and structure
after all the spores have been scattered. When mature the spore-mass
seems to roll about as a ball, freely within the net, the spores being
thus gradually dispersed. The calyculus when present is without veins.
_C. minima_ Berk. & C., and _C. microscopica_ Berk. & C. are doubtless
the same thing. _Grev._, II., p. 67, 1823. See also _Bot. Gaz._, XIX.,
397.

Rare. Pennsylvania, South Carolina, Missouri, Iowa; Black Hills, South
Dakota.

4. CRIBRARIA RUFA (_Roth_) _Rost._

PLATE XIX., Fig. 8.

1788. _Stemonitis rufa_ Roth, _Fl. Germ._, I., p. 548.
1794. _Cribraria rufescens_ Pers., Roemer, _N. Mag. Bot._, I.,
p. 91.
1797. _Cribraria fulva_ Schrad., _Nov. Gen. Pl._, p. 5.

Sporangia scattered, sub-globose or turbinate, dark or reddish orange,
.5-.7 mm. in diameter, erect, stipitate; stipe about equalling the
height of the sporangium or longer, dark brown or black; calyculus
one-third to one-half the sporangium, the margin toothed, the wall
ribbed and continuous with the open wide-meshed net; the network deep
yellow or orange, the threads flattened; the nodes not thickened, little
differentiated; spores concolorous, by transmitted light, pale yellow,
verruculose, 5-7 mu.

Similar to the preceding, but generally much larger and not so much
inclined to brown. The size, however, is extremely variable in sporangia
from the same plasmodium (reported white), some no larger than those of
the species reckoned most minute.

Oregon. _Professor Morton Peck._

5. CRIBRARIA SPLENDENS (_Schrader_) _Rost._

PLATE XIX., Fig. 10.

1797. _Dictydium splendens_ Schrad., _Nov. Gen._, p. 14.
1801. _Cribraria splendens_ (Schrad.) Pers., _Syn. Fung._, p. 191.

Sporangia gregarious, globose, dusky yellow when filled with spores,
dull or dusky brown when these are discharged, stipitate; stipe long,
3-4 times the sporangium, subulate, erect-nodding, brown; hypothallus
none; network brown, with large meshes, imperfectly defined nodes and
flattened threads; calyculus none, its place supplied by nine or ten
distinct, firm ribs which radiate from the stipe and support the net,
branching to blend with its reticulations; spore-mass yellow, spores by
transmitted light, colorless, smooth or nearly so, 6-7.5 mu.

Of this species two specimens only are before us, one from Muscatine
County, Iowa, and one from Washington (state). The species seems thus to
have wide range, but to be exceedingly rare. It dif