GAMOPETALAE. 135 
(4) Ovary completely several-celled. Ovules 
attached to axile placentas. 89. 
85 (a) Ovules attached to a free central placenta. 
Herbs. Leaves radical or reduced to 
alternate scales. Corolla spurred. 
Stamens 2. Seeds exalbuminous. 
Lentibularieae. 
(6) Ovules attached to parietal placentas. 86. 
86 (az) Plants destitute of green colour. Leaves 
reduced to scales. Embryo much 
shorter than the albumen. Parasitical 
herbs. Flowers spicate or racemose, 
rarely solitary. Stamens 4. Seeds 
minute. Orobanchaceae. 
(0) Plants of a green colour. Leaves per- 
fectly developed. Embryo as long as 
the albumen, or more frequently with- 
out albumen. Si. 
87 (a) Posterior corolla-lobe interior in aestiva- 
tion. Seeds very small. Herbs or 
shrubs, very seldom trees. Leaves en- 
tire or dentate. Fruit capsular, the 
placentas remaining attached to the 
valves, or indehiscent. Gesneraceae. 
(0) Posterior corolla-lobe exterior in aestiva- 
tion. Seeds rather large. 88. 
88 (a) Herbs, erect or prostrate. Fruit a 
