129 
NOTES ON MYCETOZOA. 
‘By Arruur Lister, F.R.S., anp Gutrenma Lister, | 
(Puate 459.) 
-Badhamia sagt: n. sp. (Pl. 459, fig. De hares lr 
white. Sporangia white, globose or ovoid 1-2 diam., 
crowded and sessile on a scanty pale oelitacdonis biyportaline, or 
more rarely solitary on short yellow-brown stalks ; sporangium-wall 
exposing the grey inner irs Ae dhe a suites 3 network of white, 
very broad strands charged with lime throughout; spores 11 yp 
diam., in large clusters of about twenty, dark purple-brown, minutely 
warted, the warting being rather stronger on one side than on the 
other; they are traversed by a narrow, sometimes forked ridge, 
which projects on the spore margin. This species was found b 
Pe 
of Populus canescens, about forty feet long, in Bus ood, Epping 
Forest: during the following week we gathered many large clusters 
of sporangia an inch or two wide, scattered along the whole length 
f ; Some were mature, others were taking form from masses 
of white plasmodium issuing from the bark. In July, 1903, we 
obtained a further supply from the same source, and also from 
another fallen poplar stem, where the white plasmodium was just 
emerging; we removed this with a portion of the bark, and placed 
it under a glass shade; next morning the plasmodium had crept a 
short distance from its first position and had formed into sporangia, 
which developed perfectly in the course of about forty-eight hours. 
In general appearance this species resembles B. hyalina, from which 
it is chiefly pte nt sr rapes plasmodium and the banded 
sp ave &@ specim B. populina gathered in mature 
condition from a rere of rer in o Walthe mstow, June, 1899 
rotucota List.* During the year 1903 we had the sormbet 
records of the occurrence of this species, In June we were favoured 
by Messrs. Pavillard and Lagarde with a specimen from Montpellier 
on dead leaves; the sporangia are of the typical form, mostly on 
slender stalks. In August it occurred in vast profusion with both 
stalked and sessile sporangia on a stack of brushwood at Chigwell 
Lane, Essex, covering the slender twigs as if with hoar frost. In 
September we received it from Prof. Schinz, gathered in the 
summer near Ziirich. In uvernber we found it on a log in a pile 
of brushwood at Leytonstone. It was also discovered in abundance 
by Mr. T. Petch on branches and twigs in a ditch in East 
ae ah 
ns Berk. Messrs. Pavillard and Lagarde have re- 
corded the erie nh of this species at Montpellier.| They describe 
* Journ. Bot. 1897, p. 209. 
+ Bull. Soe. Myce. de Franee, t. xix. fase. 2, p. 6. 
JourNAL OF Botany,—Vou. 42. [May, 1904.] K 
