Accessory fruit Accessory fruit An accessory fruit (sometimes called "false fruit", "spurious fruit", "pseudofruit", or "pseudocarp") is a fruit in which some of the flesh is derived not from the ovary but from some adjacent tissue exterior to the carpel. Examples of accessory tissue are the receptacle of the strawberry, pineapple, common fig, and mulberry, and the calyx of "Gaultheria procumbens" or "Syzygium jambos". Pomes, such as apples and pears, are also accessory fruits, with much of the fruit flesh derived from a hypanthium. Other example could be the "anthocarps" specific to the family Nyctaginaceae, where most of the fruit comes from
Boletellus ananas named by Moses Ashley Curtis as "Boletus ananas" in 1848, based on specimens he found near the Santee River, in South Carolina. In 1909, William Murrill described the new genus "Boletellus" and made "Boletellus ananas" the type species. According to Murrill, the taxon "Boletus isabellinus", described by Charles Horton Peck in 1897 from specimens collected in Ocean Springs, Mississippi, is a synonym of "B. ananas"; Peck described this species from undeveloped specimens. Wally Snell later doubted Murrill's conclusion in a 1933 publication; he considered the differences in the spore structure too great to consider the species conspecific with "B. ananas",