202 
Mycologia 
species, as it is by Macbride, evidently the name ” megalosporum 
B. & C.” takes precedence of “ eximitmi Pk.” 
“5701 Didymium nectriaeforme Berk. & Curt, fob mort. 
Querc. coll. D. Murray. Mass. Sprague (828).” 
This is a fairly abundant specimen of Physarum virescens 
Ditm., in good condition. 
“ Didymium obrusseum B. & C. ad folia. Cuba. C. Wright 
(799) B. & C. Fung: Cub; 532.” 
Two specimens are referred to under the original description 
(Journ. Linn. Soc., 10: 348, 1868) i.e. Nos. 664 and 799 of 
Wright’s Cuban Fungi, of which the first mentioned is the type. 
Both of these numbers are found in the Curtis herbarium, as well 
as the specimen collected by Lindheimer on leaves of Gonolobus 
in Texas and referred to under the second description of the spe- 
cies (Grevillea 2; 53, 1873). Fortunately the co-type. No. 664, 
is in fairly good condition and is easily referable to Physarum 
polycephaluni Schw., var. obrusseum (B. & C.) List. Through 
a clerical error on Curtis’ part, the specific name on the Texas 
specimen appears as obfuscum.” 
“(2987) Didymium, straw, leaves, sticks, etc.. Sept. 1850. 
Santee Canal, S. C. Ravenel (1100).” 
To this label Curtis has added the note, “ D. xanthopo prox: 
sed floccis albis.” The specimen is a co-type of Didymium proxi- 
murn B. & C., which Berkeley differentiates from D. xanthopus 
on the ground of a difference in the color of the capillitium. ft 
is, however, unquestionably the latter form. 
“Didymium pruinosum B. & C. 530. on sticks. Jan., 1857. 
Cuba, coll. Wright (269).” 
Nothing remains of this specimen except one or two slender 
black stalks. The capillitium has disappeared. The few spores 
remaining are bright purple brown, minutely spinulose, and 
measure 10-11.5/A diam. Lister refers it, doubtless correctly, to 
Physarum compressum A. & S. 
“Didymium pusillum B. & C. (1345) ad Herb, corrumpent. 
Septr. Society Hill, S. C.’’ 
The specimen shows a few crushed sporangia with delicate. 
