Note on the taxonomic status of Pyrgillus tibellii Kr. P. Singh & Pushpi Singh with a world key to the species of Pyrgillus Nyl. (Pyrenulaceae: Pyrenulales)

Abstract

In the same year Kashiwadani et al. (2012) described P. cambodiensis Kashiw. et al. from Cambodia (Fig. 1). Recently, Shi et al. (2015) reported P. cambodiensis and P. javanicus (Mont. & Bosch) Nyl. as new to China from southern Yunnan and considered P. tibellii (Fig. 2) as conspecific with Pyrgillus cambodiensis following the rule of priority (Art. 11.4; McNeill et al. 2012). Shi et al. (2015), however, ignored the chemistry of P. tibellii. We have examined the holotype of P. cambodiensis (Cambodia: Siem Reap Province, Western Prasat Top, Angkor Wats complex, Siem Reap, 13°26'N, 103°51'E, alt. c. 30 m, on bark of Dipterocarpus elatus, 24 November 2010, H. Kashiwadani 50508) borrowed from TNS Japan and found it clearly distinct from the type of P. tibellii (India: Arunachal Pradesh, Papumpare district, Sankei view, on bark, alt. c. 340 m, 12 January 1997, K. P. Singh 9616) housed at ASSAM in India. Pyrgillus tibellii, although similar to P. cambodiensis in morphology and anatomy (they both have 3-septate ascospores), is easily distinguished from the latter by its larger ascospores and the presence of lichexanthone (UV+ yellow) in the thallus. FIG. 1. Pyrgillus cambodiensis, habitus (holotype). Scale = 1 mm. In colour online.

Crustose Calicioid Lichens and Fungi in Mountain Cloud Forests of Tanzania

“…Distribution : Originally described from Cambodia [55] and also known from China. This species is here for the first time reported in Africa.…”

“…Tanzanian material has previously been reported as Pyrgillus javanicus [41]. The species was discussed in [55]. New to Africa.…”

New Records of Lichens from Khadimnagar National Park Sylhet, Bangladesh. I.

“…The chemical tests were made for the identification of lichens providing the materials as K-potassium hydroxide, C-bleach [Ca(OCl)Cl], L-iodine (Lugol's solution) and weak acid (lemon juice). The taxonomic identification of lichens were made with consultation of the standard monographs and literature (Archer, 2007;Awasthi, 1975;Ciafré et al, 2020;Diederich et al, 2017;Elix and McCarthy, 1998;Flakus, 2013;Galloway, 1985Galloway, , 2007Gerasimova, 2016;Hulbert Jr., 2011;Kantvilas and Elix, 2007;Kantvilas et al, 2018;Kerr, 2014;Lückingl, 1999;Nylander, 1869;Schultz, 2008;Singh and Singh, 2012;Uyenco, 1963;Weber, 1986;Woods and Coppins, 2012). Lichens photographs were taken with the help of Nikon D-3200, Camera.…”

“…Specimen examined: Recorded on Tea (Camellia sinensis) from North Block of Khadimnagar National Park, Sylhet, AAK-Kaium 45, 10 th April 2021. b) (Singh and Singh, 2012) Thallus crustose, corticolous, found on bark, trunk, and cork, white-yellowish grey, continuous, smooth to cracked, loose. Thallus shape is definite, hyaline pigmentation is found.…”

Eight new species of Pyrenulaceae from the Neotropics, with a key to 3-septate Pyrgillus species

“…225 accepted species, including the 169 accepted in Aptroot (2012) plus the many additional species that have been described since (Aptroot et al 2012, 2013, 2014, 2015; Wijeyaratne et al 2012; Cáceres et al 2013; Lima et al 2013; Gueidan et al 2016; Mendonça et al 2016). From the genus Pyrgillus , only seven species are currently known (Aptroot 1991; Kashiwadani et al 2012; Singh & Singh 2012 a , b , 2017), and in Sulcopyrenula only four species (Harada 1999; Aptroot 2002, 2012).…”