972 HY DROLEACEAE 
Calyx-lobes oblong: corolla about 8 mm. broad ; lobes laciniate. ll. P. Boykinii. 
Calyx-lobes linear : corolla about 4 mm. broad ; lobes toothed. 12. P. Bicknellii. 
b. Pedicels fully twice as long as the calyx-lobes at maturity. 
Corolla blue or rose: stems erect. 13. P. Purshii. 
Corolla white or pinkish : stems spreading or decumbent. 14. P. fimbriata. 
l. Phacelia dissécta (A. Gray) Small. Annual, finely hirsute. Stems 3-5 dm. 
tall, sometimes branched above: leaves 5-10 cm. long ; blades 2-divided or parted, the 
segments mostly acute, toothed or incised : calyx slightly bristly ; lobes linear, about 5 
mm. long: corolla about 10 mm. broad; lobes entire : capsules subglobose, barely j as 
long as the calyx-lobes. [P. congesta var. dissecta A. Gray. | 
On dry hills and shaded rocks, Texas. Spring. 
2. Phacelia congésta Hook. Annual, softly hirsute or cinereous. Stems 1-7 dm. 
tall, simple or sparingly branched: leaves 5-12 cm. long; blades pinnately divided or 
parted, the segments blunt, 3-7 with smaller ones interposed, coarsely toothed or incised : 
calyx bristly ; lobes linear to linear-spatulate, 3-4 mm. long, acute: corolla 6-8 mm. 
broad ; lobes rounded, 3 as long as the tube : capsules ovoid, 3 mm. long, minutely hirsute. 
About thickets, Texas. Spring. 
3. Phacelia bipinnatífida Michx. Biennial, glandular-pubescent, or softly hirsute 
below, often heavy scented. Stems often decumbent, 1-6 dm. long, branching, sometimes 
diffuse : leaf-blades pinnately divided ; segments incised or pinnatifid, acute or acuminate, 
thinnish ; petioles longer than the blades except the upper ones: pedicels longer than the 
calyx at maturity : calyx hirsute; lobes linear-subulate, 4-6 mm. long, acute: corolla 
violet-blue, 1.5-2 em. broad ; lobes rounded, longer than the tube ; appendages conspicu- 
ous: filaments sparingly villous, exserted : style exserted : capsules ovoid-globose, 5-6 
mm. long, apiculate, hairy. l 
On dampslopes and thickets, Ohio to Illinois, Virginia, Georgia and Alabama. Spring and summer. 
4. Phacelia brevístylis Buckl. Biennial, softly hirsute below, glandular-pilose 
above. Stems 1-4 dm. tall, branched : leaf-blades pinnately divided, the segments coarsely 
incised or pinnatifid : pedicels longer than the calyx, at maturity : calyx bristly ; lobes 
linear or linear-subulate, 5-6 mm. long, acute: corolla 5-8 mm. broad ; lobes rounded, 
shorter than the tube ; appendages conspicuous : filaments delicately pubescent, included : 
styles included : capsules depressed, 4-5 mm. long. 
In shaded slopes, North Carolina to Alabama. Spring and summer. 
5. Phacelia glàbra Nutt. Annual, sparingly pubescent. Stems simple or branched at 
the base ; branches erect or ascending, 0.5-1.5 dm. long: leaves 0.5-2.5 cm. long, the basal 
with pinnate blades as long as the petioles or longer ; stem-leaves variable, the lower re- 
sembling the basal, the upper sessile, pinnatifid ; segments rather obtuse : racemes few- 
flowered : pedicels longer than the calyx at maturity : calyx sparingly bristly ; lobes ob- 
long, 2.5-3 mm. long, obtuse: corolla 6-8 mm. broad; lobes broadly ovate, undulate ; 
appendages narrow : filaments exserted, glabrous : capsules subglobose, 3 mm. long. 
On prairies, Arkansas and Texas. Spring. 
6. Phacelia dùbia ( L.) Small. Annual, bright green, sparingly pubescent. Stems 
branched at the base; branches 0.5-4 dm. long, minutely glandular as well as appressed- 
pubescent, often zigzag : leaves pubescent with appressed hairs and less glandular than the 
branches ; basal leaves petioled, 1-3 cm. long, the segments varying from oval to orbicular ; 
stem-leaves nearly sessile, 0-1.5 cm. long, with 3-5 segments, the terminal one oblong to 
obovate, acute : flowers rather few on pedicels 0.5-1 cm. long : calyx-lobes oblong, 3-4 mm. 
long, slightly revolute, rather obtuse : corolla 7-11 mm. long, pale lilac to greenish near 
the center ; lobes broadly ovate, undulate, often blotched near the base : filaments pubescent, 
lilac at the tips: capsules oblong-orbicular, 2.5-3 mm. long. [P. parviflora Pursh. ] 
On banks, Pennsylvania to Kansas, Georgia and Texas. Spring. 
7. Phacelia hirsita Nutt. Annual or biennial, hirsute. Stems simple, or branched 
at the base; branches 0.5-3 dm. long: leaves 2-7 cm. long; primary ones gone e oF 
oblong-spatulate ; basal and lower stem-leaves with pinnate blades and slender tio E : 
upper leaves sessile, pinnatitid, the segments acute, often curved : racemes many-How ed 
2-10 em. long : pedicels somewhat longer than the calyx at maturity : calyx bristly i Lie 
oblong or linear-spatulate : corolla dark-purple or purplish blue, 12-15 mm. broad ; a 
rounded, undulate ; appendages narrow : filaments barely exserted : capsules rather broader 
than high, 3.5-4 mm. long. 
In dry soil and open woods, Virginia to Missouri and middle Georgia. Spring. 
8. Phacelia lAxa Small. Annual, sparingly hirsute. Stems branched at ee Dei 
branches spreading, 1-3 dm. long, simple or forked, slender: leaves 2-6 cm. long ; 
. 
pinnately lobed, the lower ones long-petioled, the upper short-petioled ; lobes entire, as- 
