Helson — N'eio Plants from Nevada. 97 



woody branched crown, 1-2 dm. high; leaves oblong or oblanceolate, 

 2-3 cm. long; the upper sessile, the lower tapering into a slender petiole; 

 thyrsus narrow, obscurely glandular or viscid; calyx short, not more 

 than 2-3 mm. long; the sepals broadly oval or obovate, obtuse but some- 

 times with a small apiculation; corolla 12-15 mm. long, moderately and 

 gradually dilated, the limb very short and but slightly 2-lipped, its lobes 

 obtuse; anthers horse-shoe shaped, the low^er half of the cells remain- 

 ing closed and saccate, minutely denticulate-ciliate on the margins of 

 the dehiscence; the sterile filament glabrous and not dilated. 



Most nearly- allied to F. RuezU Kegel but with broader leaves, narrower 

 inflorescence (not at all paniculate) and very different sepals and corolla. 

 l^h\siswQry T^vdhd>My Pentstemon RoezUviolaceusT. Q. Brand. I there- 

 fore use his varietal name and give the additional description as above. 



Secured by Prof. Kennedy at Newcomb Lake, June S, 1901, No. 15. 



Pentstemon Kennedy! sp. 



nov. 



Perennial from a somewhat woody branched root-like caudex, glab- 

 rous and inclining to glaucous, 2-4 dm. high; stems mostly simple and 

 singly from the crowns, erect; leaves narrowly oblong or lanceolate; the 

 basal tapering gradually into a slender petiole; the mid-stem sessile by 

 the narrowed base; the upper becoming linear and bract-like; inflores- 

 cence narrow; calyx about 1 cm. long; sepals lanceolate, scarious-mar- 

 gined below, the somewhat acuminate upper half tinged with purple: 

 corolla about 3 cm. long, somewhat ventricose, violet-blue (possibly va- 

 rying to purple); anthers glabrous, dehiscent from base to apex but not 

 confluent, slightly if at all divaricate; sterile filament glabrous and but 

 slightly dilated. 



This is one more segregate from the P. glaher group. Difficult as it is 

 to say what are valid specific characters, it becomes almost necessary to 

 designate as distinct those forms which the collector and the amateur 

 refuse to unite. On the other hand it seems like folly, in most cases at 

 least, to separate forms upon details which require the compound micro- 

 scope for detection. A difference that is reasonably constant and suffi- 

 ciently characteristic to attract the attention of a trained observer in 

 the field cannot well be ignored. Usually, as in this case, less obvious 

 details will be found to confirm the field impressions. In separating 

 this form from P. glaher Pursh. it may tend to clearness to recall the 

 following characters of the latter: 



Leaves oblong-lanceolate below to ovate-lanceolate above; sepals short, 

 not more than one-sixth as long as the corolla, orbicular-ovate, mostly 

 abruptly short-acuminate, noticeably erose on the scarious sides; anthers 

 more or less short-hirsute; the cells becoming divaricate or explanate: 

 sterile filament dilated, usually somewhat emarginate, stiffly short hir- 

 sute near the apex. 



The excellent specimens that are taken as the type (No. 736) were 

 collected by Prof. Kennedy at Truckee Pass, Virginia Mts., Waslioe Co.. 

 Nevada, June 6, 1903. 



