412 UMBELLIFER2. [Angelica. Apium. 
A. lineariloba. Gray, l.c.7. 347. Brew. & Wats. Bot. Calif. 1. 266. 
A. lucida. Linn. Spec. 251. Hill, Veg. Syst. 6. 14, t. 12, f. 2. Crantz, Umbel. 
65. Jacquin, Hort. Vindob. 3. 16, t. 24. Lam. Dict. 1.173. Ait. Hort. Kew. 
1. 349. Willd. Spee. 1. 1480. Persoon, 1.316. Spreng. Umbel. 63; Roem. & 
Schult. Syst. 6. 604; Syst. 1.916. Torrey, Fl. U. S. 316. DC. Prodr. 4. 168. 
Hook. Fl. Bor.-Am. 1. 267. Beck, Bot. 147. Don, Mill. 3. 823. Torr. & Gray, Fl. 
1. 620. Eat. & Wr. 127. Dietr. 2. 962. (A very obscure species; from Canada. ) 
A. pinnata. Watson, King’s Rep. 5. 126. : 
A. tomentosa. Watson, Proc. Am. Acad. 11.141. Brew. & Wats. 1. c. 265. 
A. verticillata. Hook. in Lond. Journ. Bot. 6. 2338. Walp. Ann. 1. 350. 
A. Wheeleri. Watson, Am. Naturalist, 7. 301; Pl. Wheeler, 9. 
APIASTRUM angustifolium. Nutt.; Torr. & Gray, Fl. 1. 644. Walp. Rep. 
2.428. Torrey, Pac. R. Rep. 4.94; Mex. Bound, 71, t. 28. Boland. Cat. 13. 
Brew. & Wats. Bot. Calif. 1. 259. 
Discopleura capillacea. Hook. & Arn. Bot. Beechey, 142. 
2 Leptocaulis inermis. Hook. & Arn. Bot. Beechey, 347. 
Helosciadium leptophyllum, var. (%) latifolium. Hook. & Arn.1.c. Torr. & Gray, 
Fl. 1. 607. 
A. latifolium. Nutt.; Torr. & Gray, Fl. 1. 644. Walp. 1. c. 
APIUM divaricatum. Benth. & Hook. Gen. Pl 1. 888 (referring the genus 
Leptocaulis to Apium). Wood, Bot. & FI. 140. 
Daucus divaricatus. Walter, 114. Gmelin, Syst. 474. 
Sison pusillum. Michx. Fl. 1. 168. Pursh, 194. Elliott, 1. 356. 
Ammi divaricatum. Persoon, 1. 308. Poir. Suppl. 1. 310. Muhl. Cat. 3o. 
Ligusticum pusillum. Persoon, 1. 315. Spreng. in Roem & Schult. Syst. 6. 555. 
Sium pusillum. Poir. Suppl. 1. 622. 
Ethusa divaricata. Spreng. Prodr. Umbel. 22. Nutt. Genera, 1. 187 & 190. 
Eat. & Wr. 116. 
Sison divaricatus. Spreng. Spec. Umbel. 113; Roem. & Schult. Syst. 6. 411; 
Syst. 1. 887. 
Leptocaulis divaricatus. DC. Mem. Umbel. 39, t. 10, f. A; Prodr. 4.107. Don, 
Mill. 3. 284. Torr. & Gray, Fl. 1. 608. Dietr. 2. 942. Eat. & Wr. 297. Chapman, 
161. Wood, Cl.-Book, 387. A. H. Smith, Proc. Acad. Philad. 1867, 19. Gray, 
Hall’s Pl. Texas, 11. 
Leptocaulis diffusus. Nutt.; DC. Prodr. 4.107. Don, Mill. 3.284. Torr. & 
Gray, Fl. 1. 608. Dietr. 2. 942. Eat. & Wr. 297. Young, FI. Texas, 298. 
Spermolepis divaricata. Raf. in Bull. Bot. Genev. 1880, 214 (Litt.-Ber. zu Lin- 
na, 1833, 82). 
Babiron divaricatum & dichotomum. Raf. New Flora, 4. 24. 
A. echinatum. Benth. & Hook. 1. c. 
Leptocaulis echinatus. Nutt.; DC. Prodr. 4.107. Don, Mill. 3. 284. Torr. & 
Gray, Fl. 1. 609. Dietr. 2. 944. Eat. & Wr. 297. Engelm. & Gray, Pl. Lindh. to. 
Torrey, Marcy’s Rep. 286; Mex. Bound. 70. Gray, Pl. Wright. 2.65; Hall’s Pl. 
Texas, 11. Young, Fl. Texas, 298. 
A. GRAvEOoLENS, Linn. Hook. & Arn. Bot. Beechey, 142. Nutt. Pl. Gambel. in 
Journ. Acad. Philad. 1.183. Torrey, Pac. R. Rep. 4.91. Benth. & Hook. Gen. © 
Pl. 1. 888. Brew. & Wats. Bot. Calif. 1. 258. 
A. leptophyllum. F. Muel.; Benth. Fl. Austral. 3.372. See syn. in DC. Rapp. 
Pl. Rar. Jard. Gen. 3. 7, & Prodr. 4. 105 (under Helosciadium). — Benth. & Hook. 1. c. 
Wood, Bot. & Fl. 140. 
