Urticacecr. 



79 



I. HOLOPTELEA. 



2. Celtis. 



ovule in each cell, style simple or 2-fid, elongate, or stigma 

 sessile, plumose or penicillate ; fr. a simple indehiscent samara 

 or drupe, or a small achene, or a fleshy syncarpium of con- 

 fluent pericarps and perianths with immersed achenes ; seed 

 erect or pendulous, endosperm copious, scanty, or o. 



Ovule pendulous from near the top of the ov., 

 anatropous. 

 Stams. erect in bud, or nearly so. 



Fr. a winged samara ; a tree {UlmecE) 

 Fr. a drupe; trees or shrubs {Celtidece). 

 Stip. free. 



Male sep. imbricate 



Male sep. valvate 3. Trema. 



Stip. connate, convolute . . . .4. GiRONNlERA. 

 Fr. of crustaceous achenes enclosed in a fleshy 

 receptacle or confluent with the sep. in 

 a fleshy syncarpium ; trees or shrubs 

 {ArtocarpecE). 

 Male and fem. fl. in closed receptacles 

 Male fls. in open disk-like receptacles 

 Male fls. in globose or cylindric heads or 

 spikes. 

 Male fl. tetrandrous .... 



Male fl. monandrous .... 

 Stams. inflexed in bud ; trees or shrubs. 



Style deeply bifid, or styles 2 (except Dorstenia). 

 Male fl. capitate, spicate, or racemed. 

 Male fl. racemed ; bracts minute . 

 Male fl. subcapitate. 



Bracts and fem. seps. large, accrescent 10. 

 Bracts small; fem. seps. small . .11. 

 Male and fem. fl. crowded on a flat receptacle 12. 

 Style undivided (or with a short arm in 13). 

 Male fl. spicate, fem. distinct 

 Male fl. capitate, fem. confluent . 

 Ovule erect from or near the base of the ov., 

 orthotropous. Stams. inflexed in bud. 

 Herbs or shrubs with stinging hairs iUrerece). 



An annual herb 



Perennial herbs or shrubs. 

 Fem. perianth 3-4-partite 

 Fem. perianth 2-3-toothed 

 Herbs, shrubs, or trees with no stinging hairs. 

 Male and fem. perianth 3-5 -partite {Pi-o- 

 crideae). 

 L. opposite. 

 Fl. in cymes or heads ... 

 Fl. on a disciform recept. 

 L. alternate. 



Male and fem. fl. in cymes . 

 Male and fem. fl. on a fleshy recept. . 

 Male fl. in cymes, fem. on a disciform 

 recept 22. Procris. 



5. Ficus. 



6. Antiaris. 



cudrania. 

 Artocarpus. 



9. Taxotrophis. 



Phyllochlamys* 



Streblus. 



Dorstenia. 



13. Allaeanthus. 



14. Plecospermum, 



15. Fleurya. 



16. 

 17. 



Laportea. 



GiRARDINlA. 



18. 

 19. 



20. 



21. 



Pilea. 

 Lecanthus. 



Pellionia. 



Elatostemma» 



