. of broad membraneous somewhat united veined 
Vou. II.] CARROT FAMILY. ity) 
4. Peucedanum vill6sum Nutt. Hairy 
Parsley. (Fig. 2648.) 
Peucedanum villosum Nutt.; S. Wats. Bot. King’s Exp. 
131. 1871. 
Tomentose-pubescent; peduncles 3/-S’ long, ex- 
ceeding the leaves. Roots long and deep; leaves 
very finely dissected into narrowly oblong obtuse 
lobes and segments, the primary divisions mostly 
ternate; umbel 4-I0-rayed, the rays 4//-10’/ long in 
fruit; bracts of the involucels lanceolate, tomentose, 
or finely pubescent, separate or nearly so; flowers 
yellow; fruit oval, finely pubescent, 3/’-3%4’’ long, 
about 214’’ broad, the lateral wings narrower than the 
carpel, the dorsal and intermediate ribs prominent; 
oil-tubes 3-4 in the intervals. 
Prairies and dry soil, Nebraska to the Northwest Ter- 
ritory, west to New Mexico and California. April-May. 
ir. CYMOPTERUS Raf. Journ. Phys. 89: 100. 1819. 
Perennial subscapose glabrous herbs, from thick roots, with pinnately decompound leaves, 
and white flowers (in our species) in peduncled umbels. Involucre of several bracts or none. 
Involucels of 1 to numerous bracts. Calyx-teeth rather prominent. Petals inflexed at the 
apex. Stylopodium depressed or wanting. Fruit globose, ovoid or ellipsoid, flattened 
laterally or not at all. Carpels dorsally flattened, with 3-5 flat equal wings; oil-tubes 
several or solitary in the intervals. [Greek, wave-winged, referring to the fruit. ] 
About 13 species, natives of western and central North America. 
Involucre none. 1. C. acaulis. 
Involucre prominent. 2. C. monitanus. 
1. Cymopterus acaulis (Pursh) Rydberg. Plains Cymopterus. (Fig. 2649. ) 
Selinum acaule Pursh, Fl. Am. Sept. 732. 1814. 
Cymopterus glomeratus Raf, Journ. Phys. 89: 100. 1819. 
Pais ae: acaulis Rydberg, Bot. Surv. Neb. 3: 38. 
1894. : 
Low, the stem seldom over 1/ high. Leaves erect 
or ascending, bright green, 3/-8’ long, slender- 
petioled, pinnate or bipinnate into linear-oblong 
obtuse entire or lobed segments; umbels slender- 
peduncled, capitate, 1’ or less broad, several rayed; 
rays I//-214’’ long; pedicels very short; involucre 
none; involucel ofa single palmately-lobed bractlet; 
fruit broadly oval, about 3/’ in diameter when 
mature; oil-tubes 4-5 in the intervals; seed face 
nearly flat. 
In dry soil, Minnesota and Wisconsin to Arkansas, 
west to the Northwest Territory, British Columbia and 
Colorado. April-May. 
2. Cymopterus montanus T. &G. Moun- 
tain Cymopterus. (Fig. 2650.) 
Cymopterus montanus T. & G. Fl. N. A. 1: 624. 1840. 
Similar to the preceding species but somewhat 
glaucous, or very slightly pubescent. Leaves 1/-6/ 
high, stout-petioled, pinnate, or bipinnate, the seg- 
ments oblong, obtuse, entire, toothed, or lobed; pe- 
duncles stout, 1/-6’ high; involucre and involucels 
bracts; umbels 1/-2’ broad in fruit; rays several, 
3/’-9’ long; pedicels 1//-2’’ long; fruit ellipsoid, 
3/’-6’’ long, the carpels broadly 3-5 winged; oil- 
tubes 1-3 in the intervals. i 
Dry soil, western Nebraska and Wyoming to Texas. 
March-April. 
