(29) 



cc. Endosperm not excavated on its ventral 

 surface (Orthospermce). Costce. 5, fili- 

 form, second irij costce 0. Ahenes dors- 

 ally compressed, lenticular. 



1. Heracleum. — Petals obcordate. Oil 

 tubes clavate. Lateral costae of the two 

 akenes toncbiug each other and more 

 distant from the 3 dorsal costce than 

 these amoijgst themselves. 



2. Peucedaniim. — Lateral and dorsal costse 

 equally distant. Oil tubes superficial. 



dd. Primary costce 5, secondary costce 4. 



1. Daucus. — Primary costse fiiliform, brist- 

 ly. Secondary costae spinose. 



ee. Endosperm concave on its ventrcd surface 

 by a longitudinal furrow (Coelospermce). 



1. Caucalis. — Primary costse spinose; sec- 

 ondary more prominent than the prim- 

 ary. 



2. Conium. — ^Akenes laterally compressed. 

 CostaB undulate, crenulate; secondary 

 costae 0. Oil tubes 0. 



3. Dewey a. — Akenes laterally compressed. 



Costse promineut. Secondary costse 0. 

 Oil tubes 2-3 in each vallecula. 



4. Osmorrhiza. — Akenes linear, angulate. 



Carpophore persistent. 



