734 BORAGINACEAE 



21. M. arizonica Greene. Stem 3-5 dm. high; leaves thin, glabrous, 

 smooth or minutely pustulate above, ciliolate on the margins, the lower peti- 

 oled, with oblanceolate blades, the upper sessile, lanceolate or ovate, 5-10 cm. 

 long; calyx-lobes ovate, ciliate-margined, 3-4 mm. long; corolla 12-15 mm. long. 

 Canons: Utah Ariz. Submont. Je-Jl. 



22. M. intermedia Rydb. Stem 3-4 dm. high, glabrous, strict; lower 

 leaves about 1 dm. long; blades oblanceolate, obtuse, minutely pustulate and 

 scabrous-ciliolate on the margins; upper leaves sessile, oblong or lanceolate; 

 sepals lanceolate, hispid-ciliate, 3-4 mm., in fruit often 8 mm. long; corolla-tube 

 8-10 mm. long; limb 5-7 mm. long. (?) M. umbratilis Greenm. M. stenoloba 

 Greene. Hills and banks: Mont. Wyo. Ida. Submont. Mont. My-Jl. 



23. M. praecox Smiley. Stem 4-5 dm. high, glabrous; cauline leaves ovate- 

 elliptic to suborbicular, 6-9 cm. long, 3-4.5 cm. wide; calyx-lobes glabrous or 

 slightly ciliate, 2-4 mm. long; corolla-tube slender, 2.5 mm. thick; throat and 

 limb. 5 mm. long. Canons: Utah. My. 



24. M. Leonard! Rydb. Stem erect, glabrous, 5-10 dm. high; leaves thin, 

 glabrous and smooth beneath, more or less pustulate-muricate above, and cilio- 

 late on the margins, the lower short-petioled ; blades oblanceolate, 4-7 cm. long; 

 stem-leaves lanceolate or ovate, 5-15 cm. long; pedicels sparingly pustulate; 

 calyx-lobes lanceolate, 4 mm. long, ciliolate; corolla-tube 6-7 mm. long; limb 8-10 

 mm. long, 7-8 mm. wide. Canons: Utah. Submont. Mont. Jl. 



25. M. fusiformis Greene. Stem 1-3 dm. high, glabrous; leaves thick, 

 strigose above, glabrous beneath, the lower petioled, 5-8 cm. long, with spatu- 

 late blades; stem-leaves oblong or lanceolate; pedicels strigose; calyx villous- 

 ciliate on the margins and often with a few scattered hairs on the back; corolla 

 8-10 mm. long; tube equalling the limb. M. congesta Greene. Hillsides: Colo. 

 Submont. Mont. My-Je. 



26. M. lateriflora Greene. Stems 2-3 dm. high, canescent-strigose ; leaves 

 crowded, linear or lance-linear, 3-5 cm. long, canescent-strigose on both sides; 

 inflorescence leafy; pedicels and calyx strigose; calyx-lobes lanceolate, more 

 villous; corolla 6-8 mm. long; throat and limb only slightly shorter than the tube. 

 M. secundorum Cockerell. Mountains and hillsides: Colo. Submont. Sub- 

 alp. My-Jl. 



27. M. Bakeri Greene. Stems 1-3 dm. high, densely strigose-canescent ; 

 lower leaves spatulate or oblanceolate, the upper oblong or lanceolate, 3-5 cm. 

 long, canescent; pedicels densely strigose; calyx pilose; lobes linear; tube of the 

 corolla 6-7 mm. long; throat and limb 5-6 mm. long. Mountains: Colo. Mont. 

 Alp. Je-Jl. 



28. M. nivalis (S. Wats.) Rydb. Stem 1-2 dm. high, sparingly strigose or 

 almost glabrous; basal leaves petioled, 35 cm. long; blades spatulate or oblance- 

 olate; stem-leaves lanceolate or ovate, 1-3 cm. long, sparingly strigose on both 

 sides; pedicels short, strigose; calyx-lobes lanceolate, 2 mm. long, silky-strigose ; 

 corolla 10-12 mm. long, tube about equalling the limb. M. paniculata nivalis S. 

 Wats. High mountains: Utah. Subalp. An. 



29. M. media Osterhout. Stem slender, 2-3 dm. high, glabrous or sparingly 

 pubescent; leaves all linear, 3-6 cm. long, the upper shorter, appressed short- 

 hirsute on both sides, the upper often with pustulate-based hairs; pedicels hir- 

 sute; calyx 3-3.5 mm. long; lobes narrowly linear; corolla about 1 cm. long, the 

 tube equalling the throat and limb. Hills: Colo. Submont. My. 



30. M. myosotifolia Heller. Stem 1-2 dm. high, densely pilose; leaves 

 rather thick, densely pilose on both sides, the lower petioled, 5-8 cm. long, with 

 ovate or lance-elliptic blades; stem-leaves sessile, lanceolate or ovate, 35 cm. 

 long; pedicels and calyx pilose, the latter 3 mm. long, with lance-ovate lobes; 

 corolla-tube 5-7 mm. long, throat and limb 4-6 mm. long. M. micrantha A. 

 Nels. Mountains: Colo. Mont. Je. 



31. M. amoena A. Nels. Stem 1-3 dm. high, pilose with short spreading 

 hairs; leaves pilose, the lower 4-7 cm. long, petioled, with oblong-oblanceolate to 



