Abstract
Four new species of
Botryobasidium
,
B. fujianensis
,
B. fusisporellum
,
B. subconiferarum
and
B. macrosporum
, are described from east China based on morphological characteristics and phylogenetic analyses using the combined dataset of ITS+nLSU sequences.
Botryobasidium fujianensis
is characterised by a hypochnoid, floccose to cottony, white to greyish-white hymenial surface, a monomitic hyphal system with simple septa, the presence of tubular cystidioid, barrel-shaped basidia with four or six sterigmata and pip-shaped basidiospores measuring 6.0–7.9 × 2.3–3.4 μm;
B. fusisporellum
is characterised by a hypochnoid, floccose to cottony, white to greyish-white hymenial surface, a monomitic hyphal system with simple septa, the presence of tubular cystidioid, long barrel-shaped basidia with two or four sterigmata and fusiform basidiospores measuring 5.3–6.5 × 2.3–3.0 μm;
B. subconiferarum
is characterised by a hypochnoid, floccose, white to greyish-white hymenial surface, a monomitic hyphal system with simple septa, the presence of tubular cystidioid, slightly barrel-shaped basidia with four sterigmata, subcylindrical conidiophores and pip-shaped basidiospores measuring 6.2–8.6 × 2.3–3.7 μm;
B. macrosporum
is characterised by a hypochnoid, floccose, white to cream hymenial surface, a monomitic hyphal system with simple septa, the presence of tubular cystidioid, slightly barrel-shaped basidia with four to six sterigmata and fusiform basidiospores measuring 9.4–11.0 × 4.8–5.9 μm. The discovery of these four new species in east China expands the known global diversity of
Botryobasidium
and provides additional morphological and molecular data for the genus.