BORAGE FAMILY 731 



IV. MEMBRANACEAE. 

 Pedicels hairy. 



Corolla 1 cm. or less long. 



Fruiting pedicels strongly reflexed. 15. M . refracta. 



Fruiting pedicels ascending or nodding. 



Corolla-tube over 4 mm. wide; calyx bristly-ciliate. 16. M. cynoglossoides . 

 Corolla-tube 2-3 mm. wide. 



Calyx strigose; stem-leaves ovate. 17. M. membranacea. 



Calyx only ciliate on the margins; leaves oblong-lanceolate or only the 



uppermost ovate. 

 Hairs of the pedicels not with pustulate bases. 



Plant stout; pedicels bristly -hispid with spreading hairs. 



18. M. muriculata. 



Plant slender; pedicels strigose. 32. M. viridis. 



Hairs of the pedicels very short, and with pustulate bases. 



35.- M. coronata. 



Corolla about 1.5 cm. long. 19. M. pratensis. 



Pedicels muricate-scabrous or smooth. 



Calyx-lobes not longer than the fruit; leaves broadly ovate. 20. M. brachycalyx. 

 Calyx much exceeding the fruit; leaves oblong or lanceolate, or ovate in no. 23. 

 Calyx-lobes shorter than the calyx-tube, bristly ciliate. 21. M. arizonica. 

 Calyx-lobes longer than the calyx-tube. 



Corolla about 15 mm. long; pedicels smooth or sparingly callous-pustulate. 

 Corolla-tube not shorter than the limb and throat. 



Upper leaves at least three times as long as wide. 22. M. intermedia. 

 Upper leaves not more than twice as long as wide. 23. M.praecox. 

 Corolla-tube shorter than the limb and throat. 24. M. Leonardi. 



Corolla 10 mm. long; pedicels with small hispidulous hairs with pustulate 

 bases. 35. M. coronata. 



V. LANCEOLATAE. 



Pedicels decidedly strigose or hirsute. 



Stem from a fusiform root; leaves glabrous beneath. 25. M. fusiformis. 



Stem from a more or less woody caudex or rootstock. 



Leaves pubescent on both sides; calyx usually densely pubescent all over. 

 Leaves linear or only the uppermost lanceolate. 26. M. lateriflora. 



Blades of the lower leaves ovate or spatulate. 



Plant more or less grayish and densely strigose throughout. 



27. M. Bakeri. 

 Plant green. 



Pubescence short, on the stem sparse. 



Calyx conspicuously pubescent. 28. M. nivalis. 



Calyx glabrous except the ciliate margins. 29. M . media. 

 Pubescence longer and loose. 



Calyx less than half as long as the corolla-tube. 



30. M. myosotifolia. 



Calyx fully half as long as the corolla-tube. 31. M. amoena. 

 Leaves glabrous beneath; calyx usually glabrous, except the ciliate margins and 



sometimes the midrib. 



Calyx-lobes ovate-lanceolate; inflorescence open. 32. M. viridis. 



Calyx-lobes narrowly lanceolate; inflorescence dense. 



Leaves narrowly linear. 33. M. lineariloba. 



Leaves oblong-lanceolate to ovate. 



Stem-leaves ovate to lance-ovate, finely strigose above; corolla-limb 



and throat decidedly shorter than the tube. 34. M. ovata. 

 Stem-leaves oblong-laneeolate; corolla-limb and throat nearly equalling 



the tube. 

 Leaf-blades scabrous-hispidulous or merely pustulate above; stem 



2-4 dm. high. 35. M. coronata. 



Leaf-blades hispidulous-strigose above; stem rarely more than 2 



dm. high. 36. M. Parryi. 



Pedicels and calyx glabrous, except the ciliate lobes of the latter. 



Calyx-lobes ovate-lanceolate; upper stem-leaves ovate. 37. M. Drummondii. 



Calyx-lobes narrowly lanceolate; stem-leaves linear or oblong. 



Upper surface of the leaves short-pubescent. 38. M. linearis. 



Upper surface of the leaves not hairy. 39. M. lanceolata. 



VI. BRACHYLOBAE. 



Calyx-lobes ciliate on the margins. 40. M. brachyloba. 



Calyx-lobes not ciliate on the margins. 41. M. campanulata. 



VII. ALPINAE. 



Calyx ciliate on the margins; inflorescence narrow. 

 Leaves short-strigose above, glabrous beneath. 



Corolla 7-9 mm. long; plant depressed, decumbent or ascending, 1-2 dm. high. 



Calyx-lobes obtuse. 42. M. alpina. 



Calyx-lobes acute. 43. M. Tweedyi. 



Corolla more than 10 mm. long; stem about 3 dm. high. 44. M. perplexa. 



Leaves merely pustulate-punctate above. 45. M. humilis. 



