Pyrenocarpous lichens (except <i>Trypetheliaceae</i>) in Rondônia

Aptroot, André; Cáceres, Marcela Eugenia da Silva

doi:10.1017/s0024282913000534

Cited by 23 publications

(10 citation statements)

References 11 publications

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“…However, the first results of this survey for lichens in this largely primary forest shows that the region has among the highest epiphytic lichen diversity in the world. There are many so far undescribed species and genera in groups such as Graphidaceae (Cáceres et al 2014 b ), Arthoniales (Cáceres et al 2014 c ) and the pyrenocarps (Aptroot & Cáceres 2013). Surprisingly, there are undescribed species, or some described recently, that are locally abundant e.g.…”

Section: Introductionmentioning

confidence: 99%

New Trypetheliaceae from the Amazon basin in Rondônia (Brazil), the centre of diversity of the genus Astrothelium

Aptroot¹,

Cáceres

2016

The Lichenologist

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Abstract:The following 24 new species of Trypetheliaceae are described after three weeks of fieldwork in an area with a radius of 50 km around Porto Velho in Rondônia: Astrothelium bivelum with astrothelioid ascomata, 5-septate ascospores with polar gelatinous caps, and a thallus without lichexanthone; A. curvisporum with bent, 5-septate ascospores of 115-135 × 29-36 μm with a 17-22 μm thick gelatinous layer; A. decemseptatum with pseudostroma that are essentially black and look like breaking through the bark, with anthraquinones mostly on the pseudostromata but also on some parts of the thallus, best seen under UV light as the colour of the pruina is not very strong, and ascospores (7-)9-11-septate, fusiform, 50-65 × 11-17 μm; A. disjunctum with black pseudostroma and ascospores 3-septate, (27-)29-33 × (8-) 12-14 μm; A. duplicatum which is similar to A. mesoduplex, but pseudostroma are only yellowish inside and ascospores 45-55 × 11-15 μm; A. eumultiseptatum which is similar to A. eustomum, but with 9-11-septate ascospores of 65-70 × 15-17 μm; A. eustomurale which is also similar to A. eustomum, but with submuriform ascospores of 37-45 × 15-19 μm; A. flavoduplex which is similar to A. mesoduplex, but with ascospores 110-350 × 20-27 μm and the thallus containing lichexanthone; A. flavomurisporum with deeply immersed ascomata with muriform ascospores of 165-200 × 28-35 μm, with a distinctly thickened central septum and yellow oil; A. flavostromatum which is close to A. aeneoides and mainly differs by the bullate thallus and the cream pseudostromata; A. flavum which is similar to A. aeneum, but differs in the contrast between the linear to reticulate yellow stromata and the unpigmented thallus, and the ascospores of 16-18 × 6-7 μm; A. mesoduplex which is similar to A. flavoduplex, but with ascospores 90-100 × 20-23 μm and a thallus without lichexanthone; A. nigrum with mostly conical black pseudostromata that contrast sharply with the thallus, superficially resembling Pyrenula infraleucotrypa; A. novemseptatum which is similar to A. eumultiseptatum, but without lichexanthone anywhere in the thallus or pseudostroma; A. ochroleucoides which is similar to A. corallinum, but with lichexanthone on the thallus and pseudostromata; A. octoseptatum which is similar to A. eumultiseptatum, but with the whole pseudostroma, not just the ostioles, containing lichexanthone, and ascospores somewhat asymmetrical, which is highlighted by the unusual dominant even number of septa (eight) and the asymmetrically placed central septum in the case of uneven septum numbers; A. quatuorseptatum which is similar to A. octoseptatum Aptroot & M. Cáceres, but without lichexanthone, ascospores somewhat asymmetrical, which is highlighted by the unusual dominant even number of septa (four) and the asymmetrically placed central septum in the case of uneven septum numbers; A. robustosporum with solitary ascomata with an eccentric ostiole, and ascospores 11-15-septate, 90-125 × 20-27 μm; A. solitarium which is similar to A. ceratinum (Fée) Aptroot &...

