Classification of Plants 



209 



C. Perianth hypogynous. 



Ovary i-celled, placentas parietal, 



ovules many ..... XYRIDACE^E. 

 Ovary 3-2-celled, placentas axile, 



ovules few COMMELINACE^E. 



CC. Perianth epigynous. 



Flowers unisexual, stamens 3 ; floating 



herbs HYDROCHARITACE^E. 



Flowers perfect, stamens i, gynan- 



drous . ORCHIDACE^. 



CLASS II. DICOTYLEDONS. 



SERIES I. Archichlamydeae. 



Perianth either (i) absent; (2) in one whorl, simple, petaloid or sepaloid; 

 (3) in two whorls, the^ inner polypetalous ; (4) in two whorls, the inner 

 sympetalous (rare, where nearest relatives are polypetalou ), or (5) in one 

 whorl by the abortion of the inner whorl (apetalous). Ovules usually 

 with two integuments. \ 



A'. Perianth wanting (ACHLAMYDEOUS). 



B. Carpels apocarpous or syncarpous ; 



flowers perfect or dioecious. 

 Fruit a berry; seed i basal, orthotrop- 

 ous ; jointed shrubs or herbs ; frequently 

 root climbers or epiphytes . . . PIPERACES. 

 BB. Carpels syncarpous, flowers dioecious. 

 Frur. a capsule, seeds many, hairy ; 

 trees . . . ' . . . . SALICACEJE. 

 Fruit a waxy berry, seed i, shrubs . MYRICACE^E. 

 AA. Perianth simple (HOMOCHLAMYDEOUS). 

 B. Calyx bract-like, usually green. 

 C. Perianth hypogynous. 



D. Carpels apocarpous or syncarpous. 



Fruit of many i-seeded carpels . . PHYTOLACCACE^. 

 DD. Carpels syncarpous. 



E. Ovules basal ; erect herbs or 



shrubs, fruit an achene or nut ; 



partial inflorescences at least, 



cymose. 



F. Leaves exstipulate ; ovules cam- 



pylotropous. 

 Ovule i ; calyx herbaceous ; ha- 



lophytic herbs . . . CHENOPODIACK^. 

 Ovule r -many; calyx membran- 

 ous ; not halophytes . . AMARANTACE^E. 



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