Umbelliferae 7 5 



usually with one ovule. Micropylc facing outwards. 

 Fruit a berry or drupe. 



Tribe Schefflereae. Petals valvate. Endospenn some- 

 times lobulate. 



Only British genus (leaves simple, endosperm 

 lobulate) : Hedera. 



Fam. 2. Umbelliferae. Herbs with hollow inter- 

 nodes. Leaves alternate with conspicuous sheath, and 

 usually compound lamina. Flowers in simple or com- 

 pound umbels, 5-merous, haplostemonous. Calyx usually 

 inconspicuous. Petals epigynous, tips often inflexed. 

 Staine7is at base of stylopodium. Anthers versatile. 

 G (2), median. Styles 2 arising from epigynous disc 

 (stylopodiiint). Fruit separating into two inericarps pen- 

 dulous on the carpophore, each mericarp with five 

 primary ridges, i.e. two lateral next to the commissure 

 and three dorsal. Four secondary ridges are sometimes 

 present between the primary. Oil canals {yittae) occur 

 in the grooves between \hQ primary ridges: two or more 

 are present on the commissural face of the mericarp. 

 Seed adherent to pericarp. Endosperm copious. Embryo 

 minute. 



Subfamily I. Hydrocotyloideae. Leaves often 

 simple (peltate in the only British sp.). Flowers in heads 

 or simple umbels. Fruit with woody fibrous cndocarp. 

 Carpophore undivided. Vittae absent or in the primary 

 ridges : never in the furrows. 



Tribe I. Hydrocotyleae. /'V?//^ laterally compressed. 

 {Commissure narrow.) 



Only British genus : Hydrocotyle. 



