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 Cyclaneusma minus
SynonymsNaemacyclus niveus
Naemacyclus minor
BiostatusPresent in region - Exotic
Article: Gadgil, P.D. (in association with Dick, M.A.; Hood, I.A.; Pennycook, S.R.) (2005). Fungi on trees and shrubs in New Zealand. Fungi of New Zealand. Ngā Harore o Aotearoa 4: xi + 437 p. Hong Kong: Fungal Diversity Press.
Description: Type: Foliicolous Fungi; Description: Ascomata apothecial, scattered, subepidermal, somewhat rectangular in appearance when partially open, elliptical when fully open, waxy, reddish-brown when young, later becoming concolorous with the needle surface, 0.1–0.65 (mostly 0.3–0.35) × 0.2–0.25 mm; as they develop, emerging through the needle epidermis, which is torn but remains hinged; swelling when mature and moist, pushing back the hinged epidermis to expose a slightly convex, straw-coloured hymenial layer; rarely found on needles before they are shed but developing rapidly on fallen needles. Asci subcylindrical, 90–110 × 8–10 μm. Ascospores filiform, 0–2-septate, 65–85 × 2–3 μm, hyaline. Conidiomata pycnidial, scattered, immersed, globose to subglobose, 0.1–0.2 mm in diameter. Conidia bacilliform, 0-septate, 6–10 × 1 μm, hyaline.
Distribution: Distribution: (* = districts with a high incidence) *Northland, *Auckland, Coromandel, *Waikato, *Bay of Plenty, Taranaki, *Taupo, Rangitikei, Wanganui, Wellington, *Gisborne, Hawkes Bay, Wairarapa, Nelson, Buller, *Westland, Fiordland, Marlborough Sounds, Marlborough, North Canterbury, Mid Canterbury, South Canterbury, Otago Lakes, Central Otago, *Dunedin, *Southland.; 1st Record: Gilmour (1959: as Naemacyclus niveus).
Article: Dingley, J.M. (1969). Records of plant diseases in New Zealand. New Zealand Department of Scientific and Industrial Research, Bulletin 192: 298 p. Wellington:.
Notes: Gilmour (1961) in a random survey of fungi associated with needle cast of Pinus spp. in
New Zealand showed that Naemacyclus was common. Gilmour (1966a) stated that it was
particularly severe after the cool, wet summers in 1953, 1956, and 1962. It is of minor
economic importance.
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