es of white, or rarely yellowish-white lime-granules at the nodes;
no true columella, but often a central irregular mass of white
lime-granules; spores dark violet-brown, verruculose, 9-10 mu.

Pennsylvania. _Dr. Rex._

Lister, _op. cit._, describes a variety, _sessile_, presenting
plasmodiocarpous fructification, from Ceylon, also from Antigua, but
there are some doubts as to the identity of these with American sessile
and plasmodiocarpous forms. Vid. _Jour. Bot._ XXXVI., p. 113.

47. PHYSARUM AURISCALPIUM _Cooke_.

1877. _Physarum auriscalpium_ Cooke, _Myx. U. S._, Am. Lyc. Nat. Hist.
N. Y., XI., p. 384.
1877. _Physarum auriscalpium_ Cke., _Myx. Gr. Brit._, Pl. 24,
f. 253-4.
1893. _Physarum sulphureum_ (Alb. & Schw.), Sturgis, _Bot. Gaz._,
XVIII., p. 197.
1898. _Physarum auriscalpium_ Cke., List., _Jour. Bot._, XXXVI.,
p. 115.
1911. _Physarum auriscalpium_ Cke., List., _Mycetozoa, 2nd ed._,
Syn. excl.

Sporangia scattered, stipitate or occasionally sub-sessile spherical,
.8-1 mm. high; peridium granulated, bright golden yellow; stipe, when
present, one-half to two-thirds the height of the sporangium,
blackish-brown; hypothallus, minute, thin, brown; columella absent;
capillitium rather dense, composed of large angular nodes, completely
filled with bright yellow granules of lime, and connected by very short,
delicate, colorless internodes destitute of lime; spores globose
minutely verruculose, or asperate, 10.7-11.8 mu in diameter,
brownish-violet by transmitted light, black in the mass.

This is the original description, 1893, of _P. sulphureum_ (Alb. &
Schw.) Sturgis; the author last named having compared certain stalked
New England forms with what he could find of _P. sulphureum_ in the
herbarium of Schweinitz at Philadelphia, and having, as he thought,
established identity.

Meantime Mr. Lister had been inclined to refer _P. auriscalpium_ Cke. to
_P. rubiginosum_ Fr., _Mycetozoa_, p. 61.

In 1898 Professor Sturgis and Mr. Lister agreed that the New England
specimens, owing to color and character of stipe and some other
differences could not be the Schweinitzian species, but did indeed
conform much better with those in London labelled _P. auriscalpium_ Cke.

Accordingly _P. sulphureum_ is something else, very different, (v. A. &
S., Cons. _Fung. Tab._, VI., f. 1), and by aid of recent[28] discoveries
in Sweden goes its own way again. M