76 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
broadish segments, umbel of few unequal rays without involucre and 
with one or two bractlets, and vellow flowers. 
A monotypic genus, known as yet only from Mount Rainier, 
Washington. 
This genus is nearest to Museniopsis, but differs especially in its broad seed face, 
which is never involute or deeply concave. In the seed face it approaches Fulophus 
and Pimpinella, but differs from both in not haying a conical stylopodium, and from 
the former also in its yellow flowers. 
1. Hesperogenia stricklandi C. & R. Contr. Nat. Herb. 5: 203. pl. 27. 
1899. Puate I. 
Root deep seated, somewhat tuberous thickened, crowned with a 
slender rootstock (4); leaves 3 or 4, all basal, without stipular bases, 
ternate or biternate; the segments lanceolate, acute, 12 mm. long, 
glabrous; petioles 3.8 to 5 em. long; scape 7.5 to 10 cm, long, either 
naked or with a small bract-like leaf; rays 3 to 6, some of the sterile 
as well as the fertile ones short (4 mm. long), others 14 mm. long: 
fruit 2 mm. long, either sessile or on pedicels 4 mm. or less long; 
styles long, reflexed. 
Type locality, *‘ Mount Rainier, Washington;” collected by O. 2. 
Allen, no. 278; type in U.S. Nat. Herb. First collected by Mr. Perey 
Stickland, at same station. 
Mount Rainier, Washington. 
Specimens examined: 
Wasutnaton: Mount Rainier, altitude 2,000 meters, Allen 278, August 30, 1897, 
and September 6, 1898; grassy meadows on north side of same mountain, 
altitude 1,540 meters, J. B. Hlett, August, 1897. 
EXPLANATION OF PLATE I.—Fig. 1, plant; 2, fruit; 3, cross section of carpel—figs. 7 and 2 enlarged. 
14. MUSINEON Raf. Jour. Phys. 91: 71. 1820. 
Musenium Nutt. in Torr. & Gray Fl. 1: 642. 1840 (for fullsynonymy of genus 
and species, see Bot. Gaz. 20: 258. 1895). 
Calyx teeth prominent (in ours), Fruit ovate or ovate oblong, flat- 
tened laterally. Carpel flattened dor- 
sally, with equal filiform ribs and thin 
pericarp with no distinct strengthen- 
ing cells. Carpophore entire (in ours) 
or two-parted (Mexican form). Stylo- 
podium depressed. Oil tubes usually 
3 in the intervals, very unequal in size 
(middle one largest), 2 to 4 on the 
commissural side. Seed face broadly 
concave. 
Glabrous or scabrous dwarf resinifer- 
Fig, 13,—Musineon tenuifolium: ous dry-ground perennials, from thick 
Ge X85 DSTO. elongated roots, acaulescent or dichoto- 
mously branching at base, with pinnately decompound leaves, no 
involucre, involucels of a few narrow bractlets and yellow flowers. 
