Persoonia – Volume 25, 2010
(4–)5–6 μm, distinguitur.
brown, 3–5 µm diam hyphae, frequently constricted at septa
and encased in a mucoid sheath which results in black, shiny
exudate on the surface of agar media; hyphal ends becoming
swollen, ellipsoid, 20–35 µm wide, 25–70 µm long, ﬁlled with
endoconidia. Endoconidia brown, thick-walled, smooth to ﬁnely
verruculose, ellipsoid to globose, 0–1-septate, (5–)6–7(–8)
Colonies spreading, flat, folded, with sparse aerial mycelium,
and smooth, lobate margins, exuding copious amounts of black
slime; reaching 15 mm diam. On oatmeal agar, potato-dextrose
agar and malt extract agar, olivaceous-black.
, Queensland, Brisbane, Slaughter Falls, 27°28'35"S
152°57'48.9"E, on leaves of Melaleuca quinquenervia, 16 July 2009, P.W.
Crous & R.G. Shivas, CBS-H 20494 holotype, cultures ex-type CPC 17223,
17224 = CBS 128213, ITS sequence of CPC 17223 GenBank HQ599594 and
LSU sequence of CPC 17223 GenBank HQ599595, MycoBank MB517541.
Notes — A megablast search in GenBank using the LSU
sequence retrieved as closest sister species Readeriella brun-
neotingens (GenBank EU019286; Identities = 887/907 (98 %),
Gaps = 7/907 (0 %)), Teratosphaeria dimorpha (GenBank
FJ493215; Identities = 886/907 (98 %), Gaps = 7/907 (0 %))
and Penidiella columbiana (GenBank EU019274; Identities =
885/906 (98 %), Gaps = 5/906 (0 %)). A megablast with the ITS
sequence revealed as closest sister species Phaeothecoidea
Gaps = 20/646 (3 %)) and Batcheloromyces leucadendri (Gen-
Bank EU707890; Identities = 593/642 (93 %), Gaps = 20/642
(3 %)). Morphologically P. melaleuca and P. proteae are distinct,
in that endoconidia of P. proteae are verruculose and larger in
× (4–)5–6(–11) μm than those of P. mela-
Fungal Planet 61 – 23 December 2010
Crous & R.G. Shivas, sp. nov.
Pedro W. Crous & Johannes Z. Groenewald, CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD Utrecht, The Netherlands;
e-mail: firstname.lastname@example.org & email@example.com
Roger G. Shivas, Agri-Science Queensland, Ecosciences Precinct, Dutton Park 4102, Queensland, Australia;
agar; hyphae with endoconidia; endoconidia. Scale bars = 10 μm.
Crous PW, Summerell BA, Mostert L, Groenewald JZ. 2008.
associated with leaf spots of Proteaceae. Persoonia 20: 59–86.