Vm KEY TO NATURAL ORDERS. 



65. Bignaniacece. — Trees, rai'ely erect ov climbing shrubs. Leaves 

 opposite, often compound, exstipulate. Floweis irregular. Stamens 4, 

 in pairs or 2 only. Ovary 2-celled ; ovules many. Fruit a capsule ; 

 seeds winged. 



Q>Q. Acanthacece. — Herbs or shrubs. Leaves opposite, simple. Sti- 

 pules 0. Flowers irregular. Fruit a capsule. Seeds usually supported 

 on hooks of the placenta. Seeds often elastically hairy when wetted. 



G7. Verbenacece. — Trees, shrubs or herbs. Leaves opposite. Flowers 

 irregular. Calyx gamosepalous, often enlarged in fruit. Ovary 4-celled. 

 Cells 1-ovuled. 



68. LahiatcB. — Herbs or shrubs. Leaves opposite. Flowers irregu- 

 lar. Stamens fewer than corolla-lobes ; 2 or 4 in pairs. Ovary deeply 

 lobed. Style gynobasic. Albumen or scanty. 



SaB-CLASS IIL MONOCHLAMYDEiE. 



Perianth simple or (double iu some Euphorhiacece). 



69. Nyctaginaceoe. — Herbs, shrubs or trees. Leaves usually opposite- 

 Stipules 0. Flowers I'egular, hei^maphrodite. Base of perianth persist- 

 ent and enclosing the ovary and fruit. Seeds albuminoxis. Embryo 

 curved. 



70. Polygonacece. — Herbs or shrubs. Leaves simple, alternate with 

 sheathing stipules. Flowers small, hermaphrodite or unisexual. Ovary 

 superior. Ovule 1 erect. Seeds albuminous. Embryo straight or 

 slightly curved. 



71. Myristicaceoe. — Trees or shrubs. Leaves alternate, entire. Flow, 

 ers small, dicEcious. Stamens united in a column. Albumen ruminate. 

 Fruit fleshy, 2«valved. Seed arillate. 



72. Laurinece. — Trees or shrubs. (CassytJia a parasite). Leaves 

 simple, alternate or opposife. Flowers hermaphrodite or unisexual. 

 Anther-cells opening by recurved valves. Ovary 1-celled. Ovule 1, 

 pendulous. Albumen 0. 



73. Thymelaceoe. — Trees or shrubs with tenacious bark. Leaves 

 alternate or opposite. Flowers hermaphrodite. Stamens definite. Ovary 

 free, 1-celled, 1-ovuled. Ovule pendulous. Albumen fleshy or 0. 



74. Elceagnncece. — Trees or shrubs, often scandent and covered more 

 or less with silvery scales. Leaves alternate or opposite entire. Flowers 

 hermaphrodite. Base of perianth-tube persistent round the free 1- 

 celled ovary. Ovule 1, erect. 



75. Loranthacece. — Parasitic evergreen shrubs. Leaves coriaceous, 

 entire, usually opposite ; sometimes wanting. Flowers hermaphrodite 

 Ovary inferior, Ovule solitary, erect. Albumen green, fleshy. 



76. Santalacece. — Trees, shrubs or herbs. Leaves entire, alternate 

 or opposite. No stipules. Stamens opposite perianth-lobes. Ovary 

 inferior, 1 -celled. Fruit 1-sccded. Albumen fleshy. 



