Lichen diversity in colombian caribbean dry forest remnants
Lücking, Robert
Moncada, Bibiana
Habibe, María Cristina Martínez-
Salgado- Negret, Beatriz E.
Celis, Marcela
Zamora, Oscar Rojas-
Rodríguez- M., Gina M.
Brokamp, Grischa
Borsch, Thomas
Caldasia
2019
2019-06-30
41
1
94
214
Lucking, Moncada
Lucking, Moncada & M. C. Martinez
2019
[640,1111,688,713]
Gastropoda
Cimidae
Graphis
Animalia
Ostropales
13
207
Mollusca
species
mokanarum
sp. nov.
( Fig. 3c).
Diagnosis.Differing from Graphis microspermain the larger ascospores and the stictic acid chemistry.
Type. COLOMBIA. Atlántico: Usiacurí, Distrito Regional de Manejo Integrado( DMI) Luriza; 10º44’22” N, 75º01’24” W, 100–200 m; 1 December 2015; R. Lücking, B. Moncada et al. 42930( UNO, holotype; B, isotype).
Description.Thallus corticolous, epiperidermal, up to 10 cmdiam., continuous, light greenish grey, uneven to minutely verruculose, opaque; prothallus not observed. Thallus in section 40–50 µmthick, with distinct. prosoplectenchymatous cortex and distinct photobiont layer, blurry through incrustation with numerous small crystals. Ascomata lirellate, irregularly branched, erumpent, 1–5 mmlong, 0.3–0.4 mmbroad, 0.15–0.2 mmhigh; disc concealed; labia entire, apically exposed, whitish, with thick, lateral to almost complete, uneven to verruculose thalline margin. Excipulum uncarbonized, 30–50 µmbroad, orangebrown; hypothecium 10–15 µmhigh, hyaline to yellowish. Hymenium 80–100 µmhigh, clear; paraphyses unbranched, apically smooth. Asci 80–90 × 20–25 µm, oblong. Ascospores 8 per ascus, muriform, with (5–) 7 transverse septa and 1–3 longitudinal septa per segment, 25–30 × 10–12 µm, oblongellipsoid, with thickened septa and rounded lumina, hyaline, I+ violet-blue. Secondary chemistry: stictic acid, thallus in section with K+ persistently yellow efflux.
Etymology.This new species is dedicated to the Mokaná, the only indigenous community in Atlántico( Borda 2009, Montoya and Siegler 2010, 2011). The name is said to mean “ those without feathers” in the Mokaná language, but this interpretation is disputed ( Montoya and Siegler 2010). The Mokaná language has become extinct, but the community, which was considered near-extinct about three decades ago, is recovering its cultural traditions in a process of re-indigenization ( Borda 2009).
Remarks.Because of its uncarbonized excipulum, this species corresponds to the concept of the genus Hemithecium, which has now been subsumed under the genera Graphisand Allographa( Lücking and Kalb 2018). Among these two genera there are only two species with uncarbonized excipulum, small, muriform ascospores, and secondary substances: G. microsperma(Chitale, Makhija & B. O. Sharma) Lücking & Kalbfrom Indiadiffers in the smaller ascospores (15–20 × 8–14 µm) and the formation of norstictic instead of stictic acid, whereas Allographa dispersa(Redinger) Lücking & Kalbagrees in ascospore size, but also differs in the norstictic acid chemistry and the very short, prominent, white lirellae contrasting with the brownish thallus. The new species is morphologically similar to the widespread Graphis implicataFée, which differs in the transversely septate ascospores and lack of secondary substances.
Additional specimen examined. COLOMBIA. Atlántico: Piojó, Reserva Forestal Protectora( RFP) El Palomar; 10º45’47” N, 75º08’56” W, 200–600 m; 18 March 2016, R . Lücking, B. Moncada et al. 42975(B, UNO, paratypes).
2565375026
2015-12-01
DMI, R, UNO
Lucking, B
Colombia
Usiacuri
150
10.739445
Luriza
21
-75.02334
Distrito Regional de Manejo Integrado
13
207
1
Atlantico
holotype
2565375025
RFP
El Palomar
Colombia
Reserva Forestal Protectora
Piojo
14
208
1
Atlantico
2565375024
2016-03-18
R
400
10.763056
21
-75.14889
14
208
1
2565375029
UNO
Lucking, B
14
208
1
paratype