ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
489 
Puccinia apparently identical with P. heteranthci , parasitic on Oenothera 
ovata and on a number of other species of Onagraceae in California. 
Herr P. Magnus * * * § has found the parasitic fungus Synchytrium papil- 
latum on material from Teneriffe. The form of the fungus from this 
locality presents the peculiarity that the pear-shaped epidermal cells of 
the host-plant, which are attacked by the resting sporanges of the fungus, 
become detached, and fall to the ground together with the parasite. The 
zoospores are developed within the resting sporange while still enclosed 
within the cell as it lies on the ground. 
Herr H. Zukal j finds two species of Chytridiaeese parasitic on Toly- 
pothrix lanata , viz. Fhizophlyctis Tolypothrichis, and a Myzocytium ; the 
latter forms within the host abundant siphon-like mycelial threads. The 
systematic position of the former genus is somewhat doubtful. 
M. E. Prillieux J describes the ravages effected on the artichoke by 
the attacks of Famularia Cynarse. 
Dr. C. Brick § describes the structure and development of the destruc- 
tive parasite Nectria cinndbarina. It produces three different kinds of 
spore — ascospores, microspores, and multicellular sickle-shaped mega- 
spores, corresponding respectively to the Nectria , the Tubercularia , and 
rthe Fusisporium forms. Propagation takes place entirely through the 
agency of one or other of these different kinds of spore. 
Herr 0. Wehmer |] confirms Dr. Brick’s account in all essential 
particulars. 
Mr. S. A. Beach describes the phenomena of anthracnose of the 
bean produced by Colletotrichum Lindemuthianum ; of a disease of the 
bean due to bacteria ; and of the rust caused by Uromyces Phaseoli. 
M. G. Neumann** * * §§ describes the ravages caused in wheat-crops by a 
hitherto unknown disease produced by Mystrosporium abrodens , a new 
species belonging to the family Dematieee of Hyphomycetes. 
Herr P. Magnus || advances arguments in favour of his conclusion 
that the secidia on Convallarici , Polygonatum , Maiantliemum , and Paris, 
all belong to the same species of Puccinia found on PJialaris arundinacea. 
Mr. L. H. Pamrnel +% describes the effects of Cladosporium carpophi- 
lum in producing the disease known as scab on the plum and cherry ; 
and of Sphserotheca Mali in causing the powdery mildew of the apple. 
Uredinese and their Hosts.§§ — M. G. Poirault gives a supplementary 
list of phanerogamic plants, arranged in their natural orders, on which 
species of Uredinese have been observed to be parasitic. 
* Ber. Deutsch. Bot. Gesell., xi. (1893) pp. 538-42 (1 pi.). 
t Oesterr. Bot. Zeitschr., xliii. (1893) pp. 310-14 (1 fig.). 
t Bull. Soc. Mycol. France, viii. (1892) pp. 144-6. See Bot. Centralbl., 1894, 
T3eih., p. 50. 
§ Jahrb. Hamburg. Wiss. Arb., x. (1893) 14 pp. See Bot. Centralbl., lvii. 
<1894) p. 270. 
|| Zeitschr. f. Pflanzenkrankheiten, 1894, p. 74 (1 pi.). 
Bot. Deptmt. Agric. Coll. Ames, 1892, pp. 307-33 (9 figs.). See Bot. Cen- 
tralbl., lvii. (1894) p. 311. 
** Soc. Biol. Toulouse, Dec. 24, 1892, 3 pp. See Bot. Centralbl., lvii. (1894) 
p. 313. 
ft Hedwigia, xxxiii. (1894) pp. 77-83. Cf. this Journal, ante , p. 238. 
XX Bull. Iowa Agric. Coll. Exp. Stat., 1893, pp. 918-24 (2 figs.). 
§§ Journ.de Bot. (Morot), vii. (1893) pp. 391-2 ; viii. (1894) pp. 16-8, 106-8, 148, 
.163-4, 173-7. Cf. this Journal, 1891, p. 231. 
