maturing. Southern desert region of Wyoming. 



2. Oreocarya alata (Jones) A. Nels. Pubescence short, soft and appressed, 

 longer but scarcely hispid in the inflorescence; caudex woody, branched; 

 stems single from the crowns, erect, 2-5 cm. high: basal leaves crowded, 

 linear-oblanceolate, 3-6 cm. long; those of the stem oblong-linear: inflores- 

 cence subcapitate, with one or more small clusters in the axils of the upper- 

 most leaves: calyx-lobes linear, shorter than the corolla-tube, fulvous-hirsute: 

 corolla yellowish, tube about 10 mm. long, at least twice as long as the lobes: 

 nutlets smooth, obtusely and narrowly wing-margined. Krynitzkia leu- 

 cophaea alata Jones, Cal. Acad. Sci. II. 5: 710. 1895. Sandstone cliffs and 

 barrens; Utah and probably western Colorado. 



3. Oreocarya flavoculata A. Nels. Erythea 7: 66. 1899. Hispid-ciliate, 

 loosely tufted on a branched caudex the branches of which are clothed with 

 dead leaf-bases, 1-2 dm. high: leaves linear-spatulate to narrowly obovate, 

 canescent: inflorescence crowded, becoming a thyrsus of short racemes, 

 fulvous and somewhat strigose: sepals lanceolate, about 7 mm. long: corolla 

 white or ochroleucous, the throat and conspicuous oblong crests bright yel- 

 low; tube slightly exceeding the calyx and nearly twice the length of the oval 

 lobes: nutlets ovate, roughened-papillate on the back. (O. eulophus Rydb. 

 Bull. Torr. Bot. Club 31: 637, 1904.) Southwestern Wyoming and south- 

 ward. 



4. Oreocarya multicaulis (Torr.) Greene, Pitt. 3: 114. 1896. Perennial, 

 tufted, densely pubescent and somewhat tomentose; stems numerous, rather 

 rigid, 3-5 dm. high, moderately leafy, bearing a thyrsus of numerous elongated 

 spikes at and near the summit : leaves mostly oblanceolate, becoming broadly 

 linear upward: spikes appearing uniserial and unilateral: nutlets ovate- 

 trigonous, smooth and shining. Krynitzkia Jamesii Gray in part. Southern 

 Colorado and southward. 



5. Oreocarya suffruticosa (Torr.) Greene, Pitt. 1: 57. 1887. Stems 

 tufted, freely branched, canescently pubescent or white-hirsute, about 2 dm. 

 hi^h, rather rigid and brittle: leaves linear-lanceolate or oblanceolate, cin- 



ROCKY MT. BOT. 27 



