The phylogeny of the genera Periconiella, Ramichloridium,
Rhinocladiella and Veronaea was explored by means of partial
sequences of the 28S (LSU) rRNA gene and the ITS region (ITS1, 5.8S rDNA and
ITS2). Based on the LSU sequence data, ramichloridium-like species segregate
into eight distinct clusters. These include the Capnodiales
(Mycosphaerellaceae and Teratosphaeriaceae), the
Chaetothyriales (Herpotrichiellaceae), the Pleosporales, and
five ascomycete clades with uncertain affinities. The type species of
Ramichloridium, R. apiculatum, together with R. musae,
R. biverticillatum, R. cerophilum, R. verrucosum, R. pini, and three new
species isolated from Strelitzia, Musa and forest soil,
respectively, reside in the Capnodiales clade. The human-pathogenic
species R. mackenziei and R. basitonum, together with R.
fasciculatum and R. anceps, cluster with Rhinocladiella
(type species: Rh. atrovirens, Herpotrichiellaceae,
Chaetothyriales), and are allocated to this genus. Veronaea
botryosa, the type species of the genus Veronaea, also resides
in the Chaetothyriales clade, whereas Veronaea simplex
clusters as a sister taxon to the Venturiaceae (Pleosporales), and is
placed in a new genus, Veronaeopsis. Ramichloridium
obovoideum clusters with Carpoligna pleurothecii (anamorph:
Pleurothecium sp., Chaetosphaeriales), and a new combination
is proposed in Pleurothecium. Other ramichloridium-like clades
include R. subulatum and R. epichloës (incertae sedis,
Sordariomycetes), for which a new genus, Radulidium is
erected. Ramichloridium schulzeri and its varieties are placed in a
new genus, Myrmecridium (incertae sedis, Sordariomycetes).
The genus Pseudovirgaria (incertae sedis) is introduced to
accommodate ramichloridium-like isolates occurring on various species of rust
fungi. A veronaea-like isolate from Bertia moriformis with
phylogenetic affinity to the Annulatascaceae (Sordariomycetidae) is
placed in a new genus, Rhodoveronaea. Besides
Ramichloridium, Periconiella is also polyphyletic.
Thysanorea is introduced to accommodate Periconiella papuana
(Herpotrichiellaceae), which is unrelated to the type species, P.
velutina (Mycosphaerellaceae).