Euantennaria Speg., Physis, B. Aires 4: 284 (1918), MycoBank: MB 1908
Parasitic on pine needles. Mycelium superficial, dark, flattened. Hyphae cylindrical, straight to irregularly curved, occasionally anastomosing, septate, finely or coarsely roughened, pale brown to brown, lateral repent branches occur at right angles or at a wide angle and may be solitary or opposite. Sexual state: Ascomata perithecia, unilocular, superficial on hyphae, scattered, subglobose, brown to dark brown, membranous, ostiolate without periphysoids, surrounded by cylindrical hypha appendages, containing few asci. Peridium thick, dark, composed of one layer of dark brown cells of textura angularis . Pseudoparaphyses lacking. Asci 4–8-spored, bitunicate, ellipsoidal, thin-walled, sessile, with an ocular chamber. Ascospores irregularly arranged in asci, ellipsoidal, pale brown to brown, 3–7-multi-septate, or dictyoseptate, with or without mucronate ends, rounded at the ends, slightly or not at all constricted at the septa.

Type species : Euantennaria tropicicola Speg., Boln Acad. nac. Cienc. Córdoba 23(3–4): 549 [no. 448, reprint pages 187] (1919)

Fig. Euantennaria mucronata (Material examined: NEWFig 49 Euantennaria mucronata (Material examined: NEWZEALAND, Canterbury, on Nothofagus solandri var. cliffortioides, 14May 1963, S.J. Hughes, PDD 21317) a Type collection packet. b Typespecimen. c Perithecia. d, e Cross section of ascostroma. f, g Asci. h 1–7Ascospores. i Synnemata. j, k Synnema with head of conidia. l, mHyphae from teased, mature synnema with conidia. n-p Cluster ofterminal conidiogenous cells on erect hyphae.. q Anastomosed hyphae.r Hyphal appendages on ascostroma. s, t Branching hyphae with septa.u1-u13 Conidia. Scale bars: f–g, h1–h7 =20μm, d, e =100μm. n, q–r,u6–u13 =20μm, s, u1–u5 =50μm, o =200μm