75 
Nummularia Moselei 
The Kansas 
specimens were on decorticated wood and were rather smaller. 
Pleospora Clarkeiana,— Perithecia minute (.i""'"*), membrana- 
ceous^ scattered, sunk in the substance of the leaf, the upper part 
slightly projecting and closely covered by the blackened epidermis, 
and finally collapsing ; ostiola scarcely prominent; asci subcylindri- 
cal, 125 X 25/^; sporidia biseriate, pyriform or oblong, mostly slightly 
constricted across the middle, about 7-septate, becoming muriform 
and brown. 
On dead leaves of Plantago maritima ? Island of Grand Menan, 
(Maine), June, 1884. Miss C H. Clarke. Allied to P, Heleochari- 
^/J, Karst, but asci and sporidia smaller. 
bPH^ERELLA GALL.E — Perithecia minute, scattered, or in groups 
of 2-3 together, rupturing and loosening the epidermis; asci 40-45 
X 10//, sessile; .sporidia crowded in 2-3 series, slender, clavate, 
i-septate, 1 2-15* x3yU (at the broad end). 
On galls of Vacciniiim corymbosnm, Newfield, N. J., July, 1883. 
Notes on the Botrychia —I give some facts that struck me in 
recently gathering specimens of Botrychium rutaceum, Sw., and B. 
lanceolatum^ Angst. The peculiarity of their growth is this : they 
are found at the head of a ravine, in shade,* but generally in shaly 
soil that is almost barren of small undergrowth, and has but a slight 
covering of vegetable mould — sometimes none at all. They were so 
mature on June 28th that a tiny cloud of spores flew from the fertile 
fronds the first time they were touched. They grow in little colo- 
nies here and there where the soil seems to be suited to them. The 
tvvo species grow together, B, rutaceum having sterile fronds that are 
almost uniform in width throughout, and pinnules that are broad, 
blunt and toothed. B. lanceolatum, on the contrary, is deltoid in 
shape, and has comparatively long and narrow pinnules. There is 
also a form oi B. rutaceum in which the sterile frond is almost as 
finely incised as in B. ternatum var. dissectum. This is exceedingly 
pretty and delicate. 
. I had been quite inclined to believe that these two species were 
in reality only different forms of the same thing. They grow in the 
same locality, and often close to each other. But proximity by no 
nieans signifies consanguinity, and small forms of B. Virginkum 
grew there even more plentifully than either of the others,^ although 
|t preferred the vegetable mould. So I made an examination of the 
bud forms and found them to agree substantially with Mr. Daven- 
Port's descriptions. There was a slight difference in the rutaceum, or 
fertile 
"taincan(e/oliutn as lie designates i 
^"gjit. He says: " the apex of tht^ 
yne bud toward the sterile frond, which clasps it with its side divis- 
ions and bends its apex downward over the whole." In my speci- 
"^ens the fertile frond is shorter than the sterile in the bud, and 
stands up perfectly straight ; but it is clasped by the sterile frond 
exactly as he describes. Both the figure and description of B. lan- 
ceolatum that he gives are capital, and cannot be bettered. 
There is in my herbarium a monstrosity of B. rutaceum in which 
