Fungalpedia– Note 6 Spencermartinsia


Spencermartinsia A.J.L. Phillips, A. Alves & Crous


Citation if using this entry: Noorabadi MT & Hyde KD (2023) New genera in 2008. Mycosphere (in press) 

Index Fungorum Identifier 511762, Facesoffungi, MycoBank, GenBank, Fig 1

Spencermartinsia was introduced by Phillips et al. (2008), and this genus was typified by Spencermartinsia viticola Phillips, Alves & Crous (= Botryosphaeria viticola Phillips & Luque) that originally was isolated from pruned canes of Vitis vinifera in Spain. Phylogenetic analysis of combined SSU, LSU, ITS, β-tubulin and EF1-α sequences placed this genus in Botryosphaeriaceae, Botryosphaeriales, Dothideomycetes. Phylogenetic results revealed that Spencermartinsia formed a distinct clade from other allied genera such as Botryosphaeria and Dothiorella in Botryosphaeriaceae. The main morphological characteristics of this genus are brown, 2-celled ascospores with an apiculus at either end (Phillips et al. 2008).




Fig 1. Spencermartinsia viticola (redrawn from Phillips et al. 2008). a Ascomata erumpent through host bark. b Ascoma cut horizontally. c Vertical section through an ascoma. d Pseudoparaphyses. e Ascus. f Ascospores. g Ascospores with small rounded apiculi. h Conidiomata on the host bark. i Conidiogenous cells. Conidiogenous cells. k Conidia. Scale bars: a, h=500μm, b=250μm, c=50μm, d–g, i–k=10μm.


The existence of apiculi is the discriminating character between Spencermartinsia and the morphologically allied genera, Botryosphaeia and Dothiorella (Phillips et al. 2008). Spencermartinsia produces 1-septate, dark brown, striate conidia which become pigmented and septate at the early stages, while still attached to the conidiogenous cell (Phillips et al. 2008). Meanwhile, some morphological aspects of the a sexual morph (colony morphology) can also be used to differentiate this species from others in Dothiorella (Luque et al. 2005; Phillips et al. 2008). The reverse side of colonies of S. viticola become red-brown after 3–5 days on PDA at 25°C, with a progressive darkening of the pigment after 6–10 days (Luque et al. 2005; Phillips et al. 2008)

Type species: S. viticola 

Other accepted species

S. capri-amissi F.J.J. Van der Walt, Slippers & G.J. Marais

S. yunnana Y. Zhang ter & Min Zhang.



Luque J, Martos S, Phillips AJ L. 2008 Botryosphaeria viticola sp. nov. on grapevines, a new species with a Dothiorella anamorph. Mycologia 97 (5), 1111–1121.

Phillips AJL, Alves A, Pennycook SR, Johnston PR, Ramaley A, Akulov A, Crous PW. 2008 – Resolving the phylogenetic and taxonomic status of dark-spored teleomorph genera in the Botryosphaeriaceae. Persoonia-Molecular Phylogeny and Evolution of Fungi 21 (1), 29–55.


Entry by

Maryam Tavakol Noorabadi, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.


(Edited by Kevin D. Hyde)