OF BRITISH PLANTS. 419 



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 receptacle, or 

 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 num- 

 ber, inserted round a hypogynous disk. Stamens generally eight, in- 

 serted on the disk. Ovary two-lobed, two-celled, style one, stigmas two. 

 Fruit winged, separating into two one-celled carpels, each with one or 

 two seeds. 



1. Acer, 181, 187. 



Order XXI. GERANIACE.E. 



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

 mens 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 separates, carrying with 

 it the membranous pericarp. 



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



Order XXII. BALSAMINE^E. 



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

 irregular, united in pairs. Stamens five, anthers two-celled, opening 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 XXIII. OXALIDE^E. 



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

 mens 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. CALYCIFLOR^E. 



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

 into the calyx). 



Order XXIV. CELASTRINEJD. 



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. 



