diocarpous,
sessile or stipitate, stipes when present yellow, with or without lime,
often connected by a hypothallus; peridium thin, squamulose;
capillitium persistent, intricate, the nodules white, more or less
confluent at the center to form a real or a pseudo-columella; spores
brownish-purple, spinulose, 7-8 mu.

Reported from Europe, Africa, Ceylon.

PHYSARUM ROSEUM _Berk. & Br._

1873. _Physarum roseum_ Berk. & Br., _Jour. Linn. Soc._, XIV., p. 84.

Plasmodium rose-red; sporangia gregarious, stipitate, globose, rose-red;
the stipe erect, brown, rugulose, translucent; capillitium lax,
delicate, lilac, the nodules few, large, purple-red, branching; spores
reddish-lilac or brown, minutely spinulose, 7-10 mu.

Reported from Ceylon, Java, Borneo, Japan.

PHYSARUM DICTYOSPERMUM _List._

1905. _Physarum dictyospermum_ List., _Jour. Bot._, Vol. XLIII.,
p. 112.

"It is distinguished from the other known species of _Physarum_ by the
strongly reticulated spores. Its nearest ally is perhaps _P.
psittacinum_ which it resembles in having orange-red lime-knots and in
the sporangium-wall being studded with orange crystalline disks."
_Lister._

Reported collected once only; New Zealand.

PHYSARUM STRAMINIPES _List._

1898. _Physarum straminipes_ List., _Jour. Bot._, Vol. XXXVI., p. 163.

Plasmodium white; sporangia greyish-white, obovoid or wedge-shaped, .7
mm. in diameter, clustered or scattered, stipitate or sessile, when
stipitate stalks long, weak; peridium membranous, pale purple;
capillitium a persistent rigid net, the nodules white, rounded,
sometimes aggregate as a pseudo-columella; spores purple-brown, 10-11 mu,
warted, the papillae in definite patches.

Related to _P. compressum_.

Reported from England; Germany.

PHYSARUM CRATERIFORME _Petch._

_Physarum crateriforme_ Petch, _Ann. Perad._, IV., p. 304.
_Physarum crateriforme_ Petch, List., _Mycetozoa, 2nd ed._, p. 69,
Pl. 76.

Sporangia gregarious, globose, clavate or crateriform, sessile or
stipitate, white; stalk when present opaque conical, black below, white
above, in crateriform sporangia entering and developed as a columella;
capillitium various, strongly calcareous, the nodules either grouped in
a pseudo-columella, or in globose sporangia, rod-like, ascending; spores
closely spinulose, 11-15 mu.

Reported from Ceylon, Japan, West Indies; Lisbon.

PHYSARUM GULIELMAE _Penzig._

1898. _Physarum gul