.Order 61.— SAXIFRAGES. 



215 



5-10 stamens inserted on the calyx ; the 



styles 2, distinct, with their 



2 ovaries more or less united below, and 



either free or adhering to calyx; 

 vofls capsular, many-seeded; 

 emJjryo slender, in albumen. 



.vsii^ 



.^?: 





47(5 

 Fig. 475. Section of flower of Early Saxifrage 

 (Class Book, page 371). FigAlQ. Ovary and pistils, 

 cut across to show the two cells. Fig. All. Mitella 

 diphylla; 8, a flower, magnified: 9, the fruit pods 

 open, showing the black seeds. Fig. 480. Cross-sec- 

 tion of the ovary; 1, seed cut open, showing the long 

 embryo. 



Analysis of the Genera. 



% Herbs. Petals imbricated in the bud a 



§ Shrubs. Petals valvate or convohite (twisted) in bud e 



a Flowers with 10 stamens. . . .b 



a Flowers with 5 stamens d 



b Petals 4-6, usually 5, entire c 



b Petals 5, all pinnatifid. Stamens 10. Mitrewort. Mitel'la. 1 



b Petals 0. Low, prostrate, in wet places. Water Carpet. Chrysosple'nium. 



c Pods 2-colled. Leaves simple, mostly radical. Saxif'^^age. Saxif'raga. 5 



c Pods 2-celled. Leaves bi-ternately compound, cauline. S Astil'be. 



c Pods 1-celled. Leaves palmately lobed. FaUe Mitrewort. Tiarel'la. 2 



d Styles 2, pod 2-celled. Scape reclined, 8-12'' long. W. Sullivan'tia. 



d Styles 2, pod 1-celled, Scape erect, a foot or more. M. W. Heu'chera. 



d Styles 3, pod 1-celled. Herb in tufts i' high. S. 



e Leaves opposite, simple f 



e Leaves alternate. Shrub 4-Sf erect. Eacemes white, 

 f Shrub climbing trees, &c. Flovvers white, fragrant. S. 

 f Shrubs erect. Cymes not radiate — all the flowers perfect. 

 * iShrubs erect. Cymes radiate. Stamens 8-10. 



1. MITEL'LA. Mitrewort. 



Lepuropet' 



M. S 



Ite'a. 



DECnMA'KIA. 



Philadki/^hus. 

 Hydran'gea. 



Calyx 5-cleft, bell-shaped. 



