Type: Mycorrhizal Fungi; Description: Thallus monostromatic, superficial, roughly circular with entire or lobed margin, orange, composed of radiating branched filaments; on upper surfaces of leaves. Sporangiophores consisting of a single cell. Sporangia borne obliquely on a curved stalk, ovate to obovoid, 20–25 × 15–25 μm, surface roughened. Zoospores quadriflagellate. Gametangia sessile, intercalary, ovate, 20–26 × 13–22 μm, produced on the radiating filaments. Leaf spots none.

Distribution: Northland, Auckland, Coromandel, Bay of Plenty, Taranaki, Taupo, Marlborough.; 1st Record: Jennings (1896).

Significance: Not parasitic.; Host(s): Agathis australis, Alseuosmia quercifolia, Anarthropteris lanceolata, Asplenium flaccidum, A. oblongifolium, Astelia banksii, A. trinervia, Beilschmiedia tawa, Blechnum discolor, B. filiforme, Brachyglottis repanda, Carmichaelia australis, Coprosma grandifolia, C. lucida, Corynocarpus laevigatus, Cyathea dealbata, Dacrycarpus dacrydioides, Doodia australis, Freycinetia baueriana subsp. banksii, Griselinia lucida, Hedycarya arborea, Hoheria populnea, Hymenophyllum flabellatum, Knightia excelsa, Melicytus ramiflorus, Meryta sinclairii, Metrosideros fulgens, Olearia rani, Phyllocladus trichomanoides, Phymatosorus diversifolius, P. scandens, Pseudotsuga menziesii, Pyrrosia eleagnifolia, Rhopalostylis sapida, Ripogonum scandens, Trichomanes reniforme.