eanwhile _P. sulphureum_ Sturgis
stands, a new type for _P. auriscalpium_ Cke., the description modified
to suit; the lamented pioneer-author receives honor due, and his
handsome species, with its "golden graving," may now march, let us hope,
under appropriate banner far down the fair highway to future fame!

48. PHYSARUM OBLATUM _Macbr._

PLATE III., Fig. 6; PLATE XIV., Figs. 3, 3 _a_, 3 _b_.

1879. _Physarum ornatum_ Peck, Rep. _N. Y. Museum_, XXXI., p. 40 (?).
1893. _Physarum oblatum_ Macbr., _Bull. Lab. Nat. Hist. Iowa_, II.,
p. 384.
1896. _Craterium maydis_ Morg., _Myx. Miam. Vall._, p. 87.
1909. _Physarum maydis_ Torr., _Flor. des Myxo._, p. 193.
1911. _Physarum maydis_ Torr. List., _Mycet., 2nd ed._, p. 59.

Sporangia gregarious, stipitate, small, bright yellow, globose or
depressed-globose, rough; stipe reddish-brown or fuliginous, even,
short, slender; hypothallus scant, black, or none; columella none;
threads of the capillitium yellow, delicate, connecting the rather dense
and abundant yellow lime-granules; spore-mass brownish-black, spores
violaceous, minutely but distinctly spinulose, 9-11 mu.

This species is easily recognizable by its brilliant yellow color,
somewhat rugose, sometimes scaly peridium, its richly calcareous
capillitium, also bright yellow where not weathered or faded, its dark
brown, translucent, non-calcareous stem. In dehiscence, the base of the
peridium in cup-form, sometimes persists. This circumstance, with the
fact that decaying maize-stalks and leaves are a favorite habitat, led
Professor Morgan to its description as _Craterium maydis_. But it is
doubtless a physarum, occurring on habitats of all sorts, from Ohio to
Iowa, Colorado and Washington. Ceylon(?).

_Physarum ornatum_ Peck is doubtfully cited here, although Professor
Morgan thought it the same as _P. oblatum_. As a matter of fact the
original brief description, _op. cit._, does not suggest either _P.
oblatum_ or _P. maydis_; rather a form of _Tilmadoche viridis_.
Professor Sturgis, _Notes on Some Type Specimens of Myxo., in the N. Y.
Museum, Trans. Conn. Acad. Arts and Sci._, Vol. X., Pt. 2, p. 470, says
that of the type almost nothing remains, that the name _P. ornatum_ Pk.
"should be discarded."

49. PHYSARUM GALBEUM _Wing._

1890. _Physarum galbeum_ Wing., Ell., _N. A. F._, 2491
(no description).
1892. _Physarum petersii_ Berk. & C., Mass., _Mon._, p. 296, in part.
1894.