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 spirally arranged, faint golden encrusting pigments that can be seen in KOH, Melzer's reagent, and water. Clamp connections are absent in this species. The typical variety of "Boletellus ananas" has consistently larger fruit bodies than "B. ananas" var. "minor" Singer from Brazil and Nicaragua, and lacks the thick-walled cheilocystidia of "B. ananas" var. "crassotunicatus" Singer from Nicaragua and Panama. Although the mushroom is used as a food in Mexico, field guides list it as "inedible" or "not recommended". "Strobilomyces strobilaceus" is roughly similar in appearance because of its rough scaly cap and lacerated margin, but may be distinguished from "B.