the genus Coccocarpia (Peltigerales: Coccocarpiaceae) - Instituto ...

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$Estimación de las poblaciones de Jilguero \(Myadestes melanops ...$

statements by ARVIDSSON (1983: 74), this might represent a synonym of C. guimarana sensu SWINSCOW & KROG (1976). Distribution and Ecology: Pantropical, apparently typical of lowland rainforest with a more or less pronounced dry season. Selected specimens examined: COSTA RICA. Puntarenas: Carara National Park, Jul 2002, Lücking 15615d (F, INB-3980902, USJ). Coccocarpia aff. imbricascens Nyl. Fig. 2F Notes: ARVIDSSON (1983) gives only the type as belonging to this species, with unknown locality data and thus unknown distribution. In the meanwhile, the taxon has been reported from South America (Venezuela, Guyana, Brazil) and the eastern Paleotropics (Thailand) and thus seems to be possibly pantropical (MARCANO et al. 1995). However, as discussed under Coccocarpia aff. gallaicoi, the identification of this taxon is not straightforward and the aforementioned citations might include misidentifications. We have studied the type specimen of C. imbricascens and found that it has a yellow pigmented medulla, a fact not mentioned by ARVIDSSON (1983). The present material agrees perfectly with the type, except that the medulla is unpigmented. Since yellow pigments (both cortical and medullary) are rare within Coccocarpia, the present material seems to be specifically different from C. imbricascens, but is to scanty to allow a formal description. Both taxa are characterized by their very short, rounded, imbricate lobes, which give the thallus an almost squamulose appearance, similar to C. gallaicoi and C. aff. gallaicoi. Selected specimens examined: COSTA RICA. Guanacaste: Volcán Tenorio National Park, Alto Masis, Mar 2006, Chaves 2556 (INB-4010098). Coccocarpia microphyllina Lücking & Aptroot sp. nov. Fig. 2G–H Species nova similis Coccocarpia epiphylla sed lobulis phyllidiis marginalis instructis differt. Typus: COSTA RICA. Puntarenas: La Amistad International Park, Jun 2002, Lücking 15212a (F – holotype). Thallus corticolous, foliose, starting as round colonies but covering irregular areas of up to 20 mm diam. Lobes thin, flat, 0.4–0.7 mm wide but tips more or less flabellate and up to 1 mm wide, anisotomically branched and dissected, leaving rather large interspaces; lobe apices slightly ascending but tips curved downward. Upper surface greenish grey when moist, plumbeous to bluish grey when dry, with thin, longitudinal, white striae. Lower surface black, with numerous, black, unbranched, 0.1–0.2 mm long rhizines forming a mat, not or scarcely protruding from under the lobe margins. Lobe margins phyllidiate. Phyllidia numerous, ascending, elongated, branched, 0.1–0.4 × 0.05–0.1 mm, forming a characteristic dissected rim. Apothecia rare, up to 3 mm diam; disc orange-brown to red- 444
own, more or less flat and with indistinct, concolorous margin, with scattered white, stellately arranged, 0.3–0.5 mm long rhizines attaching the apothecia to the thallus. Ascospores broadly ellipsoid to subglobose, 5–7 × 4–6 µm. Pycnidia not observed. Chemistry: No substances detected by TLC. Notes: This new species is most similar to Coccocarpia epiphylla in thallus characters, but differs in the presence of marginal, branched, dorsiventral phyllidia. So far, phyllidia as defined here (see above) were unknown in the genus Coccocarpia (ARVIDSSON 1983), but similar structures are known from other Peltigerales, e.g. in Sticta carolinensis (MCDONALD et al. 2003). Coccocarpia guimarana is also similar in thallus morphology, but differs in having laminal, cylindrical isidia. Coccocarpia prostrata, another new species described below, is superficially similar in having ascending lobes that resemble the phyllidia of C. microphyllina. However, these lobes are clearly of primary origin, while in the latter, the phyllidia are secondary lobules produced marginally along the primary lobes. Also, the main lobes in C. prostrata are linear, rather than flabellate, and narrower. Distribution and Ecology: Known from a few collections in wet montane rainforest. Selected specimens examined: COSTA RICA. Cartago: Irazu National Park, July 2002, Sipman 48327 (B, INB-3986727). Tapantí National Park, Apr 2003, Trest 1375e (INB-4031197, WIS). Guanacaste: Novasa Wind Power Project, Mar 2004, Will-Wolf 12915k (INB-4031198, WIS). Puntarenas: La Amistad International Park, Jun 2002, Sipman 48010l (B, INB-3927515), 48020e (B, INB-3927547). Puntarenas: La Amistad International Park, Jun 2004, Chaves 1737 (INB-3939332) Coccocarpia neglecta Aptroot & Lücking sp. nov. Fig. 3C–F Species nova similis Coccocarpia domingense sed isidiis squamiformis differt. Typus: COSTA RICA. Cartago: Jicotea near Turrialba, Jul 1991, Lücking 1243a (CR – holotype; ABL, F, B, INB, USJ – isotypes). Thallus foliicolous, foliose, in round colonies of up to 30 mm diam. Lobes thin, flat, 0.2–0.4 mm wide, linear, isotomically branched and dissected, leaving rather large interspaces; lobe tips curved downward. Upper surface blue-green when moist, plumbeous to bluish grey when dry, with thin, longitudina, white striae. Lower surface pale, with numerous, white, unbranched, tapering, 0.3–0.5 mm long rhizines not forming a mat but protruding from under the lobe margins and easily visible from above. Lobes isidiate. Isidia marginal and laminal, numerous, flattened, slightly raised, semicircular to somewhat elongated, sometimes crenulate, 0.1–0.2 × 0.07–0.15 mm, in mature thalli covering most of the thallus interior. Apothecia abundant, originating on the lobe margins but soon wider than the individual lobes, up to 3 mm diam; disc orange brown, more or less flat with a thin, slightly raised, concolorous margin, becoming immarginate and convex when old, 445
Page 1 and 2: Lichenological Contributions in Hon
Page 3 and 4: Material and Methods Specimens were
Page 5 and 6: previously by Vainio and Zahlbruckn
Page 7 and 8: 10 Lobes rather thick (70-130 µm),
Page 9 and 10: Fig. 1. Habit of Coccocarpia specie
Page 11 and 12: 4708 (FH; as C. pellita var. smarag
Page 13 and 14: Fig. 3. Habit of Coccocarpia specie
Page 15: Coccocarpia aff. gallaicoi Lücking
Page 19 and 20: Brenes s.n. (FH; as C. cronia). Cer
Page 21 and 22: 0.2-0.4 mm long rhizines not formin
Page 23 and 24: Fig. 4. Morphotypes of Coccocarpia
Page 25 and 26: Fig. 6. Ecology of Coccocarpia spec
Page 27 and 28: There is no clear correlation betwe
Page 29: SANTESSON, R. (1952): Foliicolous l

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