Search on : Taxa descriptions

 


 
 Add this item to the list  Poria linearis Murr. Fig. 119
   
Literature:
 
Page number:130 
Description type:Non-original description 
Description:Poria linearis Murr. Fig. 119
Mycologia 12:303. 1920. (NY; BPI; FH; K; SYRF).
Annual, becoming widely effused, up to 1.5 mm thick, adnate, mild; margin white, appressed-pubescent or matted, rather wide; pore surface white to cream, dull, the tubes corky, 1-2 mm long or elongated to 10 mm or more on vertical substrata, pores rounded to subangular, 2-3 per mm, edge thick to thin, entire; context cream to pale wood-brown, soft-corky, thin, continuing without change into the trama.
Tissue not changing color in KOH; hyphal system trimitic, the context of scattered, frequently branched, thin-walled, occasionally nodose-septate generative hyphae, variably 2-5 µm in diameter, of rather rare skeletal hyphae which are rarely branched, thick-walled, nonseptate, 1,5-3 µm; in diameter, and of abundant binding hyphae which are much branched, nonseptate, 0.5-2.5 µm in diameter; trama continuous with the context and the hyphae similiar; hymenium about 14-16 µm thick; hyphal pegs uncertain, if present very scattered; cystidia none; basidia clavate, 13-16 x 7-8 µm; spores hyaline, smooth, IKI -, oblong or sometimes slightly bent, apiculate, 7-11 x 3-4 µm.
On angiosperms in Fla., Panama and Venezuela; associated with a white rot. Poria leucoplaca (Berk.) Cooke, from N. Zealand, is very similar but differs in having pores 2-4 per mm and spores, according to Cunningham, (1947, p. 25), elliptical and 10-14 x 4-6 µm,. According to Cunningham P. macrospora Rodw. & Clel. is the same as P. leucoplaca; the type of P. macrospora has not been seen.
Murrill reported the spores on the type of P. linearis as "pip-shaped, smooth, hyaline, 5-7 x 3-4 µm". Spores have not been found on the type material; the hymenial characters enumerated in the description above were obtained from No. 755 in Sydow, Fungi Exot. Exsic., from Venezuela, issued as Poria leucoplaca.
 
Taxon name: