7-3
ACROSPORIÜM m o n il io id e s .
Necklace Acrospormm.
C la s s a n d O h d e i i CRYPTOGAMIA FUNGI, i m » .— N a t . O r d . BYSSOIDEJE,
Gre«.—MUCEDINES, Link.
GENERIC CHARACTER.
Filamenta Simplicia, caespitosa, moniliformia, articulis ( sporulis ? ) secedentibus.
Filaments simple, tufted, moniliform, the joints (sporules?) separating and
deciduous.
S PEC IF IC c h a r a c t e r .
A crosporium monilioides; candidum cwspitoso-ejfusum, in foliis graminum pa-
rasitkum.
A. white, in spreading tufts, on the leaves of grasses.
A crosporium monilioides, Nees, Syst. 2. p. 14. t. 4. f. 49 Pers. Mycol.
Furop. V. 1. p. 23.—Gray’s Nat. Arr. v. 1. p. 552 Grev. FI. Fdin. ined.
Monilia hyalina. Fries, Obs. Mycol. 1. p. 210. t. 3. f. L f d e Persoon.
Botrytis simplex, /¡/3, monilis, Albert et Sfhni. Conspect. Fung. p. 363.
H a b . On the living leaves and culms of various grasses, especially Holcus
mollis, in spring and summer, frequent.
The whole plant or aggregation of plants, form little effused tufts of 1-2
eighths of an inch long, of an oblong or elliptical form. Each of these
tufts is composed of a number of simple pellucid f laments, jointed like
a necklace, and attenuated towards the base. No one has been able to
detect any distinct sporules, but the uppermost joints seem to supply their
place, as they separate spontaneously. The colour varies from snow-
white to greyish.
To this genus P e r s o o n has, in his Mycologia Europoea,
united two others, Oidium and Alysidium of K u n z e and
S c h m i d t , Mykol. Hefte 1. p. 11. The latter one is in reality
precisely the same, but the former certainly differs somewhat in
general habit; and yet I am inclined to follow P e r s o o n in
uniting tbe whole. Oidhm is illustrated both iii the system
VOL. II.