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Page number:618 
Remarks (internal):Meripilus lentifrondosa is known only from the type and may be diagnosed by the shape of basidiospores, finely tomentose pilear surface, pore size (5-7 per mm), and apparent lack of darkening when bruised. Murrill (1912) apparently saw no resemblance of M. lentifrondosa to either M. giganteus or M. sumstinei, but likened it instead to Grifola frondosa (Dicks. : Fr.) S. F. Gray. In his notes on the type specimen he stated: "Much too woody for known species," and "Large and many times imbricate. Old, but apparently different from frondosa. Pileoli lie very close together, white and tough within, tubes brown when seen. Surface isabelline with a roseate tinge and somewhat hairy."
Ryvarden (1985) has placed M. lentifrondosa in synonymy with M. giganteus, and his notes with the type of M. lentifrondosa state that the spores are ellipsoid.
 
Description type:Non-original description 
Description:Meripilus lentifrondosa (Murr.) M. Larsen & Lombard, comb. nov.
Grifola lentifrondosa Murr., Bull. New York Bot. Gard. 8: 144. 1912.
Basidiocarp annual, stipitate, 20 cm across and 15 cm high, woody, multipileate to imbricate, individual pilei 3-5 cm wide and up to 8 mm thick, narrowing toward the base, laterally attached to buried wood by a thick tuberous base approximately 7 cm long and 4 cm diam, upper surface dull pale brown to blackish brown, finely tomentose, pore surface pale brown to fuscous, apparently not bruising when handled or injured, pores 5-7 per mm, pore mouths irregular to angular, entire, becoming decurrent on stem and then somewhat lacerate; trama and pore layer sharply delimited from the context, brittle-cartilaginous; context tan to dull brown, hard, fibrous, up to 4 mm thick in individual pilei, no pigment change in KOH or IKI. Associated with a white rot.
Hyphal system monomitic, clamp connections absent throughout. Context hyphae of three kinds: principal context hyphae parallel in arrangement, 4-6 µm diam, septate, hyaline, thin- to thick-walled; some growing laterally, 2-4 µm diam, septate, hyaline, branching frequently but not presenting the appearance of "binding-type" hyphae as in M. giganteus; gloeoplerous hyphae, 4-10 µm diam, thin-walled, staining strongly in phloxine solution (hyaline in KOH and H20), septate, infrequently branched, arranged parallel to principal context hyphae; hyphae next to the tube layer sometimes forming a distinct and recognizable layer more dense and refractive than the context, 1.5-2 µm diam, short-celled, septate, hyaline, gelatinized and not easily separating; tramal hyphae of two kinds: principal tramal hyphae 1.5-2 µm diam, hyaline, septate, thin-walled, parallel in arrangement; gloeoplerous hyphae 2-4 µm diam, staining strongly in phloxine solution (hyaline in KOH and H20), septate, thin-walled, branching infrequently; basidia not seen; basidiospores 5(-5.5) x (3.5-)4 µm, short-obovate and strongly attenuated toward a prominent apiculum, hyaline, smooth, acyanophilous, inamyloid; cystidioles not seen.
HOLOTYPE-Mexico, Jalapa, on the roots of an oak stump on an exposed railway embankment, 12-20.XII.09, W. A. and E. L. Murrill No. 56 (NY).

 
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