HYMENOMYCETES 147 



Ulocolla resembles Tremella, but the germinating spores 

 are bilocular. Naematelia also resembles Tremella, but enclos- 

 ing a hard central nucleus. The genus Femsjonia presents 

 cup-shaped or pezizoid forms, with globose basidia and curved 

 spores. In Craterocolla the form is less cup-shaped, but there 

 are two kinds — one somewhat tremelliform, bearing basidia ; the 

 other more regular and rather truncate, bearing conidia. In 

 Sebacinia the whole Fungus is effused like a Gorticium, bearing 

 conidia at first, and afterwards reniform spores. The genus 

 Gyrocephalus is analogous to Guepinia ; the species are erect in 

 habit and spathulate, with basidia of the Tremella kind and 

 pear-shaped spores. The genus Tremellodon, with the form 

 of Hydnum, but the fruit of Tremella, properly belongs here. 



The subfamily Dacryomyceteae includes the lowest Tremel- 

 loid forms, in which the basidia are clavate, or nearly of the 

 ordinary Hymenomycetal type, forked above, and each apex 

 bearing a single spicule. The genus Dacryomycetes includes 

 normally small pulvinate species, the spores -of which are trans- 

 versely or muriformly divided when mature, and the conidia 

 (when present) growing in chains. The genera Arrhytidia and 

 Ceracea are North American, and of minor import. G-uepinia 

 consists mostly of irregularly cup-shaped or spathulate species, 

 with a more or less developed, and often woolly, stem. The 

 hymenium is discoid or one-sided, and the basidia linear and 

 bisporous. The genus Dacryomitra has the fructification of 

 Dacryomyces, but the form and habit are those of Typhula or 

 Mitrula, being minute and club-shaped. Collyria is a Worth 

 American genus, of a single species, resembling a large Dacryo- 

 mitra, with an inflated capitulum. Two or three other little- 

 known genera have been added provisionally to this subfamily, 

 but their position has not yet been satisfactorily determined. 



Thus closes our survey of the groups, and genera, of the 

 Hymenomyceteae,'m which the most distinctive features have 

 been indicated ; but there are many cross relationships and 

 analogies which could scarcely be alluded to. It has been 

 pertinently observed that no linear arrangement can possibly 

 illustrate completely the relationship of the families and genera 

 which approach each other' at various points, but it is useful 

 as a guide to the classification of corresponding forms. 



