DICOTYLEDONES— CALYCIFLORiE 



365 



Synopsis of th& British Natural Orders in the Series CalyciflorcB. 



A. CoroDa polypetalous. Ovary superior. 



1. Ovaries many, distinct or united, each with, a 



style ; or solitary with one lateral placenta. 

 Corolla regular. 



Sepals combined below. 



Stamens equal to ox double the number of 



the petals ; no stipules . . Cr 



Stamens 20 or more, perigynous. Leaves 

 stipulate 

 Corolla irregular. 

 Leaves with stipules. Stamens mono- or dia- 



delphous Leguminosce. 



2. Ovary solitary, with parietal placentation. . 

 Corolla regular. Sepals equal, free, imbricate. 



Stamens 5 ... 



S. Ovary solitary, with central placentas. 

 Calyx valvate in the bud. 



Stamens inserted in the calyx tube below the 

 petals, ... 



B. Corolla polypetaloiis, ovary partly or wholly 



inferior. 



1, Ovary 1-celled. Placentas 2, parietal. Ovules 



numerous . ■ . . 



2. Ovary 2 — many-celled. Placentas central. 

 Stamens as many as the petals, or twice as 



many. 

 Petals imbricate in the bud. 



Petals 5. Stamens 5. Flowers in umbels 



Petals 4 — 5. Ovary only partially inferior. 

 Capsule 2-valved . 



Petals 4. Stamens 4 — 8. Fruit, 4 nuts . 

 Petals valvate in the bud. 



Fruit a berry.' Styles more than 2 ; leaves 

 alternate 



Fruit a drupe. Style 1 ; leaves opposite 



Fruit a cremocarp 

 Petals twisted in the bud. 



Sepals valvate 



C. Corolla gamopetalous. 

 Flowery unisexual 



D. Corolla wanting. 

 Flowers monoecious. 



4 -celled 



Stamens solitai'y. Ovary 



Broseracece. 



Lythracea. 



BibesiacecE. 



UnibellifertB. 



Saxifragaceie 

 Haloragacece. 



Araliaeece, 

 Oornacece. 

 Umbellifercs. 



Onagrace(B. 



Cucarbitaccce. 



Callitrichacets. 



