Ramulosin, a C10H14O3 Compound produced by the Fungus Pestalotia ramulosa

EARLY in 1959 we obtained through the courtesy of Dr. D. Brewer of the Atlantic Regional Laboratory a non-sporulating strain of Pestalotia ramulosa v. Beyma, an imperfect fungus belonging to the order Melanconiales. This strain was received as Truncatella ramulosa (v. Beyma) Steyaert, and is present in the Agricultural Research Service Culture Collection as NRRL 2826. When originally isolated by Brewer1 from the tailing trough slime of a paper mill in New Brunswick, Canada, the organism formed spores typical of the species, but became asporogenous during subsequent transfers.