75 
Var. tenuifolius. Often larger and more branching, with 
narrowly linear leaflets to 1^ inches long. — Thaspimn (?) 
montamtm^ var. (?) teniiifoliuni Gray, PI. Wright, ii. (55. Ligus- 
ticiim jnontamim^ tenziifolmm Watson, Bibl. Index Polypet. 
42(5. 
Same range as the species. 
' Vjy. purpureus. Shortly caulescent, with rather weak 
ascending peduncles (3 to (5 inches long), and purple flowers. 
Sandy soil, Arizona, Mt. Humphreys, July, 1883 {Rusby fi32), and 
Flagstaff (Rusby 631, August, 1883; Jones, August, 1884: Lemmon, Septem- 
ber, 1884; Tracy 235, June 24, 1887). 
2. P. bipinnatus. Cespitose, the short branches of the 
rootstock covered with the crowded remains of dead leaves, glau- 
cous, puberulent or glabrous: leaves pinnate with few pairs of 
short segments, which are pinnately divided into short linear lobes: 
scapes 4 to 8 inches high, much exceeding the leaves; rays 1 to 4 
lines long; involucels of few linear-lanceolate bractlets; flowers 
white: fruit nearly sessile, ovoid, 1^ to 3 lines long, moder- 
ately flattened dorsally, the 5 thickish carpel wings equal and nar- 
row (often being but very jjrominent acute ribs), with obscure 
strengthening cells: oil-tubes 3 or 4 in the intervals, 6 to 8 on the 
commissural side: seed-face concave. (Fig. 74 .) — Cymopterzis 
bipinnatus Watson, Proc. Am. Acad. xx. 368. 
Montana, in the mountains south of Virginia City (Hayden, in 1871, 
under Cymopterus foeniculaceus), near Bannock City (Watson, in 1880), 
Mt. Helena (Canby, in 1883), Shields River (Scribner 66 c, in 1883), along 
N. P. E. R. (Tweedy 291, in 1882); Dakota, Black Hills (Rusby, in 1887). 
3. P. anisatus. Acaulescent, cespitose from a much 
branched caudex which is more or less covered with the remains 
of old leaves: leaves on long petioles, narrow, somewhat rigid, 
pinnate and the leaflets pinnately-parted into linear (sometimes 
linear-oblong) pungently acute segments: peduncles 6 to 12 inches 
high, exceeding the leaves ; umbel unequally 5 to 12-rayed, with 
involucels of linear-subulate (sometimes lobed) bractlets exceed- 
ing the white or yellow flowers; rays to 3 inches long; pedicels 
1 to 3 lines long: fruit about 2 lines long, the carpel irregularly 
2 to 5-winged, with prominent group of strengthening cells in 
each one: oil-tubes 1 to 3 in the intervals, 2 to 4 on the commis- 
sural side: seed-face plane. (Figs. IQ.)— Cymopterus terebin-^ 
