351 
PERIPETALEZ. 
Dicotyledonous polypetalous plants with perigynous stamens. 
100. SaxiFRAGER. 106. TAMARISCINES. 
101. CrassuLacEz. 107. Rosacezx. 
: 102. Risesrex. 108. LecumInosz. 
: 103. CuctRBITACE2. 109. TEREBINTHACES. 
os 104, Myrraces. 110. RaamMNnez. 
105, SaLicaREz. 
ORDER C. 
SAXIFRAGEZ. 
Cuaracters.—Herbs, with simple alternate leaves, a 
monosepalous calyx of 4 or five divisions, adhering more or 
less to the ovary, a corolla of 4 or 5 petals inserted between 
the divisions of the calyx, 5 or 10 stamens, an ovary inferior, 
- or semi-superior, consisting of 2 earpels, adhering to each 
other below, but separating above into 2 short styles, rarely — 
1-celled, and the pericarp a many-seeded 2-valved capsule. 
- Exampie.—London Pride, or‘None-so-pretty (Sazifraga — 
umbrosa). ae 
Prorertres.—This is an order of little interest iname- _ 
dicinal point of view; it takes its name from the property of 
breaking down urinary concretions, which White Saxifrage Br 
(Sazifraga granulata) was formerly supposed to possess. 
The tubercles of this plant, and most of the plants inthe 
‘order, are slightly bitter, acrid, and astringent. . The root 
of Heuchera americana is said to be a powerful astringent 
