New Species of Penicillium

Abstract

Eleven spp. and one var. of Penicillium are descr. as new The new forms include 5 ascosporic spp. P. parvum and P. levitum produce monoverticillate penicilli and perithecia that are at first pseudoparenchymatous throughout. They are assignable to the ascosporic series typified by P. javanicum P. rotundum and P. helicum unmistakably represent members of the P. luteum series and produce soft, loose-textured perithecia. Conidial structures, although often fractional, are typically biverticillate and symmetrical with lanceolate sterigmata. P. striatum produces perithecia of the type characteristic of the P. luteum series, but fails to develop either symmetrical penicilli or lanceolate sterigmata. Its relationship remains in doubt. One sclerotigenic sp., P. lapidosum, with typically monoverticillate penicilli is descr. It is closely related to P. thomii. Nonascosporic sp. and one var. as follows are descr. P. capsulatum with monoverticillate penicilli borne on short branches from ascending hyphae, assignable with other ramigenous spp.; P. lavendulum, with asymmetric penicilli and cellular elements conspicuously echinulate, is assignable to the Asymmetrica-Funiculosa near P pallidum P. piceum, P. aculeatum, P. diversum and P. d. var. aureum represent members of the Biverticillata-Symmetrica section and are assignable to series typified by the well-recognized spp., P. funiculosum, P. purpurogenum S and P. tardum, respectively.