48 
type. Intermediate forms are numerous, as for instance certain Delaware 
forms, sent by Mr. Cauby, with leaves of the type (the narrow forms) 
and the small fruit of the variety. 
4. T. Fendleri. Stem slender, simple, 1 to 2 feet high, 
from a large fascicle of tubers (an inch long): leaves pinnate, 5 to 
9-foliolate; leaflets ovate or oblong (or lanceolate in upper leaves), 
obtuse, 1 to 2 inches long, incisely serrate: umbel unequally 5 to 
12-ray ed, with neither involucre nor inyolucels; rays to 
inches long; pedicels 2 to 3 lines long: fruit ovate, scarcely 2 lines 
long, with rather more prominent dorsal and intermediate ribs, 
and, narrower lateral wings, than in the other species: oil-tubes 2 
to 4 on the commissural side. (Fig. 27.) — A.rchemora Fendleri 
Gray, PI. Fendl. 56. 
Subalpine swamps and stream banks, Colorado {Hall & Harbour 220, 
Parry loo, Vasey 228, Canby, Brandegee, Coulter, Jones 380, French, 
Trelease, etc.) and New Mexico {Fendler 272). FI. July. 
11. HERACLEUJkl Linn. Gen. n. 345.— Tall stout peren- 
nials, with large ternately compound leaves, deciduous involucres, 
involucels of numerous bractlets, large manv-rayed umbel of white 
flowers, and obcordate petals (the outer ones often dilated and 
2-cleft). 
The genus is very closely allied to Pastinaca, differing chiefly in the 
remarkable petals and thick conical stylopodium. 
1. H. lanatuni Miclix. FI. i. 166. Very stout, 4 to 8 feet 
high, pubescent or woolly above: petioles much dilated; leaflets 
petiolulate, round-cordate, 4 to 10 inches broad, irregularly cut- 
toothed: rays 2 to 6 inches long: fruit 4 to 6 lines long, somewhat 
pubescent. (Fig. 28.) 
Wet ground, throughout Canada and as far south as North Carolina and 
Kentucky, extending westward to New Mexico and the Pacifle coast. 
FI. June. 
The var. vestitum Torr & Gray, FI. 1. 632, is untenable. If it deserved 
varietal rank it would have to be made the type, as it v/as the woolly form 
that was described bv Michaux as H. lanatum. 
H. Spondylium L. has been found on ballast near N. Y. 
City by Mr. Addison Brown. 
12. PASTINACA Linn. Gen. n. 362. — Tall stout biennial, 
with pinnately compound leaves, mostly no involucre, and yellow 
flowers. 
