* Oil-tubes solitary in all the intervals : western species, 
1. A. pinnata Watson, King’s Rep. v. 126. Glabrous: 
stem 2 to 3 feet high: leaves simply pinnate, with 2 to 4 pairs of 
A 
ovate to narrowly lanceolate sharply serrate to entire leaflets (low- 
est pair sometimes pinnate): umbels 10 to 20- rayed, with neither 
involucre nor involucels; rays 2 to 4 inches long; pedicels 2 lines 
long; flowers greenish-yellow or dull purple: stylopodium slightly 
conical: fruit oblong, glabrous (at maturity), 2 to 3 lines long; 
dorsal and intermediate ribs thick and prominent; laterals with 
wings hardly as broad as body: oil-tubes 4 on the commissural side: 
seed-face somewh.at concave. (Fig. 7.) 
In the Wahsatch and Uinta Mountains, 7-10,000 feet altitude, and Yel- 
low stone Park {Tweedy 3). FI. July and August. 
A doubtful Angelica, its pinnate leaves, thick dorsal ribs, and greenish- 
yellow or dull-purple floweis, all contradicting the usual characters of 
the genus. 
2. A. genuflexa Nutt. Torr & Gray, FI. i. 620. Glabrous, 
except the more or less rough pubescent inflorescence, 2 to 4. feet 
high : leaves once to tv/ice ternate, the divisions often deflexed; 
leaflets ovate to lanceolate, more or less acuminate, irregularly and 
sharply serrate: umbel equally many-rayed, with no involucre, and 
involucels of numerous linear bractlets; rays an inch or more long; 
fruiting pedicels 4 to 6 lines long: fruit nearly round, emarginate 
at base and apex, glabrous; lateral wings broader than body: oil- 
tubes 2 on the commissural side: seed-face plane (Fig. 8.) — 
Archangelica peregrina Nutt. 
In wet places, Oregon, Washington Territory, and Vancouver Island 
{Macoun). FI. July and August. 
Upon consulting Nuttall’s type specimens of, this species, and of his 
Archangelica peregrina, the latter being in especially good condition in 
the Torrey Herbai ium, it becomes very evident thatt hey are the same and 
that A. peregrina is not a synonym of Ccelopleurum OJmelini, as has been 
supposed. They are both from his “Wappatoo Island” station. This is 
also Tweedy 280 from the Cascade Mts., Wash. Terr., distributed as a prob- 
able form of A. tomentosa, and mixed with fruit of A. arguta. 
3. A. Lyallii Watson Proc. Am. Acad. xvii. 374. Gla- 
brous throughout, stout, 4 or ’5 feet high: leaves once or twice 
ternate then quinate, the uppermost reduced to large inflated 
petioles ; leaflets ovate to lanceolate, acute or acutish, unequally 
dentate: umbel (sometimes puberulent) unequally many-rayed, 
