f650 



Heller: Plants from Western North America 



; This is one of the western plants commonly referred to either 

 .the eastern M. panindata or the far nortliern M. Siba-lrn ■ 



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Mertensia pratensis sp. nov. 



I 



Stems usually several from a thick rootstock; 3-4 dm. high, 



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fc> 



S"- H'^ 



ones 7-12 cm. Ion- including the petiole, the blade oval, obtuse or 

 acutish, 3-4.5 cm. Ion- 2 cm. wide: stem leaves lanceolate 

 'Shortly acuminate, all but the lowest sessile: inflorescence com- 

 pact pubescent with short Oppressed hairs, especially the mar-iiis 

 ■of the calyx lobes : pedicels slender, usually very short : calyx 

 3-4 nim- long, parted almost to the base, the divisions oblon- o,- 

 hnear-lanceolatc : corollas blue or pink, 17 mm; long,' half of 

 which length IS tube, this 3 mm. wide, the upper dilated portion 6 

 or 7 mm. wide, with short, broad rounded lobes. . ■ • 



mead 



miles east of Santa Fc, June 2, i 897. The type is in the herbarium 

 of the New York Botanical Garden. 



■ It was growing on the banks of Santa Fc- creek, in company 

 with J/. J'cm//,n, but is easily distinguished from that good .species 

 by Its taller growth, weaker stems, thin leaves, much smaller 

 calyx, and larger flowers. It was distributed by mc as " Mcrh'us/a 



■Si/'irica." 



Mertensia MacD 



_ Plant glabrous throughout, the upper part pruinose : stems 

 stout, clustered from a thick rootstock, about 20 cm. high stout 

 sparingly branched above, the branches very short ; leaves glab- 

 rous, thin-coriaccous, ovate, or some oval, ranging from 3-5 cm 

 in length, 1-2.5 cm. in width, the lower ones contracting into 

 broad petioles, rounded at the apex, the upper ones sessile and 

 more acute : inflorescence secund ; peduncles short and stout, the 

 longest only slightly over i cm. in length ; pedicels 5 mm. or 1 



or less 



in length, rather stout : calyx broadly campanulate or cup-shaped 

 about 6 mm. high, and equally broad, the triangular-lanceolate 

 lobes occupying two-thirds of the total length: corolla blue 12 



iipp 



portion slightly dilated, 4 mm. wide at the top; corolla lobes 



stamens 



style persistent, mcluded in flower, but apparently elongating In 



J T 



Mormon Lake 



