74 MEDICAL BOTANY. 



Group XXXII. — Bignoniales. 



Ovary free, 1-2 (or spuriously 4) celled, with numerous ovules. Corolla 

 irregular, the stamens inserted on the tube, usually fewer than its lobes. 

 Fruit capsular or berried. Embryo with little or no albumen. 



Order 79. — Pedaliacile. — Placentae parietal. Fruit bony or capsular. 

 Embryo amygdaloid. Radicle short. 



Order 80. — Bignoniace^e. — Placentae axile. Seeds winged, sessile, ex- 

 albuminous. Cotyledons large and leafy. 



Order 81. — Scrophulariace^e. — Placentae axile. Seeds albuminous. 

 Cotyledons scarcely larger than, or not as large as the radicle. 



Group XXXIII. — Cortusales. 



Ovary free, (or with the base merely coherent,) 1 -celled, with a free, cen- 

 tral placenta. Stamens as many as the lobes of the corolla. Embryo in a 

 large deposit of albumen. 



Order 82. — Plumbaginace^e. — Stamens opposite the petals. Fruit mem- 

 branous ; 1 -seeded. Styles 5. Stem herbaceous. 



Sub-Class III.— Apetalous Exogenous Plants* 



Corolla none ; the floral envelopes consisting of a single series, (calyx,) or 

 sometimes wholly wanting. 



Group XXXIV. — Asarales. 



Flowers perfect, with a conspicuous or coloured calyx. Ovary several- 

 celled, many-ovuled. Fruit a capsule or berry. Embryo small, in a large 

 quantity of albumen. 



Order 83. — Aristolochiace^e. — Ovules indefinite. 



Order 84. — Santalace^e. — Ovules definite, with a coated nucleus. 



Group XXXV. — Chenopodales. 



Flowers perfect, or rarely polygamous, with a regular and often petaloid 

 calyx. Ovary 1 or several-ceiled, with a solitary ovule in each. Embryo 

 curved, round, or applied to the surface of a mealy or horny albumen. 



Order 85. — Phytolaccace^e. — Sepals separate, flat. Stamens alternate 

 with the sepals, or indefinite. Carpels several. 



Order 86. — Chenopodiacej:. — Sepals separate, or nearly so, flat. Sta- 

 mens opposite the sepals. Anthers 2-celled. Ovary 1. One-seeded. 

 Flowers naked. 



Order 87. — Polygonace^e. — Calyx coloured. Ovules orthotropal. Nut 

 usually triangular. 



Group XXXVI. — Daphnales. 



Flowers perfect, sometimes polygamous or dioecious, not disposed in 

 aments, with a regular and more or less petaloid calyx. Ovary 1 -celled, or 

 rarely 2-cellcd, with one or few ovules in each. Fruit 1-celled and 1-seeded. 

 Embryo not coiled round albumen. 



Order 88. — Laurace^e. — Anthers bursting by recurved valves. Leaves 

 perfect. Fruit naked. 



