424 UMBELLIFERZ®. [Heracleum. Hydrocotyle. 
H. Spondylium. Nutt. Genera, 1. 181. James, Cat. 178. Torr. Ann. Lye. N. Y. 
2.207. Cham. & Schlecht. in Linnea, 1. 394. Hook. & Arn. Bot. Beechey, 142. 
Eat. & Wr. 267. Ledeb. Fl. Ross. 2. 322, in part. 
H. Panaces. Spreng. Syst. 1. 912, in part. 
H. auritum. Bischoff, Del. Sem. Hort. Heidelb. 1839 (Litt.-Ber. zu Linnea, 14. 
131). Walp. Rep. 2. 416. 
H. dulce, Fisch. in Ind. Sem. Petrop. 9, Suppl. 23 (Linnza, 18. 221). Ruprecht, 
Beitr. Fl. Russ. 2. 87. Walp. Rep. 5. 890. 
Var. vestitum. Torr. & Gray, Fl. 1. 632. Torrey, Bot. Wilkes, 323. 
H. Douglasii. DC. Prodr. 4. 193. Hook. Fl. Bor.-Am. 1. 270. Don, Mill. 3. 
343. Dietr. 2.972. Eat. & Wr. 267. 
HYDROCOTYLE Americana. Linn. Spec. 234. Hill, Veg. Syst. 5. 23, t. 10, 
f.1. Crantz, Umbel. 120. Lam. Dict. 38.152. Willd. Spec. 1. 1361. Thunb. Diss. 
Bot. 2.414. Michx. Fl. 1. 162. Persoon, 1. 301. Pursh, 190. Bigel. Fl. Bost. 67. 
Barton, Fl. Phil. 86. Spreng. Spec. Umbel. 3, t. 2, f. 3; Roem. & Schult. Syst. 6. 
346; Syst. 1. 876. Elliott, 1. 346. Torrey, Fl: U. S. 303; Fl. N. Y. 1. 262. Rich- 
ard, Hydrocot. in Ann. Sci. Phys. 4. 45, t. 55, f. 10. DC. Prodr. 4. 64. Hook. Fl. 
Bor.-Am. 1. 257. Don, Mill. 3.251. Beck, Bot. 140. Darling. Fl. Cestr. 183. 
Torr. & Gray, Fl. 1. 599. Dietr. 2. 928. Eat. & Wr. 277. Chapman, 158. Gray, 
Manual, 189. 
H. interrupta. Muhl.Cat.to. Elliott, 1. 345. Spreng. Syst.1.875. DC. Prodr. 
4. 59, in part. Don, Mill. 3. 248. Beck, Bot.140. Torr. & Gray, Fl. 1. 599, in part. 
Dietr. 2.926. Gray, Pl. Lindh. 209; Pl. Wright, 2.64; Manual, 190; Hall’s Pl. 
Texas, 11. Chapman, 159. 
H. vulgaris. Michx. Fl. 1. 161. Pursh, 190. Spreng. in Roem. & Schult. Syst. 
6. 544, in part. Torrey, Fl. U.S. 303. Hook. Fl. Bor.-Am. 1. 257. Eat. & Wr. 277. 
H, vulgaris, var. verticillata. Richard, Hydrocot. 27, in part. 
H. prolifera. Kellogg, Proc. Calif. Acad. 1.15. Brew. & Wats. Bot. Calif. 1. 254. 
H. vulgaris. Cham. & Schlecht. in Linnea, 1. 356, in part. 
H. interrupta. Torr. & Gray, Fl. 1. 599, in part. Boland. Cat. 13. 
H. natans. Torrey, Mex. Bound. 69. 
H. ranunculoides. Linn. f. Suppl. 177. Lam. Dict. 3.154. | Willd. Spee. 1. 
1363. Thunb. Diss. Bot. 2.415. Persoon, 1. 3802. Spreng. Spec. Umbel. 2, t. 1, 
f.2; Roem. & Schult. Syst. 6. 349, excl. var.; Syst. 1.877. Richard, Hydrocot. 
55, t. 58, f.18. Torrey, Fl. U.S. 304; Mex. Bound. 69; Bot. Wilkes, 313. Cham. 
& Schlecht. in Linnea, 1.378. DC. Prodr. 4. 65. Don, Mill. 8. 252. Darling. FI. 
Cestr. 597. Torr. & Gray, Fl. 1. 600. Dietr. 2. 928, Eat. & Wr. 277. Clos inGay, 
Fl. Chil. 3. 65. Gray, Pl. Wright. 2.64; Manual, 189. Chapman, 159. Kellogg, 
Proc. Calif. Acad. 1.14. Brew. & Wats. Bot. Calif. 1. 254. 
H. Americana. Walter, 113% Newberry, Pac. R. Rep. 6.75. Boland. Cat. 13. 
IT. cymbalarifolia. Muhl. Cat. 29. Elliott, 1. 346. Beck, Bot. 140. 
H.natans. Cham. & Schlecht. in Linnea, 1. 373; not Cyr. DC. Prodr. 4. 62, in 
part. Hook. & Arn. Bot. Beechey, 347. Torr. & Gray, Fl. 599, Boland. Cat. 13. 
H. repanda. Persoon, 1. 302. Pursh, 190. Poir. Suppl. 5. 702. Spreng. Spee. 
Umbel. 4, t. 2, f. 4; Roem. & Schult. Syst. 6. 349, excl. var.; Syst. 1.876. Richard, 
Hydrocot. 39, t. 57, f.14. Elliott, 1.347. Cham. & Schlecht. in Linnea, 1. 369. 
DC. Prodr. 4. 62. Don, Mill. 8.250. Hook. Comp. Bot. Mag.1.47. Torr. & Gray, 
Fl. 1. 600. Dietr. 2.927. Eat. & Wr. 277. Gray, Pl. Lindh. 209; Manual, 189; 
Hall’s Pl. Texas, 11. Chapman, 159. Referred to H. Asiatica, Linn., by Benth. 
Fl. Austral. 3. 347, and by Griseb. Fl. Brit. W. Ind. 307, as var. repanda. 
