16 
Fifth class. 
110. Fr.-ribs all with membranous wings. Pets deeply in¬ 
dented, with an inflexed point. Leaf-segments narrow- 
lanceolate or linear .... Selinum. 242. 
— The 3 dorsal ribs not winged. Pets not indented, acu¬ 
minate. Leaf-segments large, broad, oval or oblong. 
(L.- sheaths inflated) ...... Ill 
111. Cal.-teeth obliterated. FIs white or rose Angelica. 244. 
— Cal.-teeth fairly distinct. FIs greenish Archangeiica. 245. 
112 (109). Vittfe not reaching the lower ends of the furrow, 
clavate.Heracleum. 249. 
— Vittfe filiform, extending the whole length of the furrow 
Peucedanum. 246. 
113 (96). Mericarps with 4 winged secondary ribs, the fr. 
consequently 8-winged . . Laserpitium. 251. 
— Fr. without secondary ribs . . . 114: 
114. Albumen deeply channelled on the inner face 115 
— Albumen flat or raised on the inner face . 117 
115. Cal.-teeth obliterated. Furrows without vittee. Ribs 
crenate .Conium. 262. 
— Cal.-teeth distinct. Furrows with 1—2 vittfe. (Stem 
10—15 dm) . 116 
116. Ribs crenate .... Pleurospermum. 263. 
— Ribs not crenate . . . Molopospermum. 261. 
117 (114). Farrows without vittfe. Alpine pis Pachypleurum. 241. 
— Furrows with 1—several vittee .... 118 
118. Fr. compressed dorsally, surrounded by a broad wing 
Peucedanum. 246. 
— Fr. (in transverse section) orbicular or laterally com¬ 
pressed . Ilf) 
119. Pets entire, not indented, with a straight or inflexed 
tip. Marsh pis .... Helosciadium. 220. 
— Pets indented, with an inflexed lobule . . 120 
120. Furrows with 1 vitta ..... 121 
— Furrows with 3—several vittfe . . . 122 
121. Cal.-limb with 5 distinct teeth. Ls ternatisect 
Falcaria. 222. 
— Cal.-limb obliterated. Invol.-leaflets 3—sevejal-fid 
Ammi. 224. 
— Cal.-limb obliterated. Invol.-leaflets entire Carum. 226. 
122. Fr. ovoid-oblong; ribs acute, prominent, with narrow 
wings. Ls several times pinnatisect, with linear seg¬ 
ments. Jura.Ligusticum. 238. 
— Fr. ovoid, almost didymous; ribs filiform. Ls gen. simply 
pinnatisect, segments lanceolate or oblong. Water pis 
1229. 
122a. Vittee very numerous, hidden under the thick pericarp. 
Umbels opp. the ls . . . . Berula. 228. 
— Yittrn on the surface. Umbels distinctly terminal Sium.229. 
