730 BORAGINACEAE 



elongate, not leafy-bracted ; sepals linear-lanceolate ; corolla about 8 mm. long. 

 A. -parviflora Macbr., in part, not Bcrnh., nor Heller. Dry places: Ida. — Wash. — - 

 Nev. Son. Ap-IVIy. 



7. A. tessellata A. Gray. Stem branched, 3-8 dm. high, sparingly hispid; 

 basal leaves oblanceolate, 8-15 cm. long, strongly but rather sparingly hirsute; 

 stem-leaves lanceolate, often somewhat clasping; calyx-lobes broadly lanceolate, 

 5-6 mm. long, in fruit often 1 cm. long; corolla orange, about 1 cm. long. Dry 

 and waste places: Wash. — Ida. — Utah — Calif. Son. — Subniont. My-Jl. 



14. MERTENSIA Roth. Lungwort, Bluebells, Languid Lady. 



Perennial caulescent herbs. Leaves alternate, entire. Flowers perfect, 

 regular, in racemes or panicles. C-alyx deeply 5-cleft, persistent, essentially 

 unclianged in age. Corolla tubular-funnelform or trumpet-shaped, blue or 

 purple, rarely white; throat rarely appendaged; lobes 5, imbricate. Stamens 

 included or barely exserted; filaments often flattened. Nutlets obliquely at- 

 tached by a small scar near the base to the convex receptacle, wrinkled at 

 maturity. Style fiUform; stigma entire. 



Filaments equalling or exceeding, and usually broader than the anthers. 

 Calyx-lobes longer than the short tube, rarely slightly shorter. 

 Caly.x-lobes Unear or oblong, obtuse. 



Stem 3-10 dm. liigh. I. Cili.\tae. 



Stem 2-3 dm. liigh. VIII. Incongkuentes. 



Calyx-lobes triangular-lanceolate to linear-lanceolate, acute. 



Tube of the corolla at least twice as long as the throat and limb. 



II. LONGrFLOR.\E. 



Tube of the corolla only sUghtly if at all longer than the tliroat and limb. 



Plant tall, usually more than 4 dm. high; leaves distmctly veined, m most 

 feather-veined, but in a few triple-vemed with anastomosing veins. 

 Stem, calyx-tube and lower siu-face of the leaves long-hairy. 



III. Panicul.\tae. 

 stem, glabrous; calyx .strigose or merely cUiate on the margins. 



IV. Membranaceae. 

 Plant low, usually less than 4 dm. high; leaves with a strong midrib, with- 

 out distinct lateral veins (except sometimes the basal leaves, which 

 then however are thick and firm) . V. Lanceol.\tae. 



Calyx-lobes roiuided-ovate, nauch shorter than the ample, campanulate tube. 



VI. Br.^chylobae. 

 Anthers subsessile or on very short narrow filaments inserted in the tube or the throat 

 of the corolla; low plants, 1-3 dm. high, of the habit of the L.\nceol.\tae group. 



VII. Alpinae. 



I. ClLIAT.\E. 



Lower surface of the leaves decidedly pubescent. 1. M. subpubescens. 



Lower surface of the leaves glabrous, except the ciUate margins. 

 Calyx-lobes oblong, l..'">-2 mm. long. 



Stem-leaves, at least the upper ones, narrowly lanceolate; plant very pale; pedi- 

 cels usually strigillose. 2. M. pallida. 

 Stem-leaves all ovate or broadly lanceolate; pedicels usually pustulate-mui-icate. 



3. M. ciliata. 

 Calyx-lobes Imear, 3 mm. long, ciUate. 4. M. platensis. 



II. LONGIFLORAE. 



Plant with a tuberous-thickened root and mostly a single stem. 



Leaves densely pubescent on both sides. 5. M. epUcata. 



Leaves glabrous at least beneath. 



Calyx-lobes linear-lanceolate, long-ciliate ; pedicels strigose; leaves linear-oblong 



to oblong-lanceolate. 6. M. oblongi folia. 



Caly.x-lobes short-ciliate ; pedicels glabrous or muriculate; leaves broader. 



Corolla-tube twice as long as the Umb and throat; leaves setulous-scabrous 



above. 7. A/, longiflora. 



Corolla-tube almost three times as long as the limb and throat; leaves merely 

 papillose above. 8. i\/. pulchella. 



Plant not tuberous-rooted, more or less cespitose. 



Floral leaves oblong. 9. M. nutans. 



Floral leaves ovate. 



Pedicels scabrous-miu"icate ; corolla-tube about tlu-ee times as long as the limb 



and tliroat. 10. M. tubiflora. 



Pedicels glabrous or minutely pustulate; corolla-tube about twice as long as the 

 limb and tlu'oat. 11. i\/. foliosa. 



III. PANICUL.'VTAE. 



Corolla about 1.5 cm. long; stem densely pubescent. 12. M. pilosa. 

 Corolla about 1 cm. long; stem sparingly pubescent. 



Calyx-lobes lance-Unear to lanceolate, acuminate. 13. i\/. paniculata. 



Calyx-lobes oblong-la.nceolate, acutish. 14. M. toyabensis. 



1 



