Coenogonium leprieurii (Mont.) Nyl., Ann. Sci. Nat. Bot., Ser.

Kalb, Jutarat, Boonpragob, Kansri & Kalb, Klaus, 2016, New Coenogonium species (Ostropales: Coenogoniaceae) from Thailand, new reports and a revised key to the species occurring in the country, Phytotaxa 283 (2), pp. 101-122 : 114-115

publication ID

https://doi.org/ 10.11646/phytotaxa.283.2.1

persistent identifier

https://treatment.plazi.org/id/35201F40-FFE6-9B03-B5E2-FAF13E9FFDDC

treatment provided by

Felipe

scientific name

Coenogonium leprieurii (Mont.) Nyl., Ann. Sci. Nat. Bot., Ser.
status

 

Coenogonium leprieurii (Mont.) Nyl., Ann. Sci. Nat. Bot., Ser. 4, 16: 89 (1862). ( Figs. 5D View FIGURE 5 , 7E View FIGURE 7 )

Coenogonium linkii var. leprieurii Mont., Ann. Sci. Nat. Bot., Ser. 3, 16: 47 (1851).

Thallus filamentous, mostly corticolous, seldom foliicolous on old, perennial leaves, usually forming hemispherical, shelf-like structures projecting horizontally from the substrate, yellow-green to bright green, up to 40 mm across, ecorticate; prothallus absent. Photobiont Trentepohlia , cells cylindrical, in distinct, branched filaments, 12–18 × 5–8 μm diam. Apothecia usually formed on the underside of the thallus, substipitate or conical, rounded, 0.25–0.6 mm diam., 100–150 μm high; disc flat, pale orange to yellow-orange; margin thin, not prominent, smooth, cream-colored. Excipulum paraplectenchymatous with radiating cell rows, 30–50 μm broad, colorless, outer part I+ yellow-brown, inner part I–; cells isodiametric and rather thick-walled in inner parts, 4–8 μm diam., radiately elongate and thin-walled in the periphery, 5–12 × 3–10 μm. Hypothecium 9–12 μm high, colorless. Hymenium 45–60 μm high, colorless, I+ blue then quickly reddish brown then greyish brown. Asci 40–55 × 5–7 μm. Ascospores irregularly biseriate, ellipsoid, non-septate, 5–8 × 2–3 μm, 2.4–3.1 times as long as broad. Pycnidia globose, cream-colored; conidia non-septate, fusiform-ellipsoid, 6–7 × 1.5–2 μm. Chemistry: no substances detected by TLC.

Distribution and habitat:—South and Central America, Thailand. Usually growing on bark of trees in the understory of hill evergreen forests, lower montane forests, tropical rainforests and dry evergreen forests from 825– 1375 m. In the relevant literature (e. g. Rivas Plata et al. 2006, Lücking 2008) the distribution is said to be pantropical, but we have found no reports from Africa or Australia in the literature. C. leprieurii is a new addition to the Thai lichen biota and a new report for SE Asia.

Remarks:— C. leprieurii is distinguished by its filamentous, shelf-shaped thallus which projects from the substrate, apothecia on the underside of the thallus and non-septate ascospores (erroneously reported to be 1-septate in the description by Lücking 2008). It is very similar to C. linkii , but this species has 1-septate ascospores.

Material from Thailand examined:— Nakhon Ratchasima Province: Pakchong district ; Khao Yai National Park, hill evergreen forests E of main road 3077 to Khao Khiao site, 1,375 m., 14°21’36.46’’ N, 101°23’46.83’’ E, 2 September 2005, K. Tengyong RU-22581 (kk5) ( RAMK 008362 About RAMK ) GoogleMaps ; ibid GoogleMaps .; hill evergreen forests at Khao Khiao site, 830 m., 14°23’46.61’’ N, 101°22’45.63’’ E, 11 January 2003, K. Noicharoen RU-21591 (kk5) ( RAMK 007203 About RAMK ) GoogleMaps ; ibid., lower montane forests along trail at km-stone 9 of Khao Rom site, near junction to Khao Khiao , 830 m, 14°24’22.33’’ N, 101°22’15.53’’ E, 04 April 1999, W. Khamtim 13467 ( RAMK 027805 About RAMK ) GoogleMaps ; ibid., tropical rainforest at Gibbon Camp behind food center, Khao Yai Head Quarter , 875 m, 14°26’26.19’’ N, 101°21’57.80’’ E, 1 February 2009, M. Sodamuk 13 ( RAMK 027806 About RAMK ) GoogleMaps ; dry evergreen forests along tourist trail to Krong Kaew waterfall, 825 m, 14°26’29.43’’ N, 101°22’30.97’’ E, 05 February 1999, K. Noicharoen 15380 ( RAMK 027804 About RAMK ) GoogleMaps ; ibid., dry evergreen forests at km 33 of nature trail from main road 2090 to Nhong Pak Chee area , 830 m, 14°27’35.11’’N, 101°20’09.51’’ E, J. Sutjaritturakan 12621 ( RAMK 027810 About RAMK ) GoogleMaps .

E

Royal Botanic Garden Edinburgh

K

Royal Botanic Gardens

W

Naturhistorisches Museum Wien

M

Botanische Staatssammlung München

J

University of the Witwatersrand

Kingdom

Fungi

Phylum

Ascomycota

Class

Lecanoromycetes

Order

Ostropales

Family

Coenogoniaceae

Genus

Coenogonium

Loc

Coenogonium leprieurii (Mont.) Nyl., Ann. Sci. Nat. Bot., Ser.

Kalb, Jutarat, Boonpragob, Kansri & Kalb, Klaus 2016
2016
Loc

Coenogonium leprieurii (Mont.) Nyl., Ann. Sci. Nat. Bot., Ser.

Nyl. 1862: 89
1862
Loc

Coenogonium linkii var. leprieurii Mont., Ann. Sci. Nat. Bot., Ser.

Mont. 1851: 47
1851
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