32 
O 
Aeaulescent and cespitose; Eoeky Mts Albtes, 48 
Oil-tubes more than one in the intervals. 
Stylopodium conical. 
Fruit oblong or ovate, with prominent equal ribs. . . .Ligusticum, 21 
Fruit ovate to linear-oblong, with equal Aliform ribs. . . .EtiLOPHUS, 37 
Fruit round, with globose carpels, and very slender 
inconspicuous ribs BektjiiA, 55 
Stylopodium depressed. 
Seed-face decidedly concave: fiuit with all the ribs 
Aliform. 
Carpels Aattened dorsally Musenitjm, 36 
Carpels terete. 
Seed-face involute, enclosing central cavity. Vel^a, 42 
Seed-face with a deep and narrow sulcus Museniopsis, 43 
Seed-face plane or but slightly concave. 
Fruit with all the ribs conspicuously winged Phelloptebus, 19 
Fruit with prominent equal corky I'ibs. 
Fruit not Aattened either v/ay CcELOPiiEUKUM, 24 
Fruit Aattened laterally SiuM, 45 
Fruit with thick corky lateral ribs and Aliform 
dorsals and intermediates Okogenia, 25 
Fruit with all the ribs Aliform. 
Very small, aeaulescent, high alpine plant Podisteka, 33 
Caulescent, low ground plants Pimpinella, 34 
% % % Pruit strongly Jiattened laterally. 
Marsh or aquatic plants, with simple leaves Hyebocotyle, 58 
Eich ground vernal plants, with ternately compound 
leaves Ebigenia, 59 
SYNOPSIS OF SPECIES. 
1. DAUCUS Linn. Gen. n. 333. — Bristly annuals or bien- 
nials, with pinnately (lecoir,pouncl leaves, foliaceons and cleft in- 
volucral bracts, involncels of entire or tootbed bractlets, and white 
flowers in concave umbels (connivenf in fruit). 
1. D. pusillus Michx. FI. i. 1(34. Stems retrorsely papillate- 
hispid, from an inch to two feet high: leaves finely dissected into 
narrowly linear segments: umbels unequally fev/ to many-rayed ; 
rays ^ to 1;^ inches long; pedicels very unequal, from 8 lines 
long to almost wanting: fruit to 2^^ lines long. (Fig. 1.) 
