OF BRITISH PLANTS. 419 



dinally. Glands four or five at the base of the petals. Ovary with 

 from one to ten cells. Style one. Capsule with one or many seeds 

 in each cell. 



1. Tilia, 227, 231. 



Order XIX. HYPERICINE.E. 



Sepals four or five, often coherent, persistent, with glandular dots, 

 imbricate. Petals four or five, twisted. Stamens numerous, polya- 

 delphous. Styles several. Fruit a capsule or berry, with many 

 cells, and many valves. Seeds numerous, minute, on a central re- 

 ceptacle, ox on the incurved margins of the valves. 

 1. Hypericum, 301, 301. 



Order XX. ACERINE.E. 



Calyx four-, five or nine-parted, imbricate. Petals of the same 

 number, inserted round a hypogynous disk. Stamens generally 

 eight, inserted on the disk. Ovary two-lobed, two-celled, style one, 

 stigmas two. Fruit winged, separating into two one-celled carpels, 

 ach with one or two seeds. 



1. Acer, 181, 187. 



Order XXI. GERANIACEJE. 



Sepals five, persistent, imbricate. Petals five, clawed, twisted. 

 Stamens generally monadelphous, two or three times as many as 

 the petals, some often abortive. Fruit of five carpels, each having 

 an indurated style adherent to the axis, from which it finally sepa- 

 rates, carrying with it the membranous pericarp. 



1. Geranium, 279, 280. 2. Erodium, 279, 280. 



Order XXII. BALSAMINE^. 



Sepals five, irregular, deciduous, the lower spurred. Petals four, 

 irregular, united in pairs. Stamens five, anthers two-celled, open- 

 ing at the tip by a longitudinal fissure. Ovary five-celled. Fruit 

 with five elastic valves. Seeds solitary or numerous, pendulous. 

 1. Impatiens, 111, 127. 



Order XXHL OXALIDE^E. 



Sepals five, persistent, imbricate. Petals five, equal, twisted. 

 Stamens ten, unequal, monadelphous ; anthers two-celled. Ovary 

 five-celled, styles five. Capsule with five or ten valves. Seeds 

 several. 



1. Oxalis, 192, 206. 



Section II. CALYCIFLOILE. 



Petals distinct, and, with the stamens, perigynous (inserted 

 into the calyx}. 



Order XXIV. CELASTRINE^l. 



Sepals four or five, imbricate. Petals four or five, inserted into 

 a fleshy disk. Stamens alternate with the petals. Ovary sunk in 

 the disk, with three or four cells, the cells with one or two erect 

 seeds. 



1. Staphylea, 114, 158. 2. Euonymus, 111, 133. 



