12 Key to the System of 



57. Stamens often inserted away from the base of the 



ovulary; calyx high-adnate to the fruit or rudi- 

 mentary or absent. (Exception : Velleya). Figures 64 to 

 95. Synpetaleae perigynae. 58 



Stamens often inserted at the base of or below the 

 ovulary ; calyx beyond its base free from the fruit. 

 (Exception : Wittsteinia). Figures 96 to 110. 



Synpetaleae hypogynae. 68 



Synpetaleae perigynae. 



58. Nearly always climbers or twiners ... ... 59 



Very seldom climbers or twiners ... 60 



59. Perfect stamens and pistils in separate flowers. 



Plants seldom woody ; tendrils often developed ; leaves 

 scattered, often lobed ; stipules absent ; corolla-base 

 confluent with the calyx; stamens often five, but connate 

 into three; fruit carnulent, generally one-celled, with 

 placentaries affixed to the walls of the fruit-cavity, 

 without complete dissepiments; seeds without albumen t. 

 Figure 77. Cucurbitaceae. 286 



Perfect stamens and pistils mostly in the same flowers. 



Plants not seldom woody; tendrils often developed; leaves 

 scattered, generally lobed; flowers provided with a fringy 

 floral whorl (corona), irrespective of the corolla; stamens 

 generally three to five; fruit free, without any complete 

 dissepiments, and with placentaries affixed to the walls 

 of the fruit-cavity; seeds with albument. 



Passifloreae. 287 



60. Epiphytal parasites. 



Parasites generally on branches of trees, rarely terrestrial, 

 one species a tall tree; leaves usually opposite; calyx 

 adnate, its lobes obliterated or seldom well developed; 

 lobes of the corolla few, contiguous at the margin before 

 expansion; stamens opposite to the corolla-lobes; style 

 one; stigma undivided; ovulary one -celled; ovule gene- 

 rally one, attached to the wall of the ovulary without the 

 intervention of a distinct placentary, sessile ; fruit without 

 any dissepiment, never dehiscent ; seed unprotected by 

 integumental membranes. Figure 66. 



Lorantliaceae. 288 



Terrestrial plants ... ... ... ... ... 61 



