HYDROLEACEAE 973 



cending : racemes lax, few-flowered, 4-12 cm. long : pedicels spreading or recurved, much 

 longer than the calyxes at maturity : calyx sparingly bristly ; lobes obovate or subor- 

 bicular, 4-6 mm. long, obtuse, ciliate, variable in same calyx : corolla lilac or light blue, 

 1 cm. broad ; lobes rounded, entire, about as long as the tube ; appendages present : 

 stamens glabrous, shorter than the corolla : capsules suborbicular, hirsute near the top. 

 On the coast, Texas. Spring. 



9. Phacelia patuliflora (Engelm. & Gray) A. Gray. Annual, rather densely 

 hirsute. Stems branching at the base ; branches often spreading, l-o dm. long : leaves 2-8 

 cm. long ; blades pinnatifid, the lobes incised or toothed ; basal or lower stem-leaves with 

 petioles ; the upper sessile or somewhat clasping : racemes rather few-flowered : pedicels 

 slender, glandular-pilose, longer than the calyxes at maturity : calyx bristly ; lobes oblong 

 or linear-oblong, 6-7 mm. long, obtuse : corolla deep blue, yellow within, 2 cm. broad ; 

 lobes suborbicular, undulate ; appendages narrow : filaments barely exserted : capsules 2.5- 

 3.5 mm. long. 



On prairies, Texas. Spring. 



10. Phacelia strictiflora (Engelm. & Gray) A. Gray. Annual, densely hirsute. 

 Stems simple, or branched at the base ; branches often decumbent, 1-3 dm. long : leaves 

 strigose, 2-6 cm. long ; blades pinnatitid, the lower and basal petioled, the upper sessile : 

 racemes usually many-flowered, 2-10 cm. long : pedicels about as long as the calyxes at ma- 

 turity : calyx hispid ; lobes oblong to linear-spatulate, 5-10 mm. long: corolla 1.5-2 cm. 

 broad ; lobes rounded, erose ; appendages narrow : filaments barely exserted : capsules sub- 

 globose, 4-5 mm. long, pubescent near the top. 



On prairies, Texas. Spring. 



11. Phacelia Boykinii (A. Gray) Small. Annual, sparingly strigillose. Stems 

 erect, more or less branched, 1-2 dm. tall, glabrate in age : leaves 1-3 cm. long ; blades 

 pinnatifid, rough, the lower ones petioled, the upper sessile, the segments obtuse, abruptly 

 pointed or mucronate : racemes many-flowered, 3-7 cm. long : pedicels erect, about as long 

 a.s the calyxes at maturity : calyx bristly ; lobes oblong, 3-3.5 mm. long, prominently nerved, 

 obtuse : "corolla bluish, 7-8 mm. broad ; lobes oblong-obovate, laciniate ; appendages 

 obsolete: filaments exserted, sparingly villous : capsules ovoid-globose, 2.5 mm. in di- 

 ameter. [^P. fimbriafa Viu: £oi/l:iriii A. Gray. ^ 



In dry soil, Columbus, Georgia. Spring. 



12. Phacelia Bickn611ii Small. Annual, strigose. Stems branched at the base ; 

 branches erect or ascending, 1-3 dm. tall, commonly branching : leaves 1-4 cm. long ; 

 blades pinnatifid, the lower ones petioled, the upper sessile and somewhat clasping, the seg- 

 ments acute : racemes many-flowered, 4-10 cm. long : pedicels about as long as the calyxes 

 at maturity : calyx bristly ; lobes linear, 5 mm. long, revolute : corolla pale blue, 4 mm. 

 broad ; lobes oblique, irregularly toothed, pubescent without ; appendages obsolete : 

 filaments included, about as long" as the tube, glabrous : capsules subglobose, 2 mm. in 

 diameter : seeds sharply reticulated, reddish brown. 



In barren soil, Tennessee. Spring. 



13. Phacelia Purshii Buckl. Annual, sparingly pubescent. Stems 1-3 dm. tall, 

 simple or diflusely branched: leaves (cauline) 1-8 cm. long; blades pinnatifid, short- 

 petioled or the upper ones sessile ; segments oblong or lanceolate, acute or acuminate, en- 

 tire or toothed : pedicels 3-4 times as long as the calyxes at maturity, or the upper ones 

 shorter : calyx bristly ; lobes linear to oblong-spatulate, 4-5 mm. long, ciliate : corolla 

 light blue or rarely rose, 1.5 cm. broad ; lobes rounded, fimbriate ; appendages present : 

 filaments villous : capsules ovoid, about 4 mm. long. 



In thickets or woods, Pennsylvania to Minnesota, North Carolina, Alabama and Missouri. Spring. 



14. Phacelia fimbriata Michx. Annual, sparingly pubescent at least below. Stenas 

 weak, simple or branched at the base, spreading: leaves 2-10 cm. long; basal with pin- 

 nate blades, the terminal segment much larger than the rest, usually lobed ; stem-leaves 

 variable, the lower ones resembling the basal, with long petioles, the upper ones pinnatifid, 

 sessile ; segments acute : racemes ffew-flowered : pedicels glabrate or softly pubescent, sev- 

 eral times longer than the calyxes at maturity : calyx bristly ; lobes oblong or oblong-spatu- 

 late : corolla white or pinkish, 1.5 cm. broad ; lobes fimbriate : filaments included, spar- 

 ingly villous : capsules ovoid-spheroidal, 5 mm. high, sparingly pubescent. 



On mountain slopes, Virginia to Alabama. Spring. 



5. MARILAUNIDIUM Kuntze. 

 Annual or perennial herbs, with pubescent foliage and forking stems. Leaves alter- 

 nate : blades entire, sometimes decurrent. Flowers solitary in the axils. Calyx sessile or 



