382 SUMMARY OF CURRENT RESEARCHES RELATING TO 
Development of the Sporanges in the Saprolegpiiaceae.* * * § — Herr W. 
Bothert now publishes in German his paper on this subject previously 
printed in Polish, with an addition relating specially to the more recent 
papers of Berthold t and Hartog.J 
With regard to the observations of the latter, he points out that the 
species described by him as Achlya polyandra must be a different, hitherto 
undescribed species, since it has vibratile cilia, while A. polyandra is 
destitute of them. The two different structures of spore occur in the 
same genus. He also adduces reasons for dissenting from Hartog’s 
view that the escape of the zoospores is due to the chemical stimulus of 
the oxygen in the medium acting on the motile zoospores. 
Thanmidium mucoroides.§ — Herr H. Zukal describes this new 
species grown on alligator’s excrement, which forms an interesting 
connecting link between Thamnidium and JIucor. It not unfrequently 
happens that the contents of the two conjugating cells fail to unite 
owing to the dividing wall not becoming absorbed. In that case two 
azygospores are formed. 
Bargellinia, a new Genus of Ascomycetes.fl — Prof. A. Borzi de- 
scribes, under this name, a fungus found in an excoriation of the human 
ear. Its mycele consists of exceedingly delicate branched and septa ted 
hyphse, some of the branches of which swell at the apex into club-shaped 
asci, each containing usually a single ascospore, less often two. The 
author places Bargellinia among the Exoascacete, in the neighbourhood 
of Endomyces , Eremascus, and Eremothecium, but most nearly allied to 
Oleina and Podocapsa. 
Semi-lichens.*: — Under the name “ Halbflechten,” Herr H. Zukal 
describes a number of organisms coming under one or the other of the 
following denominations: — Forms ordinarily occurring as lichens with 
their proper algae, but in which the alga is sometimes wanting, and 
which therefore carry on a saprophytic existence ; fungi which as a rule 
exist as saprophytes or parasites, but occasionally combine with an 
alga into a lichen-thallus ; forms which generally occur united to par- 
ticular algae, but in their general behaviour resemble a parasite rather 
than a lichen-forming fungus. The following examples are given : — 
Paruphadria Heimerlii g. et sp. n., on the stem and leaves of 
Jungermannia quinquedentata. The following is the diagnosis of the 
new genus: — Fructification blackish or dark brown, horny when dry, 
when moist cartilaginous and mucilaginous, inclosed when young by a 
flat cover perforated in the middle, which afterwards assumes the form 
of a ring or collar. 
Gloeopeziza Rehmii g. et sp. n., epiphytic on Jungermannia tricho- 
phylla. The genus is characterized by an almost microscopic fertile 
disc, bounded on the side by an envelope composed of modified para- 
* Beitr. z. Biol. d. Pflanzen (Cohn), v. (1890) pp. 291-349. Cf. this Journal, 
1888, p. 271. 
t Cf this Journal, 1887, p. 420. J Cf. this Journal, 1890, p. 807. 
§ Abhandl. K. K. Zool.-Bot. Gesell. Wien, xl. (1890) pp. 587-90 (1 pi.). 
Malpighia, ii. 1888 (1890) pp. 469-76. 
* Flora, lxxiv. (1891) pp. 92-107 (1 pi.) ; and SB. K. K. Zool.-Bot. Gesell. Wien, 
xl. (1890) p. 53. 
