5. Phacelia Dubia (L.) Small. Small-Flowered Phacelia

Fig. 3494

Polemonium dubium L. Sp. Pl. 163. 1753. Phacelia parviflora Pursh, Fl. Am. Sept. 140. 1814. Phacelia dubia Small, Bull. Torr. Club 21: 303. 1894.

Annual, puberulant or glabrate, branched from the base, the branches very slender, erect or ascending, 5'-12' high. Lower and basal leaves petioled, 1'-2' long, pinnatifid or pinnately divided into 3-5 oblong obtuse entire or dentate segments, or rarely merely dentate, or even entire; upper leaves much smaller, sessile, less divided; flowers light blue or white, racemose, 4"- 5" broad; racemes 5-15-flowered, elongated in fruit; pedicels 3"-7" long; calyx-lobes oblong or oblong-lanceolate; corolla rotate-campanulate, the appendages obsolete; filaments pubescent; anthers slightly exserted; ovules 4-8 on each placenta; capsule globose, 1 1/2" in diameter, 6-12-seeded; fruiting pedicels ascending.

In moist soil, New York and Pennsylvania to Georgia, Missouri, Kansas and Texas. Ascends to 2000 ft. in Virginia. April-June.

5 Phacelia Dubia L Small Small Flowered Phacelia 1655 Phacelia Dubia L Small Small Flowered Phacelia 166

6. Phacelia Hirsuta Nutt. Hairy Phacelia

Fig. 3495

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, 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"-7" broad; calyx-segments oblong-lanceolate, hirsute; corolla rotate-campanulate, its appendages 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 corolla obsolete; capsule globose, 1 1/2"-2" in diameter; fruiting pedicels recurved.

Along the Potomac River above Washington, D. C., and in Illinois. April-May.

7 Phacelia Covillei S Wats Coville s Phacelia 167

8. Phacelia Purshii Buckl. Pursh's Phacelia

Fig. 3497

Phacelia Purshii Buckl. Am. Journ. Sci. 45: 171. 1843.

Annual, pubescent; stem erect, usually much branched, 6'-18' high. Lower and basal leaves petioled, 1 1/2'- 3' long, pinnately parted or pinnatifid into 9-15 oblong or lanceolate, acute or obtusish, entire or sometimes incised segments; upper leaves sessile, with fewer segments; racemes strongly 1-sided, 10-20-flowered, much elongated in fruit; pedicels 3"-12" 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.

8 Phacelia Purshii Buckl Pursh s Phacelia 168

9. Phacelia Fimbriata Michx. Fringed Or Mountain Phacelia

Fig. 3498

Phacelia fimbriata Michx. Fl. Bor. Am. 1: 134. 1803.

Annual, sparingly pubescent; stems simple or branched, ascending or diffuse, 6'-2o' long. Basal and lower leaves slender-petioled, 2'- 4' long, pin-nately divided into 5-9 orbicular obovate or oblong obtuse dentate or entire segments; upper leaves sessile, their segments oblong or lanceolate, acute; clusters loose, 3-12-flowered; pedicels 4"-15" long; flowers 4"-5" broad, white; calyx-segments linear to spatulate, obtuse; corolla rotate-campanulate, not appendaged within, its lobes strongly fimbriate; filaments pilose, about equalling the corolla; ovules 2 on each placenta; capsule depressed-globose, 2" in diameter.

In woods, mountains of Virginia to Alabama. May-June.

9 Phacelia Fimbriata Michx Fringed Or Mountain Pha 169