UMBELLIFER^ 



531 



ovary; the limb of the tube is absent, or divided into five 

 inconspicuous teeth. The corolla consists of five separate 

 petals, attached to the base of the calyx tube; the tips of the 

 petals are usually turned in, and emarginate or two-lobed. 

 There are five stamens, curved inward in the young flower, 

 with fihform filaments and versatile anthers. The single, 



^kamen 



Fig. 218. — Parsnip (Pastinacasativa). A, median lengthwise section of 

 flower, X 12; B, face view of same, X 12; C, dorsal view of single mericarp, X 

 2H; D, floral diagram; E, schizocarp with mericarps separating at maturity, 

 X 2>^; F, cross-section of single mericarp, X 10. {D after Strasburger.) 



inferior ovary consists of two locules, with a single seed in 

 each, and of two distinct, straight, fiHform styles borne on a 

 swollen nectariferous style foot, the stylopodium (Fig. 218). 

 In some genera (as Apium, celery), the stylopodium is 

 inconspicuous or wanting. The umbellifers are usually 

 insect-pollinated. Protandry is common. 



