136 MISSOURI BOTANICAL GARDEN. 
1887; New Market, 1892; Stowell, Hammonton, 1891); New Hampshire 
(Robinson, Jaffrey, 221, 1897); Connecticut (Eaton, New Haven, 1858; 
Eames, Bridgeport, 1893; Pollard, Green’s Farms, 1894); Vermont 
(Stevens, Lake Willoughby, 1895; Kent, E. Wallingford, 1897; Hinsdale, 
St. George, 1892; Ruggles, Hartland) ; Wisconsin (Kellogg, 1888); Ohio 
(Kellerman, Newport, 1897; Jaske, Dayton, 1895; Wilkinson, 1892); 
Ontario (Burgess, London, 1891); Kentucky (Kate Palmer, Louisville, 
1888). 
Also reported from New Brunswick and Nova Scotia (Macoun, Cat. 
Can. Plants 426). 
E. Esvuxia Linn. Sp. Plant. 461. 1753; Gray, Man. 405. 
1848; Brit. & Brown, Ill. Flora 2:380. 1897; 
Boiss. DC. Prod. 15?: 160. 1862. Tithymalus Esula 
Hill, Hort. Kew. 172 (4). 1768; Scop. Fl. Carn. 1: 
338. 1772. [2ded.]. 7. linifolius Lam. Fl. Fr. 
3:95. 1778. (fide Index Kewensis). Huphorbia tristis 
Besser, Index Hort. Crem. Suppl. 4: 27. 1811. (fide 
Boiss. DC. Prod.). Hsula Dalechampii Haw. PI. 
Suc. 155. 1812. ? Huphorbia salicifolia DC. Fl. Fr. 
6: 362. 1815. H. angustifolia Sweet, Hort. Brit. 
357. 1827. (fide Index Kewensis). ? #. race- 
mosa Tsch. in Reichenb. Fl. Germ. Excurs. 761. 
1832. Keraselma Hsula Rafin. Fl. Tell. 4:116. 1836. 
(fide Index Kewensis). Huphorbia discolor Ledeb. 
Fl. Ross. 3:577. 1846-51. H. Fleuroti, L. riparia, 
E. Loreyi, E. ararica Jord. Billot. Annot. Fl. Fran, et 
Allem. 27. 1855. (fide Boiss. in DC. Prod.). Z. inter- 
media Bréb. Fl. Normand. 271. 1859. [8d ed.]. 
Tithymalus discolor Kl. & Gar. Tricoc. 97. 1860. 
T. tristis Kl. & Gar. 1. c. 92. Huphorbion Esulum 
St. Lag. Ann. Soc. Bot. Lyon 7:125. 1880. — 
Reichenb. Ic. Fl. Germ. f. 4791; Brit. & Brown, 
Il. Flora f. 2335; Pammel, Seed-coats pl. 12. f. 
18b. 
Stems about 4 cm. high, striate, many branches below 
the 8 or 9-rayed umbel, the lower sterile; rays about 3 
times dichotomous, leaves crowded below and more or less 
scale-like ; middle stem leaves 4 to 8 mm. wide, 3 to 6 cm. 
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