Genus Cercospora in Thailand: Taxonomy and Phylogeny (with a ...

Fig. 52 – Line drawings of Cercospora ficina
on Ficus religiosa. a. Conidia. b. Conidiophores
and stroma. Bars = 50 μm. (Meeboon
2009).
densely fascicules, arising from stomata, branched,
subcylindrical, 2–9-septate, geniculate to
sinuous, erect to decumbent, smooth, pale
yellow to pale brown. Conidiogenous cells
integrated, terminal, monoblastic to polyblastic,
sympodially proliferating. Conidiogenous loci
2–2.5 μm diam, conspicuous, thickened and
darkened. Conidia 42.5–161 × 2–4.5 μm,
solitary, narrowly obclavate to subacicular,
straight, hyaline, 7–14-septate, smooth, apex
subacute, base obconically truncate, hilum 1.5–
2.5 μm diam., thickened and darkened.
Specimen examined – THAILAND,
Chiang Mai Province, Chiang Mai University,
Faculty of Agriculture, on leaves of Ficus
religiosa L. (Moraceae), 18 August 2008,
Jamjan Meeboon (BBH 23557).
Hosts – Ficus carica, F. hispida, F.
religiosa, F. uliginusa, F. urceolaria, Streblus
asper (Moraceae) (Crous & Braun 2003).
Distribution – India, Indonesia, Nigeria,
Pakistan, Sudan, Uganda, USA (Crous &
Braun 2003).
70
Notes – The first report of C. ficina from
Thailand was by Meeboon (2009).
Cercospora elasticae A. Zimm., Bull. Inst. Bot.
Buitenzorg 10: 17 (1901).
(= C. apii s. lat.) Fig. 53
Leaf spots 5–8 mm diam., distinct, amphigenous,
scattered, circular or subcircular to
angular, sometimes forming large symptoms,
up to 30 mm diam., greyish brown, with dark
margins. Caespituli epiphyllous. Stromata 18-
24 μm diam., intraepidermal, small, composed
of globose to subglobose, brown to blackish
brown cells. Conidiophores 63–139 × 3–4 μm,
5–8 in loose and divergent fascicules, 2–4septate,
arising from stromata, erect to decumbent,
smooth, pale yellow to pale brown,
unbranched, subcylindrical, geniculate to sinuous.
Conidiogenous cells integrated, terminal,
holoblastic, monoblastic to polyblastic, sympodially
proliferating. Conidiogenous loci 2–3
μm diam., conspicuous, thickened and darkened.
Conidia 120–160 × 3 μm, solitary, acicular,
8–13-septate, hyaline, smooth, truncate at the
base, with acute to subacute apex, hila 2–2.5
μm diam., thickened and darkened.
Specimen examined – THAILAND,
Chiang Mai Province, Pang Da Royal project,
on leaves of Ficus carica L. (Moraceae), 5
August 2008, Jamjan Meeboon (BBH 23728).
Hosts – Ficus carica, F. elastica
(Moraceae) (Crous & Braun 2003).
Distribution – India, Indonesia, USA,
Venezuela (Crous & Braun 2003).
Notes – The first report of C. elasticae
from Thailand was by Meeboon (2009).
Literature – Chupp (1954, p. 395).
Nyctaginaceae
Cercospora neobougainvilleae Meeboon,
Hidayat & C. Nakash., Sydowia 60: 254 (2008).
Fig. 54)
Leaf spots 2–8 mm diam., amphigenous,
orbicular, center pale brown, with dark brown
margin. Caespituli epiphyllous. Stromata 11.5–
71.5 μm diam., intraepidermal, well-developed,
composed of globose to subglobose, dark
brown cells. Conidiophores 13.5–165 × 1–9
μm, 4–20 in loose to dense fascicules, 1–3-