7o 



HYDROIMIYLL.U'KAK. 



Vol III. 



6. Phacelia hirsuta Xutt. Hairy Phacelia. 

 Fig- 3495- 



Phacelia hirsuta Xutt. Trans. Am. Phil. Soc. (II.) 



5: 191. 1834-37. 

 Phacelia parviflora var. hirsuta A. Gray, Proc. Am. 



Acad. 10 : 321. 1S75. 



Similar to the preceding species but usually 

 stouter and larger, hirsute-pubescent. Leaves 

 petioled, pinnatifid or deeply pinnately divided 

 into 5-9 oblong obtuse usually entire segments, 

 or the upper 3-5-lobed or entire, sessile ; racemes 

 rather dense, scorpioid when unfolding; flowers 

 blue, 6"-y" broad ; calyx-segments oblong-Iancco- 

 late, hirsute; corolla rotate-campanulate, its ap- 

 pendages short ; ovules 3-4 on each placenta ; 

 stamens scarcely exserted; capsule globose, 4-8- 

 seeded. 



In dry soil, Virginia to Georgia, west to Missouri, 

 Kansas and Texas. April-June. 



7. Phacelia Covillei S. Wats. Coville's 

 Phacelia. Fig. 3496. 



Phacelia Covillei S. Wats, in A. Gray, Man. Ed. 

 6, 360. 1890. 



Annual, similar to the two preceding species, 

 branched from the base, pubescent; branches 

 very slender, weak, 6-12' long. Leaves deeply 

 pinnatifid or pinnately divided into 3-7 oblong 

 or obovate, obtuse segments ; racemes only 

 1-5-flowered: pedicels filiform, 6"-8" long; 

 calyx-segments linear, elongating in fruit; 

 corolla tubular-campanulate, about 3" long and 

 broad when expanded ; filaments glabrous ; 

 anthers not exserted; appendages of the co- 

 rolla obsolete ; capsule globose, 1 -J "-2" in diam- 

 eter; fruiting pedicels recurved. 



Along the Potomac River above Washington, 

 D. C., and in Illinois. April-May. 



Phacelia Purshii Buckl. Pursh's Phacelia. Fig. 349" 



Phacelia Purshii Buckl. Am. Journ. Sci. 45: 171. 

 1843. 



Annual, pubescent ; stem erect, usually much 

 branched, 6-18' high. Lower and basal leaves 

 petioled, 1J-3' long, pinnately parted or pin- 

 natifid into 9-15 oblong or lanceolate, acute or 

 obtusish, entire or sometimes incised segments ; 

 upper leaves sessile, with fewer segments ; ra- 

 cemes strongly i-sided, 10-20-flowered, much 

 elongated in fruit; pedicels 3"-l2" long; calyx- 

 segments lanceolate or linear-lanceolate; corolla 

 5"-6" broad, blue or white, nearly rotate, not 

 appendaged within, its lobes fimbriate ; filaments 

 slightly exceeding the corolla ; ovules 2 on each 

 placenta; capsule globose-ovoid. 



In moist woods or thickets. Pennsylvania to Min- 

 nesota, south to North Carolina. Alabama and Mis- 

 souri. Ascends to 2000 ft. in Virginia. April-June. 



