Cicuta douglasii (DC.) Coult. & Rose

Cicuta douglasii (DC.) Coult. & Rose, Contr. U. S. Nat Herb. 7:95. 1900.
? Sium ? Douglasii DC. Prodr. 4: 125. 1830.
Cicuta maculata ? sensu H. & A. Bot. Beech. Voy. 142. 1832. Not C. maculata L. 1753.
? Cicuta occidentalis Dougl.; Heynh. Nom. 2: 144. 1840. (Nomen nudum.)
Cicuta californica A. Gray, Proc. Am. Acad. 7: 344. 1868.
Cicuta virosa var. californica Coult. & Rose, Rev. N. Am. Umbell. 130. 1888.
Cicuta occidentalis Greene, Pittonia 2: 7. 1889.
Cicuta occidentalis i. frondosa Greene, Pittonia 2: 7. 1889.
Cicuta purpurata Greene, Pittonia 2: 8. 1889.
Cicuta vagans Greene. Pittonia 2: 9. 1889.
Cicuta grandifolia Greene, Leaflets 2: 24. 1909.
Cicuta Douglasii var. occidentalis M. E. Jones, Bull. Univ. Mont. Biol. 15: 42. 1910.
Cicuta frondosa Greene, Leaflets 2: 236. 1912.
Cicuta subfalcata Greene, Leaflets 2: 237. 1912.
Cicuta valida Greene, Leaflets 2: 238. 1912.
Cicuta Sonnei Greene, Leaflets 2: 239. 1912.
Cicuta fimbriata Greene, Leaflets 2: 240. 1912.
Cicuta cinicola A. Nelson. Bot. Gaz. 54: 141. 1912.
Cicuta occidentalis f. californica H. Wolff in Engler, Pflanzenreich 90 (4 !2 ») : 82. 1927.
Cicuta occidentalis f. oregonensi-idahoensis H. Wolff in Engler. Pflanzenreich 90 (4 22! ) : 82. 1927.
Cicuta occidentalis f. arizonensis H. Wolff in Engler, Pflanzenreich 90 (4 226 ) : 82. 1927.
Cicuta occidentalis f. ivyomingensis H. Wolff in Engler, Pflanzenreich 90 (4 228 ) : 82. 1927.
Stout, from a vertical or horizontal, short or elongate, tuberous base bearing fibrous or fleshy-fibrous roots, 6-20 dm. high; leaves oblong to ovate in general outline, excluding the petioles 12-38 cm. long, 7-22 cm. broad, 1-3-pinnate, the leaflets linear-lanceolate to ovatelanceolate, 3-10 cm. long, 6-35 mm. broad, remotely to coarsely serrate or incised; petioles 1-8 cm. long; peduncles 5-15 cm. long; involucre of 1-several narrow bracts, or wanting; involucel of several ovate-lanceolate to linear, acute or acuminate, scarious-margined bractlets, 2-15 mm. long, shorter or longer than the flowers; rays 2-6 cm. long; pedicels 3-8 mm. long; fruit ovoid to orbicular, 2-4 mm. long, 2-3 mm. broad, constricted at the commissure, the ribs low, broad, and corky, subequal in surface display, broader than the reddish-brown or homochromous intervals, the lateral ribs of the two carpels separated by an interval; oil-tubes small; seed not very oily, not sulcate under the tubes, the face plane.
Type locality: "In America boreali occid.," Douglas.
Distribution: Alberta and Montana to western Alaska, south to California. New Mexico, Arizona, and Chihuahua (Baker 655, Nelson &• Macbride 1315).

Cicuta mexicana Coult. & Rose, Proc. Wash Acad. 1: 145. 8 Ja 1900.
Cicuta maculata sensu Hemsl. Bio!. Centr. Am. Bot. 1: 566. 1880. Not C. maculala L. 1753. Cicuta Curlissii Coult. & Rose, Contr. U. S. Nat. Herb. 7: 97. 31 D 1900. Cicuta maculata var. Curtissii Fernald, Rhodora 41: 439. 1939.
Stout, from a usually erect tuberous base bearing fleshy-tuberous roots, 9-24 dm. high; leaves ovate-deltoid in general outline, excluding the petioles 15-35 cm. long, ternate-pinnate or 2-pinnate, the leaflets oblong-lanceolate, 4-10 cm. long, 1.5-4 cm. broad, finely to coarsely serrate, thick and strongly reticulate; petioles 2-3 dm. long; peduncles 5-9 cm. long; involucre of 1-several narrow bracts, or wanting, involucel of several lanceolate to linear, acute, scariousmargined bractlets 2-5 mm. long, shorter than or equaling the flowers; rays very unequal, 2-8 cm. long; pedicels 3-15 mm. long; fruit orbicular or nearly so, 2-3 mm. long, constricted at the commissure, the ribs low, broad and corky, subequal in surface display, broader than the intervals, the lateral ribs of the two carpels separated by an interval; oil-tubes large; seed very oily, deeply sulcate under the tubes, the face plane or concave.
Type locality: Coatzacoalcos, Isthmus of Tehuantepee, Vera Cruz, Chas. L. Smith 1161. Distribution: New Jersey to Florida, south and west to Tamaulipas, Nuevo Le6n, anil Vera