马尾松蓝变木材中长喙壳属的两个新种

Two New Species of Ceratocystis on Pinus massoniana Staining Wood

鉴定和描述了马尾松蓝变木材中长喙壳属的两个新种:松生长喙壳(Ophiostoma pinicola G. H.Zhao sp. nov.)和木生长喙壳(Ophiostoma lignicola G. H. Zhao sp. nov.)的形态特征。

The paper reports two new species of the genus Ophiostoma H. & P. Sydow collected by the author in recent years. Chinese descriptions, latin diagnoses and figures for each species are given. They are growing on the wood of Pinus massoniana.Wood staining of P. massoniana is associated with the Ceratocystis pinicola G. H. Zhao sp. nov.. Perithecia are superficial and with the bases immersed in the agar plate. The black base is globose and 126.9 ～183.3 μm in diameter. The superficies of the ornamented with net-like brown hyphae, 5～6μm in diameter. The neck of the perithecia is black, straight or slightly curved. There are various ornaments on the neck. Its dimensions are 84.4 ～169.2μm in length, 26.9 ～ 40.4μm in diameter at the base, 16.8 ～33.7μm at the tip. Without ostiolars hyphae, the asci are difficult to find. Ascospore are unicellular, hyaline, oblong, without gelatinous sheath and its dimensions are (3.4 ～3.9)μm ×(1.9 ～ 2.6)μm. Wood staining of P. massoniana is relation to the C. lignicola G. H Zhao sp. nov.. The perithecia are superficial or immersed in PDA medium. The black base is globose and 87～169.2μm in diameter. The surface of the perithecia is smooth. The neck of the perithecia is straight or slightly curved, crude, 287 ～ 352μm in length, 23.6 ～ 54.6μm in diameter at the base, 20~ 20.6μm at the tip. Ostiolar hyphae absent. The asci are difficult to find. Ascospores are unicellular, hyaline, oblong, without gelatinous sheath, and its dimensions are (3.7 ～ 4.4) μm × (2.4 ～ 3.0)μm.