Phaeophlebiopsis caribbeana
Phaeophlebiopsis caribbeana Floudas & Hibbett 2015, in Floudas & Hibbett, Fungal Biology, 119(8), 679-719 (2015).
Etymology: From the Caribbean region, where the type was collected
Diagnosis: Fruitbody resupinate, smooth, dull, less than one mm thick, adnate, very hard, extensively cracking, gray (10 YR 6/ 1), but in old samples the colour may fade to very pale brown (10 YR 8/2). Subiculum very thin, brown. Margin abrupt. Hyphal system monomitic, hyphae thin-to thick-walled, subicular hyphae agglutinated, brown, very difficult to separate, almost perpendicular, clamps absent or rarely seen. Cystidia abundant, metuloids, some with brown walls, slightly projecting above the hymenium, or embedded in the fruitbody, about ½ of the cystidium covered with crystals, thickening in the middle, the top subulate or less frequently blunt, 22–38 × 5–10 µm. Basidia with four sterigmata, 14–20 × 4 µm, without a basal clamp. Basidiospores difficult to find, ovoid to ellipsoid, hyaline, thin-walled, Melzer (–), 3.5–4.8 × 2–3 µm.
Index Fungorum Number: IF811931
Figure 1. Maximum likelihood phylogeny of the concatenated 5.8s, nLSU, RPB1, and RPB2 datasets. Bootstrap values ≥75 (left values) and posterior probabilities ≥ 0.95 from the Bayesian analysis (right values) are shown for each node. Areas shaded in grey (1–9) represent the nine lineages where phanerochaetoid fungi are found in the phlebioid clade. Clades labeled AeD represent the Phanerochaete sensu stricto, Hyphodermella, Phlebiopsis, and Bjerkandera clades, respectively. The area shaded in light green indicates Phlebia sensu stricto. Names in red font represent new combinations or newly described taxa. Names in quotation marks represent provisional names or uncertain identifications. Question marks indicate taxa with unknown clamp connections distribution. Climacodon septentrionalis has been labeled with (+) because of its variable clamp connections distribution. The placement of taxa in subgenera is sensu Burdsall (1985).
Figure 1 (continued)
Figure 2. Maximum likelihood analysis of ITS sequences from the Phlebiopsis clade. Bootstrap values ≥70 are shown. Names in red represent newly described taxa or new combinations. An ITS sequence of P. laevis (FD-206) was used as outgroup.
Figure 3. Cystidia (A–H), basidiospore (G), and fruitbodies (O–P) of Phaeophlebiopsis caribbeana. Basidiospores (I–L) and cystidia(Q–T) of Phaeophlebiopsis sp. (P. cf. hiulca 2). Basidiospores (M–N) and cystidia (U–W) from the holotype of Peniophora hiulca (W. A. Murrill & E. L. Murrill, 71). ((A-C, F, H, O): holotype FD-442; (D, E, G, P): HHB-6990; (I-K, Q, R): FP-100589; (L, S, T): HHB-9991). Scale bars: for cystidia =10 µm, for basidiospores = 5 µm.
References:
Burdsall Jr HH, (1985). A contribution to the taxonomy of the genus Phanerochaete (Corticiaceae, Aphyllophorales). Mycologia Memoir 10, 1–165.
Floudas, D., & Hibbett, D. S. (2015). Revisiting the taxonomy of Phanerochaete (Polyporales, Basidiomycota) using a four gene dataset and extensive ITS sampling. Fungal Biology, 119(8), 679-719.
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Licrostroma
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