Alternaria vicatiae L. He & J. X. Deng sp. nov. Fig. 2 B–E

MycoBank: 834478

Etymology:—In reference to the host genus, vicatia.

Descriptions:— Colonies on PDA buff to salmon, ochreous to sienna in reverse, velvety, 79‒82 mm in diam. After 7 days at 25 °C in darkness (Fig. 2B). On PCA: conidiophores straight or curved, smooth-walled, 45‒159 × 4‒7.5 μm with 2‒8 septa (Fig. 2C); conidia solitary, long-narrow ovoid or ellipsoid body, apex rounded, base narrow abruptly, 48‒94 × 12‒24 (‒34) μm in size, 5‒12 transverse septa; beak long-narrowed filiform, single commonly, 1-branched from beak rarely, 126‒350 × 2‒5 μm in size (Fig. 2D‒E). On V8A: conidiophores 34‒93 (‒125) × 4‒7.5 μm with 3‒7 septa; conidia solitary, long-ovoid body, 38‒89 × 12‒23 μm with 5‒11 transverse septa; beak filiform, most singly, sometime 1-branched, occasionally 2-branched, 129‒270 × 2.5‒5 μm in size.

Materials examined:— China, Gansu Province, Linxia Hui Autonomous Prefecture, Hezheng county, Hezheng Medicinal Botanical Garden of Gansu University of Chinese Medicine located in Gansu, from yellowish leaves with necrotic symptoms of Vicatia thibetica, 1 Jul. 2017, J.X. Deng. deposited by L. He, living cultures YZU 171341 and YZU 171342.

Notes:—The species produces conidia in small body with solitary or 1-branched beak, occationally 2-branched beak (only on V8A), which was easily could be differentiated from A. herbiculinae (larger conidial body) and A. saposhnikoviae (solitary beak) (Table 2). It is distant from A. dauci and A. poonensis in the phylogenetic tree, but also obviously different in their morphology (Table 2).