4 8 



HYDROPHYLLACEAE. 



[Vol. III. 



6. Phacelia hirsuta Nutt. Hairy 

 Phacelia. (Fig. 3007.) 



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



5: 191. 1834-37. 

 Phacelia parviflora var. hirsuta A. Gray, Proc. 



Am. Acad. 10: 321. 1875. 



Similar to the preceding species but usually 

 stouter and larger, hirsute-pubescent. Leaves 

 petioled, pinuatifid or deeply pinnately divided 

 into 5-9 oblong obtuse usually entire segments, 

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

 cemes rather dense, scorpioid when unfolding; 

 flowers blue, f>"-f broad; calyx-segments ob- 

 long-lanceolate, hirsute; corolla rotate-cam- 

 panulate, its appendages short; ovules 3-4 on 

 each placenta; stamens scarcely exserted; cap. 

 sule globose, 4-8-seeded. 



In dry soil, Virginia to Georgia, west to Missouri 

 and Texas. April-June. 



7. Phacelia Covillei S. Wats. 

 Coville's Phacelia. (Fig. 3008.) 



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 / -i2 / long. 

 Leaves deeply pinnatifid or pinnately di- 

 vided into 3-7 oblong or obovate, obtuse seg- 

 ments; racemes only 1-5-flowered; pedicels 

 filiform, 6 // -iS // long; calyx-segments linear, 

 elongating in fruit; corolla tubular-campanu- 

 late, about 3 // long and broad when ex- 

 panded; filaments glabrous; anthers not ex- 

 serted; appendages of the corolla obsolete; 

 capsule globose, i^ // -2 // in diameter; fruit- 

 ing pedicels recurved. 



Along the Potomac River above Washington, 

 D. C. April-May. 



8. Phacelia Purshii Buckl. Pursh's 

 Phacelia. (Fig. 3009.) 



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



1843- 



Annual, pubescent; stem erect, usually much 

 branched, 6 / -i8 / high. Lower and basal leaves 

 petioled, i>2 / ~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 // -i2 // 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 

 Minnesota, south to North Carolina, Alabama and 

 Missouri. Ascends to 2000 ft. in Virginia. April- 

 June. 



