(58) 
under the names lumago , Antenna, ria, Capnodium , etc., but their positive 
connection with these plants, positive at least in the case of the specimen 
figured in Plate III, Fig. 2, of course destroys any sort of specific individu- 
ality. I cannot say that they are reproductive bodies, but they certainly 
look like it. Other plants not distantly related have such forms of fruit. 
It is probable that the conceptacle, with its contained sporangia, in all these 
plants, is the result of a peculiar union of specialized cells (17), as in the 
Peronosporise. 
Sphserotheca castagnei , Lev. On Taraxicum, Hop , Spirea, etc. To 
this species we refer with doubt the plant figured on Plate III, Fig. 3, 
found on Erechtites hieracifolius , but the conceptacle is larger (1-245 in.) 
and the mycelium denser than in any undoubted plants of the species no- 
ticed, and the appendages somewhat different. Instead, too, of being dis- 
tributed over the plant, this is found almost entirely upon the stems and 
under sides of the leaves, in patches. Appendages (of which there are one 
to three) colored to a septum. Sporangium one, spores eight, oval, 1-8000 
by 1-4300 in. 
Phyllactinia guttata , Lev., ( Plate IV ] Fig. 6.) Common on Fraxinus 
viridis. This species is reported to be common on Quercus , Carpinus , Ber- 
beris, Alnus , Corylus , etc. 
Podosphcera kunzei (?'), Lev. ( Plate 111 , Fig. 2.) On cultivated 
cherry. This is almost surely not kunzei , Lev., but it is the nearest to it 
of any I know and I am loth to call it new, since so conspicuous and injurious 
a species could hardly have escaped attention. Leaves of al] varieties of 
cultivated cherries were distorted and caused to fall, from the middle of 
the summer until autumn. My notes are as follows : Mycelium thin, evanes- 
cent ; appendages about twelve, colored at base, sometimes septate, simple 
or but little dichotomously forked; conceptacle black, 1-300 in., gregarious 
on the upper side of leaves. Sporangium eight-spored. The spore-like forms 
on the appendages have already been referred to. These were by no means 
on all the plants, but occurred on this one as shown. 
Microsphseria extensa, C. & P., ( Plate IV, Fig. 2.) On Quercus rubra 
and Q. palustris in woods. The upper sides of the leaves are conspicuously 
whitened. 
M. friesii , Lev. Very common on Syringa vulgaris. The concepta- 
cles are sometimes abundant, but not always. The divided and curled tips 
of the appendages are very beautiful in perfect specimens. 
M. rovenelii, Berk., ( Plate IV, Figs. 7 to 110 On Gleditchia tri- 
acanthos. This is certainly the same as my specimen in RavenePs exsiccati, 
but the mycelium is much more dense. In this respect it surpasses all I 
have seen. The leaves are very white. 
M. elevata, n. sp., ( Plate II, Fig. 4.) Upper sides of leaves of Ca- 
talpa bignouioides. Mycelium thin, web-like, rather evanescent. Concepta- 
cles 1-250 in., conspicuously reticulated, raised from the leaf ; appendages 
about twelve, colored at base, often simple, sometimes branched near the 
base, usually 2 to 4 times dichotomously forked, very long ; sporangia four, 
17. Sachs’ Text Book of Botany, English Ed., 1875, p. 256. 
