BORAGINACEAE (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. Ncls. 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. Sie 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 pa pillosa 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. 



