134 MISSOURI BOTANICAL GARDEN. 
cm. long; leaves large, usually thinner, broader; glands 
serrate. — West of the Rocky Mountains in Colorado, Utah, 
and Arizona. — Some specimens approach #. schizoloba 
and HL’. Palmeri peplofolia. — Plate 49. 
Specimens examined (Watson, Wahsatch Mts., Utah, 1081, 1869; 
Eastwood, Mancos, Col., 1891; Johnson, South Utah, 1876; Brandegee, 
Cafion City, Col., 396; Jones, Cedar City, Utah, 5206, 1894; Palmer, Ari- 
zona, 1869. The last three are doubtfully placed here. 
* + Perennial by a horizontal rootstock or by buds from long, hori- 
zontal roots; umbel many-rayed; seeds smooth; introduced from 
Europe. 
E. Cyparissras Linn. Sp. Plant. 461. 1753; Boiss. DC. 
Prod. 15?: 160. 1862; Gray, Man. 388. 1857. [2d ed.]; 
Macoun, Cat. 426. 1886; Brit. & Brown, Ill. Flora 
2:381. 1897. Tithymalus Cyparissas Hill, Hort. 
Kew. 172 (4). 1768; 7. Cyparissias Lam. Fl. Fr. 
3:96. 1778. (fide Index Kewensis). 7’. angustifolius 
Gilib. Fl. Lituan. 2: 209. 1792. (fide Index Kew- 
ensis). Huphorbia Hsula Tenore, Fl. Nap. 1: 273. 
(fide Index Kewensis). Hsula Cyparissias Haw. PI. 
Succ. 155. 1812. Hsula cupressina 8. F. Gray, Nat. 
Arr. Brit. Pl. 2: 259. 1821. eraselma Cyparissias 
Rafin. Fl. Tell. 4: 116. 1836. (fide Index Kewensis). 
Tithymalus acicularis Dulac, Fl. Hautes-Pyr. 156. 
1867. (fide Index Kewensis). Huphorbion cyparissium 
St. Lager, Ann. Soc. Bot. Lyon 7:126. 1880. £Z. 
capparis Hyams, Journ. Elisha Mitchell Soc. 1884-5 : 
75. 1885. Hsula pensylvanica Gandoger, Fl. Eur. 
20:107. 1890.— Reichenb. Ic. Fl. Germ. f. 4793; 
Brit. & Brown, Ill. Flora 7. 2337; Pammel, Seed- 
coats pl. 12. f. 18c. 
Long horizontal roots covered with adventitious buds; 
stems several to many, 8 to 13 em. high, bright green, 
glaucous, somewhat striate; umbel about 15-rayed ; rays 1 
to 2 em. long, slender, 2 to 3 times dichotomous; branches 
below the umbel mostly sterile, after fruiting time much 
50 
