BORAGINACEAE J^BORAGE FAMILY) 421 



open: sepals lance-linear: filaments broadly and spatulately dilated. Range 

 of the species. 



4. Mertensia ciliata (Torr.) Don, Gen. Syst. 4: 322. 1838. Pale and glau- 

 cescent, glabrous and smooth, very leafy, 3-12 dm. high: leaves ample, veiny; 

 cauline oblong or lanceolate-ovate, ciliate-margined, mostly acute, the upper 

 becoming acuminate; basal leaves ovate or subcordate, 5-10 cm. long, petioled: 

 short racemes panicled: corolla bright blue; the tube exceeding the limb and 

 3-5 times as long as the ovate or oblong-obtuse, ciliate calyx-lobes: filaments 

 as broad as the anthers, inserted in the throat: style long and capillary. M. 

 sibirica Don. (M. picta Rydb. 1. c. 638.) Throughout our range. 



4a. Mertensia ciliata polyphylla (Greene) A. Nels. Stem strict, closely 

 and equably leafy. M. polyphylla Greene, Pitt. 4: 87. 1899. Colorado. 



46. Mertensia ciliata punctata (Greene) A. Nels. Foliage green, nearly 

 devoid of bloom, the leaves and pedicels roughened-puncticulate. M. punc- 

 tata Greene, Pitt. 4: 88. 1899. Colorado. 



4c. Mertensia ciliata longipedunculata A. Nels. Bull. Torr. Bot. Club 

 29: 402. 1902. Size of the species; stems more freely branched; stem and 

 branches few-leaved, terminating in long naked peduncles: calyx-lobes ovate, 

 subacute. Eastern Wyoming and southward. 



5. Mertensia cynoglossoides Greene, PI. Baker. 3: 19. 1901. Stems de- 

 pressed, 3-5 dm. long: leaves large, glabrous below, sparsely papillose- 

 scabrous above, ciliate-scabrous on the margins; basal leaves oblong, obtuse, 

 6-10 cm. long, petioled; cauline ovate to lanceolate, subacute: racemes few, 

 sparse, often long-peduncled: sepals small, lanceolate or broader, obtusish, 

 hispid-ciliolate as are also the pedicels: corolla-tube broad, as long as the limb, 

 3-4 times as long as the calyx. M. muriculata Greene, 1. c. Western Colorado. 



6. Mertensia brevistyla Wats. Bot. King's Expd. 239. 1871. Low, 1-2 dm. 

 high, pubescent with short, appressed, rigid hairs, the lower surface of the leaves 

 excepted: leaves oblong or oblong-lanceolate, very obtuse: flowers in a loose 

 panicle: calyx deeply 5-cleft or 5-parted, very hirsute; lobes oblong or ovate- 

 lanceolate, usually acute: corolla-tube short, equaling or but little exceeding 

 the calyx, and rarely as long as the deep blue limb : anthers inserted near the 

 base of the tube, and included within it: style very short. Western central 

 Rocky Mountains. 



6a. Mertensia brevistyla obtusiloba (Rydb.) A. Nels. Calyx-lobes obtuse, 

 noticeably shorter than the corolla-tube, merely ciliate on the margins. M. 

 obtusiloba Rydb. Bull. Torr. Bot. Club 28: 32. 1901. Southern Colorado. 



7. Mertensia papillosa Greene, Pitt. 3: 361. 1898. Sparingly leafy, 1-3 dm. 

 high: leaves oblong, revolute, densely papillose above, the low papillae bear- 

 ing a minute, short, setose hair at summit; lower face of leaf smooth and gla- 

 brous, margin scabrous: flowers panicled: fruiting calyx short and campan- 

 ulate, cleft to the middle, the lobes triangular, their margins pubescent, each 

 lobe traversed by a strong carinate midnerve: corolla small and almost tu- 

 bular, the narrow limb with its shallow lobes apparently erect. Mountains 

 of Colorado. 



la. Mertensia papillosa fusiformis (Greene) A. Nels. Root large and 

 fusiform: calyx parted to the base, the segments crinite-hirsute : corolla more 

 campanulate. M. fusiformis Greene, Pitt. 4: 89. 1899; M. congesta Greene, 

 PI. Baker. 2: 17. 1901. Southern Colorado. 



76. Mertensia papillosa lineariloba (Rydb.) A. Nels. Smaller, the stem 

 leaves nearly linear, very closely short-strigose above: pedicels strigose: 

 calyx-lobes narrow, merely hispid-ciliate on the margins. M. lineariloba 

 Rydb. Bull. Torr. Bot. Club 29: 32. 1901. Mountains of Colorado. 



8. Mertensia ovata Rydb. Bull. Torr. Bot. Club 28: 32. 1901. The low 

 stems numerous and tufted, 1-2 dm. high: leaves minutely strigose above, 

 broadly ovate, 20-25 mm. long, all but the lowest sessile: flowers crowded, on 

 short pedicels: sepals ciliate, shorter than the corolla-tube: corolla 10-12 mm. 

 long, the tube longer than the limb and throat: stamens nearly as long as the 

 corolla, the filaments broader than the anthers. (M . Parryi Rydb. 1. c. 34: 

 639.) Nearly alpine, among rocks; Colorado. 



