Myriophyllum. Proserpinaca.] HALORAGES. 857. 
122. Hook. Comp. Bot. Mag. 1. 46. Nutt. Fl. Ark. 141. Torr. & Gray, Fl. 1. 529. 
Eat. & Wr. 324. Gray, Pl. Lindh. 191; Pl. Wright. 1. 72 & 2.59; Manual, 175. 
Dietr. 5. 8302. Chapman, 143. 
Potamogeton verticillatum. Walter, 90. 
M. hippuroides. Nutt.; Torr. & Gray, Fl. 1.530. Walp. Rep. 2.98. Dietr. 
5. 802. Gray, Proc. Am. Acad. 8. 383. Brew. & Wats. Bot. Calif. 1. 215. 
M. scabratum. Cham. in Linnea, 4. 506. 
M.laxum. Shuttleworth; Chapman, 143. Young, Fl. Texas, 272. 
M. scabratum. Michx. Fl. 2.190. Persoon, 2. 563. Poir. Dict. 8. 686. Pursh, 
274. Elliott, 2.588. Spreng. Syst. 38. 853. DC. Prodr. 3.69. Don, Mill. 2. 704. 
Hook. l.c. 1.46. Nutt. Fl. Ark. 141. Torr. & Gray, Fl. 1.529. Eat. & Wr. 
825. Dietr. 5. 302. Chapman, 144. Gray, Manual, 175; Hall’s Pl. Texas, 9. 
Potamogeton pinnatum. Walter, 90. 
M. spicatum. Linn. Spec. 992. See syn. in Willd. Spec. 4. 406; Ledeb. Fl. 
Ross. 2. 118; Pritzel, Ind. Ic. Bot. 1. 732 & 2. 190. — Michx. Fl]. 2. 190. Poir. Dict. 
8. 684. Pursh, 274. Bigel. Fl. Bost. 345. James, Long’s Exp. 2.142. Richard. 
Frankl. Journ. 23. Spreng. Syst. 3. 853. Torrey, Compend. 354; Fl. N. Y. 1. 242; 
Nicol. Rep. 150. DC. Prodr. 3. 68. Hook. Fl. Bor.-Am. 1. 216. Don, Mill. 2. 703. 
Beck, Bot. 122. Nutt. Fl. Ark. 141. Torr. & Gray, Fl. 1. 529. Eat. & Wr. 324. 
Engelm. Pl. Upp. Miss. 192. Hook. f. Arct. Pl. 291 & 328. Pl. Bourgeau, 256. 
Gray, Manual, 175. Brew. & Wats. Bot. Calif. 1. 215. 
M. tenellum. Bigel. Fl. Bost. 2 ed. 346. Torrey, Compend. 355; Fl. N. Y. 1. 243. 
DC. Prodr. 3. 68. Hook. Fl. Bor.-Am. 1. 216. Don, Mill. 2. 704. Beck, Bot. 122. 
Torr. & Gray, Fl. 1. 530. Eat. & Wr. 325. Dietr. 5. 302. Gray, Manual, 175. 
M. verticillatum. Linn. Spec. 992. See syn. in Willd. Spec. 4. 407; Ledeb. FI. 
Ross. 2. 118; Pritzel, Index Icon. Bot. 1. 782. — Michx. Fl. 2. 190. Poir. Dict. 
8. 685. Pursh, 274. Nutt. Genera, 2.211. Elliott, 2.588. Spreng. Syst. 3. 853. 
Torrey, Compend. 355; Ann. Lyc. N. Y. 2. 252; Fl. N. Y. 1. 242; Bot. Wilkes, 300. 
DC. Prodr. 3. 68. Hook. Fl. Bor.-Am. 1. 216. Don, Mill. 2. 703. Beck, Bot. 122. 
Torr. & Gray, Fl. 1. 529. Eat. & Wr. 324. Parry, Pl. Minn. 612. Chapman, 143. 
Pl. Bourgeau, 256. Gray, Manual, 175. Watson, King’s Rep. 5.102. Coulter, 
Hayd. Rep. 1872, 766. 
PROSERPINACA palustris. Linn. Spec. 88. Hill, Veg. Syst. 25, t. 60, f. 1. 
Walter, 84. Lam. Ill. 1. 214, t.50,f. 2. Willd. Spec. 1. 488. Michx. Fl. 1. 76, 
excl. var. Jussieu, Ann. Mus. 3. 320, t. 30, I (Koenig & Sims, Ann. Bot. 1. 535, 
t.12,I). Persoon, 1.111. Poir. Dict. 8.118. Bigel. Fl. Bost. 48. Elliott, 1. 181. 
Roem. & Schult. Syst. 22. 873. Torrey, Fl. U. S.161; Fl. N. Y. 1. 241; Mex. 
Bound. 66. Spreng. Syst. 1.416. DC. Prodr. 8.67. Hook. Fl. Bor.-Am. 1. 215; 
Comp. Bot. Mag. 1. 26. Don, Mill. 2.702. Nutt. Fl. Ark. 141. Beck, Bot. 121. 
Dietr. 1.416. Torr. & Gray, Fl. 1. 528. Eat. & Wr. 376. Gray, Pl. Wright. 1. 72 
& 2.59; Manual, 175; Hall’s Pl. Texas, 9. Chapman, 143. 
Trixis palustris. Gaertn. Fruct. 1. 115, t. 24, f. 8. 
P. pectinata. Lam. Ill. 1. 214,t.50,f1. Pursh, 92. Elliott, 1. 182. Roem. & 
Schult. Syst. 22 874 Torrey, Fl. U. S. 162; Fl. N. Y. 1. 241. Spreng. Syst. 1. 416 
DC. Prodr. 3.67. Don Mill. 2. 703. Beck, Bot. 121. Hook. Comp. Bot. Mag. 
1.46. Dietr. 1.416. Torr. & Gray, Fl. 1.528. Eat. & Wr. 376. Bigel. Fl. Bost. 
3 ed. 50. Gray, Pl. Lindh. 191; Manual, 175. Chapman, 143. 
P. palustris, var. 8B. Michx. Fl. 1. 76. Poir. Dict. 8. 118. 
Myriophyllum fulvescens. Bertoloni, Bot. Mise. 16. 23, t. 1 (Bot. Zeit. 14. 785) ; 
fide Gray, Am. Journ. Sci. 2. 24. 287. 
