The Genera Trechispora and Galzinia (Thelephoraceae)

Abstract

The genus Trechispora is made up of resupinate hymenomycetes possessing urniform basidia. That peculiar type of basidial development and structure best referred to as the urnigera type was first made the basis of taxonomic segregation in 1911, when Bourdot & Galzin (Bull. Soc. Myc. Fr. 27: 243) described the Groupe within the genus Corticium, and assigned to it the species C. octosporum, C. coronilla, C. diademiferum, and Odontia Brinkmanni Bonorden (Hedwigia 15: 76. 1876) and Hohnel & Litschauer (Ann. Myc. 4: 291. 1906) had already described species with the many-spored, coronate basidia and the compact, proliferative basidial clusters characteristic of the group in question, but had failed to mention the distinguishing developmental stages and final form of the basidia. Bourdot & Galzin subsequently recognized Urnigera sections in other genera of the lower hymenomycetes; that they did not combine these into a single genus is probably to be explained by their declared practice (Hym. Fr. [i]. [1928]) of following the classification of Patouillard. In 1934 I discussed the desirability of bringing together all the urnigera fungi (Univ. Iowa St. N. H. 16: 176), and in 1935, after correspondence with Dr. M. A. Donk and at his suggestion, adopted the name Sistotrema for both resupinate and pileate members of the group (Univ. Iowa St. Nat. Hist. 17: 19). It now appears more convenient to allow a separation between the pileate genus Sistotrema and the resupinate species; for the latter the name Trechispora, apparently the earliest available, has been adopted. Although in 1935 I possessed a considerable quantity of material of these fungi, the distinctness of certain of the accepted species remained in some doubt, and others I could