INDEX. 
(The references are to the subpagination of the article. Synonyms are in parentheses.) 
Adenopetalum, 3. 
Anisophyllum, 3. 
Decussatae, 9. 
Epurga Lathyris, (9). 
— pensylvanica, (9). 
Esula cupressina, (50). 
—— Cyparissias, (50). 
—— Dalechampil, (52). 
— exigna, (28). 
— minima, (29). 
—— pensylvanica, (50). 
— Peplus, (29). 
— rotundifolia, (29). 
Esulae, 2, 4, 26. 
Euphorbia alta, 24. 
—— androsaemifolia, (53). 
— angustifolia, (52). 
—- ararica, (52). 
— Arkansana, 18, 20, 25. 
— — atrosemina, 21. 
— — Coloradensis, 20, 21. 
— — Missouriensis, 19, 21. 
—— brachycera, 44, 45, 48. 
—— campestris, (45), 46, 47. 
— — esulaeformis, (45). 
—— capparis, (50). 
—— chamaesula, (45), 45. 
— — subdentata, 47. 
— Coderiana, (15). 
— commutata, (29), 34, 37. 
—— — erecta, 35. 
—- crenulata, 31, 35, 36. 
—— — Franciscana, 38. 
—— Cyparissias, 50, 54. 
— Darlingtonii, 13. 
—— — glabra, (13). 
— decussata, (9). 
—— dictyosperma, (17, 18, 19, 20, 24), 21, 
22. 
—— —— leiococca, (24). 
—— — Mexicana, (22). 
— — multicaulis, (22). 
—— discolor, (13, 52). 
—— dumosa, (27). 
— KEeula, (50), 52. 
Euphorbia esulaeformis, (45, 47, 48). 
— — subdentata, (47). 
— exigua, 28. 
— Fendleri, (43). 
—— Fleuroti, (52). 
— Floridana, 11. 
— foetida, (15). 
— gracilis, 2. 
— Helioscopia, (16, 18), 25. 
—- Helleri, 28. 
—— hiberna, 14. 
— incisa, (42). 
—— intermedia, (52). 
—— inundata, 12, 13. 
—— Ipecacuanha, 2. 
— lanuginosa, (15). 
— Lathyris, 9. 
— leiococca, 19, 24, 
—— leptocera, (36). 
— —crenulata, (36). 
— Lindheimeriana, (33). 
—— literata, (16). 
— longicruris, 33. 
— Loreyi, (52). 
— lucida, 53, 
—— lurida, 39. 
— — Pringlei, 39. 
— Mexicana, 21, 25. 
— mollis, (43). 
—— montana, (39, 44, 48), 43, 44, 45, 49. 
— —-gracilior, (43). 
— — robusta, (48). 
— — trifaris, 44. 
—— multicaulis, (21). 
—— nemoralis, (13). 
— Nicaeensis, (53), 54. 
— obtusata (15, 18, 19), 16, 19, 21, 25. 
—— odontadenia, 44. 
— Ohiotica, (34, 35). 
— oleaefollia, (53). 
—— pallida, (53). 
—— Palmert, 40, 41. 
— — peplofolia, 41, 50. 
— paniculata, (15). 
— Paralias, 55. 
—— peplidion, 31, (32). 
— peplofolia, (41). 
59 
