2(1). Distribution in eastern Oklahoma eastward 2. P. reptans. 



2. Distribution New Mexico and Arizona (3) 



3(2). Stem usually pubescent nearly or quite to the base, copiously so above; 

 leaflets elliptic to ovate-oblong, acutish; corolla lobes obtuse or 

 mucronulate 3. P. foliosissimum. 



3. Stem glabrous or nearly so toward the base, sparsely pubescent above; leaflets 



usually narrowly lanceolate, acute to acuminate; corolla lobes 

 acutish 4. P. filicinum. 



1. Polemonium pauciflonim Wats. 



Perennial to 5 dm. tall, musky-glandular above, the stem sparsely to copiously 

 branched; leaves alternate, to 15 cm. long, with basally expanded petiole and 

 oblong pinnately compound blade; leaflets 11 to 21, the terminal confluent, to 25 

 mm. long and 6 mm. wide; flowers paired or solitary, projecting horizontally, the 

 peduncle to 45 mm. long; sepals at anthesis about 15 mm. long, enlarging in fruit, 

 united one third their length, tapering to a callous tip; corolla yellowish or green- 

 ish, often suffused with purple, funnelform, the tube to 3 cm. long and the limbs 

 to 1 cm. long; stamens zygomorphic. about equaling the corolla tube, pilose at the 

 short-adnate base; stigmas exceeding the anthers; seeds usually fusiform and angu- 

 late, several in each cell of capsule. P. Hinckley i Standi. 



In wet soil along streams and in springy places, in wooded canyons of Davis Mts. 

 in the Tex. Trans-Pecos, July-Aug.; also n. Chih. 



The Texas plant has been segregated as subsp. Hinckleyi (Standi.) Wherry pri- 

 marily on the basis of its thinner stem-pubescence and longer sepals than in subsp. 

 paucifiorum. 



2. Polemonium reptans L. 



Perennial from a woody caudex; stems slender, erect, 2-4 dm. long, ascending 

 or eventually diffuse, branched above, pubescent or glabrous; basal leaves long- 

 petioled; cauline leaves short-petioled or the upper sessile; leaflets lanceolate to 

 oblong or elliptic, usually 2-4 (or occasionally 7) cm. long, those of the principal 

 leaves 7 to 17. of the upper 3 or 5; panicles few-flowered, loose and open; pedicels 

 at anthesis almost as long as or longer than the calyx; calyx mostly 5-6 mm. long, 

 the broadly triangular lobes nearly as long as the tube; corolla 1-1.5 cm. long, 

 lobed to about the middle with entire lobes; stamens subequal to or shorter than 

 the corolla. 



In springy places, in wet alluvial soils along streams, wet meadows and grassy 

 slopes and rich moist woods in e. Okla. (Mayes and McCurtain cos.), Apr.-June; 

 N. Y. to Minn., s. to Va., Ala., Ark. and Okla. 



3. Polemonium foliosissimum Gray. Fig. 644. 



Stems 3-9 dm. high, erect, simple or terminally branched, villous to glabrous, 

 often glandular above; leaves little reduced upwards; leaflets 12-25 mm. long, 

 commonly confluent near tip, ovate-oblong or lanceolate to oblong-lanceolate, 

 acutish; inflorescence a broadly open corymbose cyme; calyx 6-10 mm. long, the 

 lobes as long as or longer than the tube, often glandular; corolla 8-20 mm. long, 

 funnelform-campanulate to rotate-campanulate, the obtuse or mucronulate lobes 

 about twice as long as the tube, purplish to white; stamens included. Incl. subsp. 

 albiflorum (Eastw.) Brand, P. grande Greene. 



In wet soil along streams and about seepage slopes, wet meadows and woods, 

 in N.M. (Santa Fe, San Miguel and Otero cos.) and Ariz. (Apache and Coconino 

 COS.), June-Aug.; also Colo, and Ut. 



The Arizona plants are commonly referred to subsp. rohustum (Rydb.) Brand, 

 with violet corolla 12-15 mm. long, included styles and copious pubescence. 



1371 



