422 BORAGINAGEAK (borage FAMILY) 



•9. Mertiensia Tweedyi Rydb. Mem. N. Y. Bot. Gard. 1: 336. 1900. Steins 

 low, loosely tufted, decumbent at base, 8-15 cm. long: leaves minutely strig- 

 illose and papillose above, dark green, oblong to spatulate, Bubaftute: calyx- 

 lobes lance-linear, ciliate, about half as long as the corolla-tube i corolla dark 

 blue, 8-10 mm. long, limb and tube subequal: stamens included in the throat 

 filaments very short: style short.- — High mountains; Wyoming and northward. 



10. Mertensia viridis A. Nels. Bull. Torr. Bot. Club 26: 244. 1899. Roo1> 

 stocks woody, creeping in the crevices amOng the rocks; stems slender, rather 

 weak, decumbent at base, 2-4 dm. long, glabrous or sparsely hispidulous: 

 leaves bright green, minutely hispidulous above^ radical oblong to ellipticj 

 4-6 cm. long, on longer slender petiole's; caiuline oblong; SiiistUef anrf'aotitish 

 upward: panicle leafy-bracteate; peduncle and pedicels slender; corolla about 

 1 cm. long, the tube exceeding the limb and about twice the length of* the 

 sepals: filaments narrower than the anthers. — High rocky summits;' Wyo- 

 ming and Colorado. 



11. Mertensia coronata A. Nels. Bull. Torr. Bot. Club 29: 40?i 1902. 

 Tufted, from large friable roots; stems shining, assurgent, 2-4 driii'lorig^; 

 leaves numerous,' large for the plant, minutely scabrous above (the hairs 

 short, curved, and sometirnes early deciduous from the small pustulate 

 ■base); radical obloiig, 5-10 cm. long, on petidles 2-3 times as long; cauline 

 smaller, and , becoming sessile and ovate-lahceolate above: flower clusters 

 terminal and ' axillary, at length open-paniculate among the floral leaves: 

 calyx-lobeS triangular-lanceolate, sjsaringly Ciliate: corolla-tube rather bro&d, 

 5 mm. long, exceeding the caljrx; limb shorter than the tube, the lobes sub- 

 orbicular, abruptly dilated from the rounded sinils: stamens inserted feeloW 

 the conspicuous crown Of crests ill the throat; the filaments broader ttoii the 

 anthers. — ^Western Wyoming to Idaho and Montana. ■'' ' 



12. Mertensia lanceolata (Pursh) DC. Prod. 10: 88. 1846. Minutely 

 pubescent on upper face of leaves, otherwise glabroils and' glaucesceilt; stems 

 simple or a]t lenlgth pianiculately branched, 2-4 dm. high: leaves spatulate- 

 oblong to lainceolate-liiiear, 3-5 cm. long, obtuse to acute, semifleshy: raceme 

 becoming loosely panicled: calyx-lobes lanceolate, ciliatej one half to nearly 

 as long as the corolla-tube, which usually exceeds the subijam'paiiulate' throat 

 and limb: corolla-tube, hairy at the base within: filaments 'inserted in the 

 throat, longer than the anther: style capiflarjr,' nearly as long as the corolla.— 

 Plains and open hills; Colorado and Wyoming. , ' . _ 



12a. Mertensia lanceolata brachyloba (Greene) A. Nels. Calyx turbinatie, 

 the broad lobes shorter than the 'tube :' corolla-tube Scarcely equaling the limb. 

 M. brachyhba Greene, Pitt. 4: 90l 1899.^ — In the mountains of Colorado* 



13. Mertensia pratensis Heller, Bull. Torr. Bot. Club 26: 550. 1899. 

 Stems' erect, several from a thick rootstock, 3-5 dm. high, rather equably 

 leafy: leaves thin, bright green, lanceolate; mostly acute; lower petioled, 

 5-10 cm. long; upper merely foliat bracts: infiorescence pilbescent with 

 short appressed hairs, especially the margins of the linear-lanceolate acute 

 calyx-lobes: corolla blue or pink, 15-18 mm. long; the tube much surpassing 

 the calyx and about equaling the campanulate linib, which has' short, broad 

 rounded lobes. (M. alba Rydb. is an albino form.)i--^outhem Goloraido and 

 New Mexico. ' 



14. Mertensia Bakeri Greene, Pitt. 4: 91. 189i9. Softly ciliate or villous' 

 pubescent throughout, with appressed or spreading hairs, tufted on a branched 

 semiwoody caudex, 15-25 cm. high: basal. leaves oblong, subacute, 3-5 cm. 

 long, on longer petioles; stem leaves linear-lanceolate or oblanoeolate, sinaUer, 

 sessile upward: infloi-escence crowded, ternijinal: corolla about 15 mm. Ibng, 

 the' tube scarcely longer than the limb and twice as long as the lariclsiolate, 

 viHous-ciliate calyx-lobes: style filiform, about equaling the coroUa. — Motm- 

 tains of Colorado. ' 



14a. Mertensia Bakeri amoena A. Nels. Less densely pubescent, the calyi* 

 lobes merely ciliate on margins: crests in corolla-throat inconspicuous. "M. 

 amoena A. Nels. Bot. Gaz. 30: 95. 1900. — ^Yellowstone Park and'adjtont 

 regions. > v^ ■ ;, ., ■..■ .,'■, ij;,.,! 



