PERIPETALEA, | 359 — 
enlarged receptacle; each ovary I-celled, with 1, 2, or a 
small number of ovules ; style often lateral, or arising from 
the base of the ovary; pericarp a drupe, a pome, a follicle, 
or an achenium: seeds without albumen. 
This extensive family is divided into six sections; the 
Amygdalee; Spireacee; Dryadee; Sanguisorbee; Ro- 
sex; Pomacer. 
LL. Amyeparezx (Drupacee). Have a solitary carpel, becom- 
ing a drupe. Gum in their bark, and abound in hydro- 
cyanic acid._-Amygdalus. Prunus. 
Spmzacez. These have a fruit of 3 to 12 capsules or 
follicles, dehiscing by two valves. 
I. Dryapes (Fragariacew). These have numerous pis: 
tils set on a gynophore, which is sometimes fleshy—and — 
in the fruit numerous acheniums or drupes.—Fragaria. 
_ Potentilla. Geum. Rubus. 
IV. Sancuisorsex. These are apetalous, sometimes uni- 
sexual, Stamens few. Ovary solitary. Calyx indurat~ 
_ ed.—Alchemilla. Poterium. 
V. Rosza. These have a tubular urceolate calyx, which 
becomes fleshy, containing parietal carpels, which do not 
_ adhere to the calyx or to each other.—Rosa. 
VI. Pomacez.—In this section the pistils are from 2 to al 
united with each other and the tube of the calyx, rather 
inferior, and the pericarp is a pome. 
The Dryadex, Spireacee, and Rosew form the cael 
Lindley. The other sections are Orders (or sub-Orders) 
his System. 
2NoMICAL Properties.—The fruits of many of the 
| in this family contain a considerable quantity of sac- 
1e matter, mixed with malic acid, and are much esteem-— 
"The following are the principal kinds: the eigen 
waria vesca), the Musky or Hautboy (F. elatior), the 
berry (Rubus ideus), the Bramble (R. fruticosus), the _ 
(R. essen seis the Dewberry et 
