730 BORAGINACEAE 



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

 A. parviflora Macbr., in part, not Bernh., nor Heller. Dry places: Ida. Wash. 

 Nev. Son. Ap-My. 



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. Submont. My-Jl. 



14. MERTENSIA Roth. LUNGWORT, BLUEBELLS, LANGUID LADY. 



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

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

 unchanged 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 filiform; stigma entire. 



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

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

 Calyx-lobes linear or oblong, obtuse. 



Stem 3-10 dm. high. I. CILIATAE. 



Stem 2-3 dm. high. , VIII. INCONGRUENTES. 



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



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



II. LONGIFLORAE. 



Tube of the corolla only slightly if at all longer than the throat and limb. 

 Plant tall, usually more than 4 dm. high; leaves distinctly veined, in most 

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

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



III. PANICULATAE. 

 Stem glabrous; calyx strigose or merely ciliate 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. LANCEOLATAE. 



Calyx-lobes rounded-ovate, much shorter than the ample, campanulate tube. 



VI. BRACK YLOBAE. 



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 LANCEOLATAE group. 



VII. ALPINAE. 

 I. CILIATAE. 



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



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

 Calyx-lobes oblong, 1.5-2 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-muricate. 



3. M. ciliata. 

 Calyx-lobes linear, 3 mm. long, ciliate. 4. M. platensis. 



II. LONGIFLORAE. 

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



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



Leaves glabrous at least beneath. 



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



to oblong-lanceolate. 6. M. oblongifolia. 



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



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

 _. above. 7. M. longiflora. 



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



papillose above. 8. M. pulchella. 



Plant not tuberous-rooted, more or less cespitose 



Floral leaves oblong. 9. M . nutans. 



Floral leaves ovate. 



Pedicels scabrous-muricate ; corolla-tube about three times as long as the limb 

 _, and throat. 10. M. tubiflora. 



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

 limb and throat. 11. M. foliosa. 



III. PANICULATAE. 



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



Corolla about 1 cm. long; stem sparingly pubescent. 



Calyx-lobes lance-linear to lanceolate, acuminate. 13. M. paniculata. 



Calyx-lobes oblong-lanceolate, acutish. 14. M. toyabensis 



