Euphorhia^ 



80. EUPHORBIAOEiK. 



295 



Order 80. EUPHORBIACE^. 



Trees or shrubs with milky juice. Leaves alternate or opposite 

 usually simple. Flowers unisexual. Perianth simple and cal joined 

 rarely double. Stamens various, anthers 2-celled, often didymous. 

 Ovary superior, 3-2 carpellary ; styles as many as carpels, free or 

 united, ovules 1-2, in each cell ; pendulous from inner angle of the 

 cell ; funicle often thickened. Fruit a capsule or drupe. Seed 

 with or without an arillus. Albumen fleshy, rarely 0, embryo 

 straight with flat cotyledons and a superior radicle, rarely exal- 

 buminous with fleshy cotyledons. 



Cells of ovary 2-ovuled [except Muphorlia), 

 Flowers enclosed in an involucre or not 

 (Euphorbise), 

 Flowers enclosed in an involucre, involucre 



calyx-like 1. Efphobbta. 



Flowers not inclosed in an involucre (Pliyllantheae). 

 Petals minute or 0. 



Petals present. Cal^x-lubes valvate. 

 Filaments united. 



Ovary 2-cened. Fruit a drupe 

 Ovary 3 -celled. Fruit a capsule 

 Filaments free. Calyx-lobes imbiicate . 



Petals 0. 



Stamens 3-6. Styles or tlieir arms 

 slender (except Glochidion), 

 Perianth of male flowers 6-lobed, 

 lobes spreading. 

 Flowers monoicous. 



Disk present in both 



2. Betdelta, 



3. Cleistanthfs. 



4. ACTEPHILA* 



Disk absent. Styles 

 confluent 

 Perianth of male flowers turbi- 

 nate, lobes minute 



Perianth of male flowers rotate, 

 6-lobecl, lobes spurred 



Flowers dioecious, sepals 6 ... 

 Stamens few or many. Styles or 

 stigmas 2-3, dilated. 



Leaves entire or serrulate. Fruit 

 a drupe. 



Stamens 2-3. Ovary 2-3- 



celled 



Stamens 8 or many. Ovary 



3 -celled 



Stamens many. Ovary 2-4- 



celled 



Leaves trifoliate. Stamens 5 ... 

 Stamens 2-8. Styles or stigmas very 

 minute. 



Male flowers in catkins. Fruit 



dehiscent 

 Male flowers in spikes or racemose. 

 Fruit small, compressed, 



rugose, not arillate 

 Fruit large, coriaceous. 

 Seeds arillate 



5. Phylianthfs. 



6. Glochidion. 



7. Beeynia. 



8. Safeopfs. 



9. fxfeg-gia. 



10. Puteanjiva, 



11. HEifiCYCLIA. 



12. Cyclostemon. 



13. Bischofia. 



14. Apoeosa. 



15. Antidesma. 

 IC. Baccafeea. 



