On dead leaves, sheaths, and stems of Chionochloa ?rubra Zotov Taupo, Desert Road, 24.IV.1976, E.H.C. McKenzie (PDD 34808) [Holotype].
On dead leaves of Chionochloa sp. Fiordland, Secretary Island, 29.XI.1981, C. F. Butcher (PDD 41809).

Colonies amphigenous and on stems. Mycelium partly immersed and partly superficial, pale straw coloured, branched, smooth, septate, 2.5-3.5 µm thick. Stroma absent. Conidiophores arising of terminally and laterally on the hyphae, macronematous, mononematous, single, unbranched, erect, straight or curved, smooth, septate, brown up to 250 µm long x 4.5-6(-6.5) µm thick, often thinnest just above the base. Conidiogenous cells polytretic, integrated, terminal and intercalary, determinate, cylindrical, with (1-)6-8 pores often in a band around the middle of each cell; usually each cell of conidiophore except basal cell and sometimes the lowermost 1 or 2 cells are conidiogenous. Conidia solitary, acropleurogenous, globose, pale or very pale brown, smooth, non-septate, (4.5-)6-7(-7.5) µm.

Coloniae amphigenae et in culmo. Mycelium partim intermum et extermum, ex hyphis stramineis, ramosis, laevibus, septatis, 2.5-3.5 µm crassis. Stroma nullum. Conidiophora apicalia et lateralia, macronematosa, mononematosa, singula, eramosa, erecta, recta vel curvata, laevia, septata, brunnea, usque ad 250 µm longa x 4.5-6(-6.5) µm crassa. Cellulae conidiogenae polytreticae, in conidiophoris incorporatae, terminales et intercalares, determinatae, cylindrica, (1-)6-8 poris subequatorialibus. Conidia solitaria, acropleurogena, globosa, pallide vel pallidissime brunnea, laevia, aseptata, (4.5-)6-7(-7.5) µm. In foliis mortuis et culmo graminis Chionochloa ?rubra Zotov Holotypus PDD 34808.

Spadicoides is predominantly a lignicolous genus (Ellis 1963, Wang 1976), although some recently described species have been recorded on dead leaves (Ellis 1976, Sutton & Hodges 1978). Two species, S. atra (Cords) Hughes and S. obovata (Cooke & Ellis) Hughes, were previously known from New Zealand (Hughes 1978). S. sphaerospermum is readily distinguished from S. atra, the only other species with non-septate conidia. The conidia of S. sphaerospermum are globose and pale-coloured, whereas those of S. atra are oval or ellipsoidal and pale or dark brown. S. atra grows on dead wood and bark.