426 THE STORY OF PLANT LIFE 



B. Petaloide^. — Flowers haplochlamydeous ; perianth 

 often petaloid. Diplochlamydeous flowers rare 

 {Rumex). 

 Order 6. Santalales. — Flowers cyclic, homo- 

 chlamydeous, with stamens anteposed to perianth- 

 leaves, rarely heterochlamydeous, haplo- or diploste- 

 monous; gyncecium superior (2-3, rarely i), each carpel 

 with one ovule, pendulous from apex of loculi or from 

 free-central placenta; sometimes — in Loranthacese — 

 the ovules and placenta are not differentiated, but the 

 embryo-sacs are in the tissue fiUing the interior of 

 the ovary. 



Sub-Order i. SANTALiNEiE. — Ovules differentiated from 

 placenta, often without integument. 



Family. Santalaceae (Vol. Ill, p. 229). — Flowers 

 bisexual; perianth 5-partite, persistent, bracteoid or petaloid; 

 stamens 5; ovary i-locular; ovules 1-3, on free central 

 placenta. 



Tribe. Thesiece. 



Genus. Thesium (Vol. Ill, p. 231). 

 Sub-Order 2. Loranthine^e. — Ovules mostly not 

 differentiated. 



Family. Loranthacese (Vol. Ill, p. 223). — Flowers 

 unisexual, small, green ; perianth 4-partite ; stamens fused 

 to perianth-lobes ; ovary i-locular ; fruit a pseudo-berry. 

 Sub-Family. Viscoideae. 

 Tribe. Viscece. 



Genus. Viscum (Vol. Ill, p. 225). 



Order 7. Aristolochiales. — Flowers cyclic, 

 homochlamydeous, epigynous, regular, or zygo- 

 morphic ; perianth petaloid ; ovary usually inferior. 



