Fulvifomes tubogeneratus F.C. Huang & H.F. Zheng, sp. nov. 2021
MycoBank MB835791
Holotype: China, Guangxi Autonomous Region, Chongzuo, Longzhou County, Nonggang Nature Reserve, on dead trunks of angiosperm tree, November 19 2018, GXU2468 (Holotype in GXU).
Morphological description
Basidiocarps perennial, sessile, broadly attached on dead drunk, frequently new fruit bodies generated on surface of tubes, occa[1]sionally on pileal surface, imbricate. Pileus semi[1]circular to subcircular, applanate, up to 10.2 X 7.4 and 4.1 cm thick, pileus surface distinctly concen[1]trically sulcate, velutinate, brussels brown to medal bronze, margin entire, acute or dull, cadmium yel[1]low to raw sienna, and claret brown when age. Context wood hard, yellow ocher, buckthorn brown to cinnamon brown, duplex, separated by a black line, the upper context up to 0.6 cm, lower context up to 3.1 cm, black lines also frequently distributing in context, tubes, and between context and tube with age. Pore surface shining, rood’s brown to burnt umber, pores not appearing on too young fruit body, but gradually increasing with mature, and some places of surface no pores differentiation and development even fruit body becoming old, and remaining with velutinate, these places capucine yellow, orange to cadmium yellow when young, brussels brown when old, ster[1]ile margin with the same color, up to 2.2 cm (no pores differentiation area) even old, pores angular or circular, 7–8 per mm; dissepiments most thin, and parts thick, entire, or some lacerate on mar[1]gin. Tubes concolorous with pore surface, woody hard, up to 0.8 cm long, not stratified when young, but indistinct stratified with age, rood’s brown to chocolate.
Habitat: Growing on dead trunks of angiosperm trees.
Distribution: China, Guangxi, Chongzuo, Nonggang Nature Reserve, on dead angiosperm trunks, November 20 2018, GXU2478.
GenBank Accession: ITS MT580805; nLSU MT580800.
Notes: Differs from other species by basidiocarps perennial, sessile, imbricate, new fruit bodies fre[1]quently generated from surface of tubes, context duplex, pores angular or circular, 7–8 per mm. Hyphal system dimitic, hyphoid setae present, basi[1]diospores ovoid to subglobose, 5.72 X 5.00 mm on average.
Reference: Zheng, H. F. , Huang, F. C. , Liu, B. , Shao, Y. Y. , & Qin, P. S. . Fulvifomes nonggangensis and f. tubogeneratus (hymenochaetales, basidiomycota): two new species from southern china based on morphological and molecular evidences.
Microscopic structures of Fulvifomes tubogeneratus. Scales bar: 10 lm. A: basidia; B: basidioles; C, D: 1, basidia, 2, basidioles; E: basidiospores; F: 1, tramal generative hyphae, 2, tramal skeletal hyphae; G: generative hyphae from upper con[1]text (arrow pointed); H: skeletal hyphae from upper context (arrow pointed); I: generative hyphae from lower context; J: skel[1]etal hyphae from lower context (arrow pointed); K, L: hyphoid setae swollen at apex from tramal.
