ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
93 
brittle, with thick coat,J sessile on the surface of the substratum ; asci 
broad ; ascospores eight, large, divided, yellow-brown. Stachybotrys is a 
conidial form of this genus. 
Lecythium (Hypocreaceje). Without a stroma ; peritheces solitary, 
soft, entirely superficial, flask-shaped, light blue-green, with long neck 
and distinct ostiole ; asci linear, mixed with parapliyses ; ascospores 
eight, fusiform, four-celled, colourless, with an appendage at both ends. 
Cyanocephalium (Pyrenomycetes). Without a stroma; peritheces 
solitary, superficial, ovate or spherical, yellowish white, smooth, very 
hard, with a distinct ostiole at the apex ; asci flask-shaped ; ascospores 
numerous, very small, colourless, two-celled. 
A new family of Pyrenomycetes is also established, the Thelocarpe^j, 
with the following diagnosis : — Without a stroma ; peritheces superficial, 
solitary or in groups, with a distinct ostiole at the apex ; asci ventricose, 
flask-shaped ; ascospores numerous, very small, two-celled, hyaline. It 
comprises the two genera Thelocarpon and Cyanocephalium , and is inter- 
mediate between the Hypocreaceae and the Sordarieae. 
Parasitic Fungi. — M. A. Prunet * * * § describes the rhizoctone which 
attacks the roots of the lucerne, and which is known as Rhizoctonia 
MecLicaginis. It developes within the tissues of the host sclerotes of 
two kinds, larger and smaller, and produces also an ascosporous form 
identical with Byssothecium circinans , Trematosphsera circinans, and 
Leptosphsera circinans. 
Mr. L. H. Pammel f enumerates the parasitic fungi which attack 
the beet crop, including Cystopus Bliti, Cercospora Betse , and Bhizoctonia 
Betse. 
Herr F. Ludwig J finds on beech-stumps a mucilaginous flux which 
he determines to be an oidium-form of Ascobolus Costantini. 
Sig. F. Cavara § has established the parasitic character of Gibellina 
cerealis on cereal crops. He also affirms the identity of Septoria grami - 
nuni and S. Tritici as forms of the same species. Phoma lophiostomoides 
is not a true parasite. In the haulms of cereals he finds a now hypho- 
mycetous fungus, Acremoniella occulta. On the leaves of barley he has 
also detected a new fungus Ophiocladium Eordei , the type of a new 
genus of Mucedineae with the following diagnosis: — Hyphae fertiles 
fasciculatae, anguineo-tortuosae ; conidia acrogena, hyalina, continua. It 
bears a close resemblance to Oidiurn anguineum. 
M. E. Prillieux || finds that Monilia Linliartiana , parasitic on the 
quince, developes under cultivation an apothecial form very similar to 
the Sclerotinia parasitic on Vaccinium. He proposes therefore to call 
the fungus Peziza Linhartiana. 
M. 0. Schilbersky % finds, in the short-stamened flowers of the Con- 
volvulus arvensis , a quantity of fungus hyphae which produce yeast-like 
* Comptes Rendu?, cxvii. (1893) pp. 252-5. 
t Bull. Iowa Agric. Cult. Exp. Stat., No. 15, 16 pp. and 1 pi. See Bot. Cen- 
tralbl., lv. (1893) p. 183. 
X Forstl.-naturw. Zeitschr., 1893, 3 pp. See Bot. Centralbl., 1893, Beih., p. 398. 
§ Zeitschr. f. Pflanzenkrankheiten, iii. (1893) 11 pp. and 1 pi. 
0 Bull. Soc. Bot. France, xl. (1893) pp. 219-20. 
f Jub. Gedenkb. K. Ungar. Naturw. Gesell., 1892, pp. 623-34. See Bot. Cen- 
tralbl., 1893, Beih., p. 447. 
