544 BORAGINACEAE 



high, cinereous throughout, pubescence more or less spreading below, appressed above. Basal 

 leaves oblanceolate, 5-10 mm. long, rounded or obtuse at apex, abruptly narrov»^ed to a rather 

 short winged petiole, thinly pubescent above, glabrous beneath except the midrib; stem-leaves 

 oblong, sessile, rather densely appressed-pilose ; raceme simple, extending to near the base of 

 the branches, bracteate below, naked above ; pedicels ascending, rather stout, 1 mm. long or less ; 

 fruiting calyx 3-4 mm. long, the lobes triangular-subulate, about equaling or slightly longer 

 than the tube, appressed-pubescent, the tube also clothed with spreading hooked bristles ; style 

 shorter than the nutlets, these buff-colored; corolla blue. 



Well established on sandy plains and in open pine forests. Arid Transition Zone; Stevens County, north- 

 eastern Washington; also in eastern North America; native of Europe and northern Asia. May-June. 



8. Myosotis versicolor (Pers.) Smith, Yellow and Blue Scorpion Grass. 



Fig. 4189. 



Myosotis arvcnsis var. versicolor Pers. Syn. PI. 1: 156. 1805. 



Myosotis versicolor Smith, Engl. Bot. 7: pi. 480. fig. 1. 1798, and 36: under pi. 2558. 1814. 



Annual, stems branching from the base or commonly simple below and branching above, 

 15-30 cm. high, hirsute below with spreading hairs, appressed-pubescent above with straight 

 hairs. Basal leaves spatulate, narrowing to a petiole often as long as the blade, stem-leaves 

 oblong, sessile, obtuse at apex, or the uppermost reduced, oblong-lanceolate and acute; racemes 

 loosely flowered; pedicels usually ascending, much shorter than the fruiting calyx; calyx-tube 

 with spreading, minutely hooked hairs, the lobes narrowly linear-lanceolate, rather densely 

 appressed-pubescent; corolla pale yellow changing to violet and blue, limb about 2 mm. broad; 

 style longer than the mature nutlets. 



Fields, waste places and roadsides, mainly Humid and Arid Transition Zones; Olympic Peninsula and 

 Whatcom County, Washington, to Sonoma and Plumas Counties, California; also, but more sparingly, east of 

 the Cascades; Stevens County, Washington, and Wallowa County, Oregon; naturalized from Europe. April- 

 July. 



11. MERTENSIA Roth, Catal. Bot. 1: 34. 1797. 



Perennial, glabrous or pubescent herbs, with broad, alternate leaves and rather larger 

 blue, purple or white flowers in terminal panicles, cymes or racemes. Calyx -lobes linear to 

 lanceolate, little enlarged in fruit. Corolla tubular-funnelform or trumpet-shaped, un- 

 appendaged or crested in the throat, the lobes little spreading. Stamens inserted on the 

 corolla-throat, included or slightly exserted, filaments flattened or filiform; anthers ob- 

 long or linear. Ovary 4-divided; style filiform. Nutlets erect, coriaceous, wrinkled 

 when mature, attached above their base to the convex or flattened receptacle. [Name in 

 honor of the German botanist, C. F. Mertens.] 



A genus of about 45 species, natives of the northern hemisphere, especially developed in western North 

 America. Type species, Mertensia pulmonarioides Roth. 



Corolla campanulate, not divided into a tube and limb. (.Neuranthia) 1. M. bella. 



Corolla not campanulate, divided into a tube and limb. iEumertensia) 

 Cauline leaves with lateral veins. 



Corolla-limb longer than the tube. 



Anthers rarely over 3 mm. long, usually straight; leaves glabrous above, pubescent beneath. 



2. M. paniculata boreahs. 



Anthers 4-5 mm. long, usually curved; calyx-lobes 5-7 mm. long. 3. M. platyphylla. 



Corolla-limb shorter than the tube or about equaling it. 



Calyx-lobes obtuse or acutish, ovate or oblong. 4. M. ciliata. 



Calyx-lobes acute, lanceolate or triangular; anthers 1.5-2.5 mm. long. 



5. M. umbratths. 



Cauline leaves without lateral veins; corolla-tube usually much shorter than the limb. 



Plants with stout elongated root. 6. M. oblongifolia. 



Plants with shallow-seated tuberous roots. 7. M. longiflora. 



1. Mertensia bella Piper. Oregon Lungwort. Fig. 4190. 



Mertensia bella Piper, Proc. Biol. Soc. Wash. 31: 76. 1918. 

 Mertensia siskiyouensis Applegate, Contr. Dudley Herb. 1: 154. 1930. 



Stem solitary from a globose tuber, 2-5 dm. high, slender, glabrous to sparsely pilose, simple 

 or with 1 or 2 short branches at the apex. Leaves elliptic to ovate, 2-5 cm. long, the uppermost 

 reduced and lanceolate, the lower obtuse or rounded at apex, glabrous beneath, strigose above; 

 racemes 2-4, in usually long slender peduncles in the upper axils; pedicels 6-12 mm. long, 

 strigose; calyx-lobes 3-4 mm. long, linear-lanceolate, acute, strigose; corolla bright blue, 5-7 

 mm. long; tube short, about half as long as the calyx, dilating into the broad campanulate 

 limb, lobes about 2 mm. long, broadly ovate ; style half as long as the corolla. 



Moist slopes, mainly Canadian Zone; western slopes of the Cascades, Lane County, and the Siskiyou 

 Mountains, Josephine County, Oregon. Type locality: Horse Pasture Mountain, Lane County, Oregon. May- 

 July. 



