114 CLASS-BOOK OF BOTANY. 
sistent petals becoming succulent, enclosing the achenes; in 
Snowberries (Gaultheria) by the succulent calyx; and in 
Muhlenbeckia and Cassytha by the succulent perianth, &. 
In some genera —e.g., in 
Gaultheria—every gradation 
may be traced between truly 
dehiscent dry capsules, and 
indehiscent berries enclosed 
in the succulent calyx. In 
several other cases it is not 
the fruit at all, but some 
Fig, 226, Fruit of Muhlen- 
Fig. 225, Fruit of Snowberry. beckia (mag.). 
other part, which becomes succulent. Thus, in Hzocarpus 
and the fruits of the familiar Red-, Black-, and White-pines 
and Totara—all species of Podocarpus—it is the peduncle 
bearing the nut which similates a drupe. In the Strawberry 
Fig. 227. Succulent receptacle of Fig, in longitudinal 
section. 
it is the receptacle of the flower, in the Fig the common 
receptacle of the whole inflorescence become extremely con- 
cave, and in the Pine-apple it is the whole spike of flowers. 