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Section: Introductionmentioning

confidence: 99%

New Trypetheliaceae from the Amazon basin in Rondônia (Brazil), the centre of diversity of the genus Astrothelium

Aptroot¹,

Cáceres

2016

The Lichenologist

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“…The cover of each taxon was measured in cm 2 (Kuusinen , Kivistö and Kuusinen , Pérez‐Pérez et al , ). The different genera and/or species were identified using specialized keys supported by chemical testing (10% potassium hydroxide (K), sodium hypochlorite (C) and paraphenyldenediamine (P)) (Harris , , Marbach , Staiger , Galloway and Thomas , Kashiwadani and Nash III , Cáceres , Aptroot et al , Rivas Plata and Lücking , Ertz , Lücking et al , , Aptroot , Aptroot and Cáceres , , Moncada et al , Lücking , Nelsen et al , Breuss and Lücking , Mongkolsuk et al , Aptroot and Lücking , Herrera‐Campos et al ). Specimens lacking reproductive structures were identified to genus only.…”

Section: Methodsmentioning

confidence: 99%

Vertical distribution of epiphytic lichens onQuercus laurinaHumb. & Bonpl. in a remnant of cloud forest in the state of Veracruz, México

Castillo‐Campos

Pérez-Pérez

Córdova-Chávez

et al. 2019

Nordic Journal of Botany

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In the tropics, corticolous lichen richness and cover tend to increase from the trunk base to the top of the crown of trees. In this study we calculated the total beta diversity of the lichen community along a vertical gradient on Quercus laurina in Mexican cloud forest. By comparing the richness and cover of the lichens by zone, we show that foliose and fruticose lichens are a minor component of the total lichen species richness, but have a higher cover than the crustose lichens. Five zones were identified along each phorophyte (n = 15) with a diameter at breast height >40 cm. A total of 92 species were identified. Of these, 38% were found only in a single zone, 51% were shared between the different zones and 11% occurred across all zones. Species richness and cover increased from the lowest to the highest zones of the phorophytes. Dissimilarity in species composition between the zones could be explained by species replacement. An indicator species analysis revealed that only a few species, e.g. Hypotrachyna vexans, H. cf. sublaevigata and Ramalina cf. sinaloensis prefer a particular zone. The results show that the lichen community associated with Quercus laurina phorophytes is highly diverse and suggest that species richness and cover are related to the zone and the various growth forms.

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“…In 2012, a project to survey lichens commenced in the primary rainforests of the Amazon basin, initially in Rondônia which is situated at the SW end of the Amazon. The results published so far (Aptroot & Cáceres 2013, 2014 a , b , 2016; Cáceres et al . 2014 a , b ) show that the region may have one of the highest lichen diversities in the world.…”

Section: Introductionmentioning

confidence: 92%

New Arthoniales from Amapá (Amazonian North Brazil) show unexpected relationships

Aptroot¹,

Cáceres

2017

The Lichenologist

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Recent field trips to Amapá and the adjacent states of Amazonas and Pará uncovered unknown lichen species with unexpected relationships. The following new species of Arthoniales are described, mainly from Amapá in North Brazil: Neosergipea hyphosa, a corticolous species with an olive-green thallus, central part verrucose, marginal zone of 5–10 mm wide consisting of procumbent branching rhizohyphae, surrounded by a pinkish brown hyphal prothallus c. 3 mm wide into which the rhizohyphae protrude, globose ascomata, c. 0·1 mm diam., arranged in stromatoid groups of 5–15, with hyaline walls, without ascospores; Neosergipea septoconidiata, a corticolous species with a bluish grey thallus and bright orange, mostly conical pycnidia with fluffy hyphal surface, hyaline conidia, 3–6-septate, filiform, 12–23×1·5–2·0 μm, with rounded ends; Nyungwea pycnidiata, from a termite nest on a tree, with abundant pycnidia that are whitish, papillate, smooth, c. 0·1–0·2 mm diam., c. 0·2–0·4 mm high, at the base covered by thallus, and hyaline conidia that are simple, ellipsoid, 2·5–4·0×1·5–2·0 μm; and Opegrapha ramisorediata, a corticolous species with a thallus with initially rounded soralia that soon cover the complete thallus with a layer of fine yellowish green branched soredia, and containing gyrophoric acid. Apothecia are not known from any of these species but sequencing elucidated their generic affiliation. The genera Neosergipea and Nyungwea were previously monotypic and Nyungwea was known only from Africa. Nyungwea anguinella (Nyl.) Aptroot comb. nov. is a further new species in the latter genus, and through these two extra species we now know about the morphology of the pycnidia and apothecia of Nyungwea, which were unknown in the type species (a sterile crust).

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Pyrenocarpous lichens (except Trypetheliaceae) in Rondônia

Cited by 23 publications

References 11 publications

New Trypetheliaceae from the Amazon basin in Rondônia (Brazil), the centre of diversity of the genus Astrothelium

New Trypetheliaceae from the Amazon basin in Rondônia (Brazil), the centre of diversity of the genus Astrothelium

Vertical distribution of epiphytic lichens onQuercus laurinaHumb. & Bonpl. in a remnant of cloud forest in the state of Veracruz, México

New Arthoniales from Amapá (Amazonian North Brazil) show unexpected relationships

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