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

Coccocarpia dissecta Swinsc. & Krog Fig. 1G
Notes: Previously known from the Paleotropics only (SWINSCOW & KROG 1976;
ARVIDSSON 1983; DIN et al. 1998), but recently also reported from Paraguay (LLARENS
2002). Several specimens were observed in the Costa Rican material which match the
paleotropical populations perfectly. The almost linear, richly dissected lobes, with the black
rhizines visible laterally along the lobe margins, distinguish this taxon from Coccocarpia
palmicola. Coccocarpia adnata is identical in thallus morphology but lacks isidia and can
be considered the primary species of C. dissecta.
A species closely related to Coccocarpia dissecta, C. duidensis, was described from
Venezuela by MARCANO et al. (1995). This taxon seems to be rather distinctive, differing
from C. dissecta not only by its shorter ascospores but also by its chemistry, including
anthraquinones and a xanthone.
Selected specimens examined: COSTA RICA. Alajuela: Altamera, s.dat., Holm & Iltis 1529 (FH; as
Coccocarpia cronia). Cartago: Santiago, Oct 1929, Dodge 4638 (FH; as C. cronia var. isidiosa).
Guanacaste: Barra Honda National Park, Mar 2004, Will-Wolf 12834f (INB-4031112, WIS). Between Río
Las Cañas and Río San José, Feb 1930, Dodge & Thomas 6719 (FH; as C. cronia var. isidiosa). Hacienda
Santamaría, Jan 1930, Dodge & Thomas 7007 (FH; as C. cronia var. isidiosa). Palo Verde National Park,
Mar 2003, Buck 43929 (INB, NY). Heredia: La Selva Protection Zone, Jun 2002, Lücking 15026a (INB-
3932456), 15026b (F). Limón: Between Río Cimarrones and Waldeck Farm and lake on Monte Verde Farm,
Apr 1930, Dodge s.n. (FH; as C. isidiophylla var. granulosa). Gandoca-Manzanillo Wildlife Refuge, Mar
2004, Lücking 17086h (F). Puntarenas: Along seashore between Río Sandoval and Río Tigre, May 1930,
Dodge 8057 (FH; as C. isidiophylla). Flood-plain of Río Sándalo, peninsula of Osa, Aug 1936, Dodge &
Goerger 10048 (FH; as C. cronia var. isidiophylla). Las Tablas Protection Zone, Jun 2002, Lücking 15593b
(F, INB-3981686). San José: N of Turrúcares, Mar 1930, Dodge & Thomas 8056 (FH; as C. isidiophylla var.
granulosa).
Coccocarpia domingensis Vain. Fig. 3A–B
Notes: A very common foliicolous species, characterized by linear lobes and marginal,
cylindrical to slightly flattened isidia (SANTESSON 1952; ARVIDSSON 1983). Careful study
of the available material showed that another species was hidden within this taxon,
distinguished by its squamiform isidia; it is described below as Coccocarpia neglecta.
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