Fruit drupe attached to the receptacle. In some bramble fruits (such as blackberry) the receptacle is elongated and part of the ripe fruit, making the blackberry an "aggregate-accessory" fruit. The strawberry is also an aggregate-accessory fruit, only one in which the seeds are contained in achenes. In all these examples, the fruit develops from a single flower with numerous pistils. A multiple fruit is one formed from a cluster of flowers (called an "inflorescence"). Each flower produces a fruit, but these mature into a single mass. Examples are the pineapple, fig, mulberry, osage-orange, and breadfruit. In the photograph on the right,
Boletellus ananas ananas" by smooth stem without a ring, different spores, and flesh that is less tough. The Australian species "Boletellus ananiceps" has spores with narrow longitudinal ribs that do not have cross-striae. "B. dissiliens" has colors that are not red as in "B. ananas", and pores that can become reddish in maturity. Further, the cap flesh of "B. dissiliens" turns blue upon exposure to air. The fruit bodies of "B. ananas" typically grow scattered or in groups under oak and pine trees, often on their bases. In Guyana, the mushroom typically fruits singly or in pairs within above ground level on