Metacapnodium pacificus Aliabadi & Berbee 2025, comb. nov.
Abstract
Metacapnodium pacificus (S. Hughes) Aliabadi & Berbee, 2025 comb. nov. Fig. 13 Basionym. ≡ Capnobotrys pacificus S. Hughes [as ‘ pacifica ’], New Zealand J. Bot. 19 (2): 218 (1981). Specimen examined. New Zealand • Wellington, Mt. Ruapehu, On leaves of Coprosma tenuifolia, Cheeseman, 11 Oct 1966, J. M. Dingley, Capnobotrys pacificus DAOM 117157 c a (ex type). Description. Subicula not observed, as the specimen was available as a microscopic slide. Mycelium of moniliform hyphae, olive-brown, finely to coarsely verrucose throughout, verrucosity most prominent at the hyphal tips. Hyphae straight to curved, with lateral branching, tapering toward the ends, cells subglobose, equal to or broader than long, to 18 μm wide, narrowing to 5 μm wide at the hyphal tips. Sexual form unknown. Asexual forms. Capnobotrys – Differentiated conidiophores not observed. Conidiogenous cells in botryose clusters, often on the concave underside of short 2–5 septate, lateral branches. Conidia olivaceous brown, initially globose, then ovoid to pyriform, approaching triangular due to narrowing from the proximal cell to the tip of the distal cell, sometimes inequilateral, bearing one, supramedial septum, proximal cells are broader than distal cells (Fig. 13 D). Conidia measured 10–12 × 7–8 µm, N = 14, Q = 1.4. Capnophialophora – No capnophialophora observed in specimen. Hosts and distribution. On leaves of woody dicots, collected in New Zealand, Chile, Hawaii (Hughes 1981). Notes. Hughes (1981): figs 19 N-R illustrate capnophialophora in DAOM 105684 b and DAOM 106093 d. Hughes (1981) reports that phialides, when present, have constrictions at the base of the collarette, distinguishing this species from the otherwise similar M. atro-olivaceus. Darker color, coarse warts on hyphal surfaces, and narrower hyphae distinguish M. pacificus from M. moniliforme (Hughes, 1981) and several other species with capnobotrys forms.
Fields of Study & Subjects
Plant Pathogens and Fungal Diseases
Yeasts and Rust Fungi Studies
Plant and Fungal Species Descriptions
Publication details
- Publication date
- 4 March 2026
- Language
- EN