716 BORAGINACEAE 



lanceolate, 6 cm. long; corolla blue, 6-8 mm. wide; fornices each of 3 wart-like 

 crests; fruit 4-5 mm. wide; backs pubescent. Canons: s Colo. Son. Je. 



7. L. trachyphylla Piper. Perennial; stem about 6 dm. high, hispid; 

 upper leaves lanceolate, attenuate-acuminate, 4-5 cm. long, harshly scabrous- 

 hispid on both sides; hairs with pustulate bases; corolla white, 10-12 mm. broad; 

 fornicles as broad as long, papillose; fruit about 6 mm. wide; back plane, muricu- 

 late, bearing several prickles. Dry places: Mont. Submont. 



8. L. coerulescens Rydb. Perennial; stems several, ascending, 4-6 dm. 

 high, grayish strigose; basal leaf -blades oblanceolate or spatulate, obtuse, gray- 

 ish strigose, ciliate-margined; stem-leaves linear-oblong, sessile; corolla 6-10 

 mm. broad, sky-blue, veined with blue; fruit about 7 mm. broad; back keeled, 

 finely muricate, with a few prickles. Hillsides: Alta. Wyo. Utah Nev. Sub- 

 mont. 



9. L. subdecumbens (Parry) A. Nels. Perennial; stem diffusely soft- 

 hirsute, spreading at the base, 3-7 dm. high; lower leaf-blades oblanceolate, 

 7-15 cm. long, soft hirsute, the upper ones oblong, sessile; corolla white, 8-12 

 mm. broad; back of the fruit with few short prickles. E. subdecumbens Parry. 

 Dry hillsides: Utah Ida. Submont. 



10. L. ciliata (Dpugl.) Greene. Perennial; stem 3-7 dm. high, cinereous- 

 strigose, with some hispid hairs; lower leaf -blades narrowly linear-oblanceolate, 

 acute, cinereous-strigose and hispid-ciliate; upper leaves sessile, linear; corolla 

 blue, 7-9 mm. broad; fruit 7-8 mm. broad; back flat, with a faint dorsal keel, 

 roughly muricate and with a few short prickles. E. ciliatum A. Gray. Dry 

 hillsides: Wash. Ida. Submont. My-Jl. 



11. L. cinerea Piper. Perennial; stem 4-6 dm. high, cinereous-strigose, 

 and somewhat hispid; basal leaf -blades linear or linear-oblanceolate, 6-10 cm. 

 long; the upper linear, sessile, densely hispid, the hairs with pustulate bases; 

 corolla white, 8-10 mm. broad; fornicles short-pilose; fruit 7-8 mm. broad; 

 back with a faint dorsal ridge, muricate and with a few prickles. Mountains: 

 Mont. n Utah Ida. Submont. Je-Au. 



12. L. angustata Rydb. Short-lived perennial; stem strict, hirsute, 6-8 

 dm. high; lower leaves petioled, 9-15 cm. long, strigose or hirsute on the petioles; 

 blades narrow, linear-oblanceolate, mostly acute; corolla blue, about 4 mm. wide; 

 fruit 4-5 mm. wide; back slightly keeled, minutely hispidulous or glabrous. 

 Mountain valleys: Black Hills, S.D. Colo. Submont. Je-Jl. 



13. L. scaberrima Piper. Perennial; stem softly hirsute below; basal leaf- 

 blades spatulate, obtuse, harshly hispid-strigose; stem-leaves oblong-lanceolate; 

 corolla blue, 5 mm. broad; fornicles broader than long, papillose; fruit 6 mm. 

 wide; back smooth, with prominent keel. Hills and mountains: w Neb. Colo. 

 Plain Submont. Jl. 



14. L. erecta A. Nels. Stem 2-4 dm. high, strigose; basal leaves numerous, 

 rosulate, oblanceolate, 1-3 cm. long; stem-leaves linear or linear-oblong, sessile, 

 1-4 cm. long, strigose; corolla blue; fruit about 5 mm. broad; back muricate. 

 Foot-hills and sandy places: Alta. Wyo. Yukon. Submont. Mont. Je-S. 



15. L. cenchrusoides A. Nels. Stem intricately branched, 2-4 dm. high, 

 strigose; leaves and bracts numerous; small, oblong or ovate, obtuse, 1-2 cm. 

 long, strigose above, hispid below; back of fruit papillose-tuberculate. Hills: 

 Wyo. Submont. S. 



16. L. Fremontii (Torr.) Greene. Stem erect, strigose, with erect or 

 ascending branches, 2-4 dm. high; leaves 1-3 cm. long, oblong or oblanceolate, 

 strigose above, hispid beneath; biacts smaller, lanceolate, acute; back of the fruit 

 strongly muricate. E. Fremontii Torr. Canons and river banks: Sask. Wyo. 

 Calif. Submont. Ap-S. 



17. L. calycosa Rydb. Stem hirsute, 3-4 dm. high, simple below, branched 

 above, with long virgate branches; leaves oblong, obtuse, 3-4 cm. long, 7-8 mm. 

 wide; corolla pale blue, about 1 mm. broad; calyx-lobes enlarged in fruit, foli- 

 aceous, 4-6 mm. long; fruit about 4 mm. in diameter; back strongly muricate. 

 Deserted fields and waste places: Colo. Submont. Je-Jl. 



