ZOOLOGY AND BOTANY, MIOBOSCOPY, ETO. 779 



Protobasidiomycetes, and the angiocarpous and hemi-angiocarpous 

 Autobasidiomycetes. Tbe Tremellini in tbe ordinary sense of the 

 term include the author's Auriculariese, Tremellinefe, and the greater 

 part of the Dacryomycetes. The angiocarpous Autobasidiomycetes 

 correspond to the Gasteromycetes. 



The Pilacrefe consist of the single genus Pilacre. It possesses a 

 peridium composed of the ultimate ramifications of the hyphae, while 

 the lower parts of the same hyphae give birth to the basidia. The 

 germinating spore developes into a mycelium, a portion of which grows 

 beneath the surface of the nutrient fluid, while the aerial portion gives 

 birth to conidia. Pilacre may be regarded as a Gasteromycete with its 

 basidia septated transversely. 



The fructification of the Auricularieae consists of irregular masses 

 enveloped in abundant mucilage ; it is gymnocarpous, the basidia being 

 formed on the surface ; each of the four superposed cells of which they 

 are composed puts out a long broad sterigma which traverses the whole of 

 the mucilaginous envelope, and terminates in a large reniform spore. 

 Brefeld divides it into two genera : — Auricularia, with which Hirneola 

 is united, and a new genus Tachaphantium, composed of a single species, 

 which forms small warts on the bark of branches of the lime. 



The Tremellineee have a gymnocarpous fructification, and the basidia 

 are divided longitudinally by two septa at right angles to one another. 

 It comprises the genera Exiclia, Ulocolla, Craterocolla, Sebacina, Tremella, 

 and GyrocepJialus. The new genus Ulocolla (formed of Tremella saccha- 

 rina and foliacea') is distinguished by the mode of germination of the 

 spores, which resembles that of Exidia, the spore dividing into two cells, 

 each of which puts out a short filament ending in a group of conidia 

 having the form of straight rods. Craterocolla is also a new genus, 

 formed from the single species Tremella Cerasi, distinguished by conidi- 

 ferous filaments differing greatly in appearance from those which give 

 birth to the basidia. GyrocepJialus is also composed of a single species, 

 Guepinia helvelloides Tul. 



Of the Autobasidiomycetes the only family treated of in this section 

 of the work is the Dacryomycetes, composed of the genera Dacryomyces, 

 Guepinia, and Dacryomitra, usually placed under Clavariese, sometimes 

 under Tremellini. The Dacryomycetes are distinguished by their 

 basidia having the form of an elongated bifurcate club, bearing at its 

 extremity two long arms or sterigmata, which narrow gradually up- 

 wards, each ending in a single large spore. The characters of the four 

 genera are given by the author in detail. 



New Tubercularia.* — M. N. Patouillard, while examining some 

 fungi sent from the Jura, noticed on the stems and leaves of some 

 grasses small white spots, which presented a remarkable structure. 

 These little tubercles were round, from • 5 to 2 mm. in diameter, and 

 sessile, hyaline, and gelatinous. Under the Microscope these tubercles 

 were seen to be composed of colourless and branching filaments; a 

 slight swelling can be observed at the end of these, and this forms an. 

 ovoid mass, which is the commencement of the spore. This spore is 

 separated by a septum, and below this the filament emits a lateral 

 branch which continues to elongate. The author gives a diagnosis of 

 this plant, to which he has given the name of Tubercularia cJisetospora. 



* Soc. Bot. et Mycol. de France, Session Cryptogamique, 1887 (1888) pp. 29-30. 



