New or otherwise interesting Lichens. VI, including a lichenicolous fungus
Kalb, Klaus
Buaruang, Kawinnat
Mongkolsuk, Pachara
Boonpragob, Kansri
Phytotaxa
2012
2012-01-25
42
35
47
3234T
Kalb & Jonitz
Kalb & Jonitz
2012
[151,609,1355,1382]
Arthoniomycetes
Arthoniaceae
Cryptothecia
Fungi
Arthoniales
5
40
Ascomycota
species
napoensis
sp. nov.
Sicut Cryptothecia candida (Kremp.) R. Sant., sed materia chemica differt.
Type:— ECUADOR. Napo: Between Tenaand Pto. Misahuallí, a few km W of Misahuallí, walking trail to ‘ Cascada de Latas’, on bamboo stipes in a tropical rainforest, 480 m, 01°01.9’ S, 77°44’ W, 3 September 2011. K. Kalb, J. Kalb& H. Jonitz( holotypehb. Kalb 38968, isotype UPS).
Etymology:—The specific epithet refers to Napo Provincein Ecuadorwhere the typewas collected.
Thallus up to 4 cmwide, but sometimes several thalli confluent and then forming patches up to 10 cmwide, firmly attached to the substrate, smooth, dull, grey, greenish grey to green, heteromerous, thin, up to 50 µmthick; prothallus byssoid, brownish to black; medulla white, I+ blue; photobiont trentepohlioid, with several cells aggregated. Ascigerous parts delimited, round to elongated, raised, white, I+ violet, 0.4–1 mmdiam. Paraphysoids tightly enclosing the asci. Asci frequent, ± globose, ca. 50 µmdiam., walls 5–6 µmthick, usually with (4–)6(–8) ascospores. Ascospores ellipsoid but often curved and slightly thickened in the middle, with 9–13 transverse and 1–3(–4) longitudinal septa, (40–)45–55(–60) × (12–)13–15(–18) µm. Chemistry: confluentic acid (major), 2’- O-methylmicrophyllinic acid (trace) and 2’- O-methylperlatolic acid (trace) [J. Elix 2011, HPLC, TLC].
Notes:— Cryptothecia napoensisis closely related to the epiphyllous C. candida,and initially a new species was not described despite its occurence on bamboo. Bamboo culms provide a habitat often exploited by foliicolous species ( Santesson 1952). However, C. candidais distinguished by its slightly larger ascospores (48–)52–60(–65) × (16–)17–20(–22) µm ( Thor 1997) and especially by its alternative chemistry, i.e. not gyrophoric acid as mentioned by Thor (1997), but 2’- O-methylperlatolic acid and 2’- O-methylanziaic acid ( Lücking et al.2006). The morphologically identical neotropical C. filicinadiffers in having perlatolic acid. Until now, the chemistry of the new species is unique within the genus.
3128939304
2011-09-03
UPS
K. Kalb & J. Kalb & H. Jonitz
Ecuador
Between Tena
480
-1.0316666
Cascada de Latas'
930
-77.73333
Misahualli
5
40
1
Napo
holotype