Coulter and Rose give the range of this species only westward to the Rocky Mountains. In Canada it ranges quite across the continent, and is found, though rarely, on Vancouver Island. (Macoun.)
Var. Canadensis, Torr. Fl. U.S., 302.
S. Canadensis, Linn.; Macoun, Cat, I., 179.
There is now no doubt that this is only a variety of S. Marylandica, and references under that species in Part I. belong here.
(3118.) S. Howellli, C. & R. Bot. Gazette, XIII., 81.
"Stems coarse, a foot or less high, more or loss buried in the sand (or earth), often bearing tufts of stout elongated peduncles and leaves; leaves broad and palmately three to five lobed (often much modified by by being buried in the sand), the upper inclined to be pinnately lobed, the divisions rather sharply cut and toothed, the teeth mucronate-tipped; umbels unequally few-rayed, with involucre of few leaf-like bracts, and involucels of very prominent bractlets, sometimes much exceeding the large globose head of fruit; flowers yellow; fruit short pedicellate, prickly all over, 1 1/2 to 2 lines long, seed face concave." On clay cliffs Beacon Hill, Victoria, Vancouver Island. 1887. (Macoun.)
(3119.) S. Nevadensis, Watson, Proceed. Amer. Acad. XL, 139.
"Stem slender, sometimes very short, simple, or branching near the base, a foot or less high; leaves ternate, the divisions oblong-ovate, 3 to 5-lobed; the segments lobed or toothed; umbel with about 5 rays, which are sometimes branched and become 1/2 to 1 1/2 inches long in fruit, involucre of pinnatifid leaf-like bracts, and involucels of small oblong acute bractlets; flowers yellow, the sterile ones pedicelled, fruit prickly all over, 1 1/2 lines long; seed face plane." On dry rocky hills near Victoria and Nanaimo, Vancouver Island, 1887. (Macoun.) Thickets, Cadboro Bay, Vancouver Island, 1885. (Fletcher.)