|DATA ON NAME:|
|Name||Lentinula boryana (Berkeley & Montagne) Pegler|
|Protologue||Kavaka 3: 19|
|Name||Agaricus boryanus Berkeley & Montagne|
|Protologue||Ann. Sci. Nat., Bot., III 11: 235|
|Information on type||Holotype: trunk, Brazil, Bahia, Blanchet de Laurane, 24, 1839, herb: K|
|Literature||Pegler, D.N. 1983, Kew Bull., Add. Ser. 10|
|Current name||Lentinula boryana (Berkeley & Montagne) Pegler|
|Classification||Marasmiaceae, Agaricales, Agaricomycetes, Basidiomycota|
Agaricus boryanus Berkeley & Montagne. 1849. Ann. Sci. Nat., Bot. Ser. 3, 11: 235.
HOLOTYPE: Brazil, Bahia, Blanchet, no. 24, K [!1
= Collybia boryana (Berk. & Mont.) Saccardo. 1887. Syll. Fung. 5: 240.
= Gymnopus boryanus (Berk. & Mont.) Murrill. 1916. North Amer. Fl. 9: 370.
Armillaria boryana (Berk. & Mont.) Murrill. 1939. Bull. Torrey Bot. Club 66: 31.
= Lentinus boryanus (Berk. & Mont.) Singer. 1955. Sydowia 9: 379. Lentinula boryana (Berk. & Mont.) Pegler. 1975. Kavaka 3: 19.
Basidiomata three, pressed and glued on white cardboard; two basidiomata with lamellae upwards, the other showing surface details of the pileus; one basidiome with a complete stipe, one basidiome partially damaged by insects. Pileus 3-4 cm diam, circular in shape, probably convex when fresh, surface subvelutinous to subfibrillose (but epicutis apparently missing over some areas), apparently hygrophanous at disc, translucent outwards, light brown (5C6 to 5D6) at disc, darker yellowish brown (5E8) towards margin. Lamellae adnate, but seceding (probably during drying), forming a pseudo-collarium, close to crowded, now ▒ concolorous with pileus; margin entire or eroded; lamellulae in at least three tiers. Stipe now 1.5 x 0.2-0.3 cm, central; ▒ widened at apex and base, striate to sulcate, fibrillose near apex, becoming twisted downwards, in middle section bumpy to warty, dark brown (6F8). No evidence of annulus or velar remains.
Pileipellis a compact, repent layer of interwoven hyphae; hyphae 4-12 Ám diam, ▒ gelatinized, with clamp connections, hyaline singly, light brown in mass; walls thin. Pileus trama loosely interwoven; hyphae 4-16 Ám diam, with clamp connections, hyaline; walls 2-4 Ám thick. Lamellar trama parallel; hyphae 4-14 m diam, with clamp connections; walls up to 1.6 m thick. Hymenium composed of two elements: 1) basidia 12-16 x 3-4 run, clavate; sterigmata 1-4; and 2) basidioles equal in size to basidia, clavate to ampullaceous; numerous. Pleurocystidia not observed. Cheilocystidia (Fig. la) 14-21 x 4-10 Ám, clavate to broadly clavate, uncommon, often collapsed; apex obtuse. Stipe trama parallel; hyphae 2.5-7 Ám diam, with clamp connections, hyaline singly, straw color in mass; walls 1-2 Ám thick. Caulocystidia (Fig. 1b) 12-44 x 3-8 Ám, clavate to subventricose; apex obtuse, sub-mucronate or subampullaceous. Basidiospores (Fig. lc) 4.8-6.4 x 2.4- 3.2 Ám, (n = 20, x = 5.9 x 2.7 Ám, Q = 1.71-2.67, Qx = 2.24), ellipsoid, subovoid to subcylindrical, compressed laterally or partially collapsed, hyaline, inamyloid; wall smooth, thin.
Comment: Singer (1955) and Pegler (1975, 1983ä,b) overlooked the presence of cystidia (cheilo-, caulo-) in this type. Because of the preservation process of the type basidiomata, tissues became cemented, giving them a caramelized appearance. As a result, initial distinction of individual cells under light microscopy was very difficult. Only after prolonged re-hydration and squashing of the tissues could cheilocystidia, caulocystidia, and basidiospores be observed. Shape of cheilocystidia and caulocystidia in A. boryanus range from clavate to broadly clavate (i.e. subsphaeropedunculate) closely resembling the shape of those structures in modem collections of L. boryana (Guzmán et al, 1997; Mata et al, 2000; Petersen et al, 1998). Basidiospore dimensions and other microstructures of this type collection also coincide with those observed by us in fresh material. Singer (1955) reported gelatinization of the hymenophoral and pileus trama, which we have observed in some modem collections, but like Pegler (1983 a) we do not consider this phenomenon as taxonomically informative as spores and cystidia, because of its irregular manifestation. Our observations agree with those of previous authors on other characters such as disposition of lamellar trama, hyphal width, and arrangement and composition of the pileus epicutis.
Lentinula boryana is the most priorable name for any morphospecies of Lentinula in the New World exhibiting the above combination of micromorphological characters.
|Reference to description||Mata, J.L.; Petersen, R.H. 2001, Mycotaxon 79: 218|
|Comments or additions please to: J. Stalpers||Date: December 11, 2013|