Order 61.— SAXIFRAGES. 



207 



5-10 sta7n€ns inserted on the calyx; tlie 



sfijles 2, distinct, with their 



3 ovaries more or less united below, and 



either free or adhering to calyx ; 

 vod.^ capsular, many-seeded ; 

 emhryo slender, in albumen. 



// 



475 

 Fig. 4T5. Section of flower of Early Saxifraore 

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

 cut across to show the two cells. Fig. 477. Mitella 

 diphylla; S, a flower, magnified; 9, the fniit pods 

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

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

 embryo. 



Analysis oftlie Genera. 



% Kerbs. Petals imbricated in the bud a 



§ Shrubs. Petals valvate or convolute (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. Mitreicott. Mitel''la. 



b Petals 0. Low, pro.^tvate, in wet places. Wafer Carpet. CnRYsos^L^/^'IUM. 



c Pods 2-cellcd. Leaves simple, mostly radical. Saxifrage. Saxif'raoa. 



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



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



d Styles 2, pod 2-celled. Scape reclined, 8-1 2Mong. W. Sullivan^tia. 



d Styles 2, pod 1-celled. Scape erect, a foot or more. M. "W. IIeu'chkra. 



d Styles 3, pod 1-celled. Herb in tufts 4'' high. S. Lepukopet''alon. 



e Leaves opposite, simple f 



e Leaves alternate. Shrub 4-Sf erect. Eaccmes white. 

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

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

 f Shrubs erect. Cymes radiate. Stamens 8-10. 



M. S. Ite'a. 



Deccma''kia. 



PuiLADEI.''rHUS. 



IIvdkan'gea. 



1. MITEL'LA. Mitrewort. 

 Calyx 5-cleft, bell-shaped. Petals 5, pinnatifid with linear divisions, 



