Lentinus hepatotrichus Berk. 1859
Details
Details
Nomenclature
Classification
Descriptions
Lentinus hepatotrichus Berk. 1859
Lentinus hepatotrichus Berk. 1859
Lentinus hepatotrichus Berk. 1859
Spores 3.5 -4.5 x 2.5-3 (4.1 x 2.7) µm, Q = 1.5, broadly ellipsoid, strongly amyloid and echinulate. Basidia 15 x 5 µm, broadly clavate, 4-spored. Remains of thin-walled, fusiform, subulate leptocystidia 20 x 4 µm on margin and face of lamellae. Pileipellis of repent dark yellowish brown (in KOH), more or less parallel, encrusted hyphae up to 6 µm diam., with epimembranal pigment in a network or deposited in patches. The pileal tomentum on the attachment region consists of a tangled mass of hyphae 3-4µm diam., with one or two septa and walls moderately thickened (c.1 µm thick). The upstanding bristly hairs in the middle region are up to 1 mm long, and are of similar but darker, agglutinated hyphae. Beneath the pileipellis is a region of closely packed, parallel, hyaline hyphae 5 - 6 µm diam., mixed with many oleiferous hyphae of similar diameter. Oleiferous hyphae emerge to the surface and their tips become thick-walled pseudocystidia, variable in size (20-60 x 10-20 µm) and shape (irregularly globose, clavate, ellipsoid, lageniform), without contents. Context of tightly interwoven, contorted hyphae 6 - mm diam., either thin-walled or thick-walled with little or no lumen, some amyloid in Melzer's reagent. Trama of thinwalled hyphae 3 - 5 µm diam., and contorted, thickwalled hyphae, some with blue patches on the walls in Melzer's reagent. Oleiferous hyphae mostly in the outer region of trama, adjacent to the narrow subhymenium, their ends protruding as cylindrical, thin-walled pseudocystidia 25 - 30 x 5-6 µm, on the lamellar face.
=Acanthocystis hepatotrichus (hepatotricha) (Berk.) Sing., Ann. mycol. 41: 148, 1943 [invalid combination, basionym not cited]. Acanthocystis was incorporated in Hohenbuehelia, with specific reference to L. hepatotrichus, by Singer, Lilloa 22: 255, 1949 (1951), but the transfer to Hohenbuehelia was not made because "the characters had not been checked on the type" (Singer 1949).
(a) Lentinus hepatotrichus Berk. In Hook.f., F1. Tasm. 2: 249, 1860 Colenso, Trans. N.Z. Inst. 23: 393, 1890.
The holotype material of L. hepatotrichus Berk., on stringy-bark gum-tree, Ovens rivulet, Tasmania, W. Archer 712, 1855, (holotype, K), was examined by Miller & Stewart ( 1971 ) who found the spores to be 3.5-4.5 x 3.0-3.8 µm, within the range for L. ursinus, and also described other features characteristic of L. ursinus but, because no basidiomata were complete enough to show details of the cuticle, they preferred to wait until fresh material was found before placing the name in synonymy. They made no comment on the identity of the Gentilli collection with larger spores, from Western Australia, named as Lentinellus hepatotrichus by Reid (1956), nor on Colenso's record of Lentinus hepatotrichus for New Zealand (Colenso 1890), based on a collection made near Dannevirke (Colenso b969, K).
This description fits that of Lentinellus ursinus (Fr.) Kuhner (Bresadola 1929; Pilat 1946, as Lentinus vulpinus (J.Sowerby) Fr.; Miller & Stewart 1971; Moser 1983; Breitenbach & Kranzlin 1991), confirming its presence in Australia.
Lentinus hepatotrichus was first recorded for New Zealand by Colenso, Trans. N.Z. Inst. 29: 393, 1890, based on the collection Colenso b969 sent to Kew and identified by Berkeley. A duplicate collection of Colenso's material from Herb PDD and other more recent collections listed below, possess all the characters described for the type of Lentinus hepatotrichus from Australia described above, and support its synonymy with L. ursinus in New Zealand. It will be shown later that Lentinellus hepatotrichus sensu Reid is a different species, L. pulvinulus (Berk.) Pegler, previously known only from Australia and confirmed there by Pegler (1965, 1983) and Miller & Stewart (1971) as a good species, close to L. flabelliformis (Bolton: Fr.) S.Ito.
