ARTIFICIAL KEY TO THE FAMILIES. xlv 



Carpels and styles united throughout ; leaves 

 simple ; or if pinnate, then the whole plant 

 submerged ; stipules 0, or minute and deci- 

 duous : 



Calyx-lobes imbricate ; or if valvate, then 

 trees with flowers in long pendulous racemes 

 and fruit a fibrous berry : 



Stamens many ; anthers opening by slits ; 

 petals imbricate in bud : 



Leaves opposite (in Eucalyptus of 

 2 kinds and often the later to appear 

 alternate), usually gland-dotted 



LXITI. MYRTACEAE. 

 Leaves alternate, not gland-dotted 



LXIV. LECYTHIDACEAE. 

 Stamens 3-12 ; anthers usually opening 

 by pores ; petals contorted in bud ; leaves 

 usually 3-5-ribbed 



LXV. MELASTOMACEAE. 

 Calyx-lobes valvate ; stamens 2-12 ; or if 

 numerous, then leaves not gland-dotted and 

 fruit a capsule : 



Ovary free from the calyx-tube ; or if 

 slightly adnate at the base, then sea-coast 

 trees : 



Flowers axillary or in terminal panicles ; 

 petals usually crinkled ; ovary quite 

 free ; ovary and fruit 1-6-celled 



LXVI. LYTHRACEAE. 

 Flowers solitary, terminal ; petals not 

 crinkled ; ovary slightly adnate at the 

 base to the calyx-tube ; ovary and fruit 

 10-15-celled ; coastal trees 



LXVII. SONNERATIACEAE. 



Ovary completely or half adnate to the 

 calyx-tube ; stamens as many or twice 

 as many as the petals and inserted with 

 them ; herbs and undershrubs, often in 

 marshes, sometimes floating 



LXVIII. ONAGRACEAE. 



Flowers 1 -sexual ; ovary always inferior : 

 Flowers symmetrical ; stamens few, usually 3, 



