202 EXDOSPOREAE [LYCOGALA 



when magnified colourless, minutely reticulated over the 

 greater part of the surface, 5 to 6/i diam. — Rost. Mon., 

 p. 288 ; Mass. Mon., 124 ; Zopf in Schenk Handb. Bot., 

 iii. pt. 2, 167 ; Macbr. N. Am. Slime-Moulds, 176. Diphtherium 

 flavo-fuscum Ehrenberg Sylv. Myc. Berol., 14, 27 (1818). 

 Reticularia flavo-fusca Fr. Syst. Myc, iii. 88 (1829). R. 

 testacea Wallr. Fl. Crypt. Germ., 340^(1833) ? 



PI. 15">. — a. aethalium ; b. reticulated surface of cortex; c. vertical section of 

 cortex ; (1) outer layer composed of interwoven empty flattened tubes ; (2) vesicles 

 containing yellow or reddish-yellow matter, with the interspaces between them tra- 

 versed by tubular processes which are more or less continuous with the pseudo- 

 capillitium; (3) homogeneous inner layer, perforated by the pseudo-capillitium; d. pseudo- 

 capillitium consisting of empty tubes, occasionally containing spores in the rounded 

 ends and in limited spaces in the continuity of the tubes ; two large isolated vesicles 

 are also shown ; e. part of pseudo-capillitium tube, showing a papillose surface ; 

 /. spores, showing unequally distributed reticulation ; (North America). 



In this species large isolated vesicles filled with granular matter and 

 measuring from 50 to 100 /x diam. are often found scattered among the 

 spores. 



Hob. On dead wood. — New Forest, Hants (B.M. 2831) ; Ampthill, 

 Beds (B.M. 2832) ; Germany (B.M. 2836) ; Austria (B.M. 2834) ; 

 Ceylon (K. 1732) ; Japan (B.M. 2833) ; Toronto, Canada (B.M. 2835) ; 

 Philadelphia (B.M. slide) ; Ohio (B.M. slide) ; Iowa (B.M. 827) ; 

 South Carolina (B.M. 838). 



2. L. epidendrum Fries Syst. Myc, iii. 80 (1829). Plas- 

 modium coral-red, rarely cream-coloured or yellow. Aethalia 

 crowded or scattered, subglobose, sessile, 2 to 15 mm. diam., 

 pinkish-grey, yellowish-brown, red-brown or nearly black, 

 minutely warted ; cortex varying in thickness, minutely 

 warted with irregular superficial vesicles. Pseudo-capillitium 

 arising from all parts of the inner side of the cortex in the 

 form of loosely branching and anastomosing thin-walled 

 tubes, varying from 3 to 20 /x diam., usually marked with 

 close transverse wrinkles ; free branches numerous, clavate or 

 rounded at the ends ; mass of pseudo-capillitium and spores 

 pinkish grey or pink. Spores almost colourless, closely 

 reticulated over the greater part of the surface, the remaining 

 part marked with a loose reticulation or with short raised 

 lines and warts, 4 to 7 //. diam. — Rost. Versuch, 3 (1873), & 

 Mon., p. 285 ; Mass. Mon., 121 ; Macbr. N. Am. Slime- 

 Moulds, 175. Lycoperdon Epidendrum Linn. Sp. PL, 

 1184 (1753). L. pisiforme Jacq. Misc. Austr., i. 119 

 t. 7 (1778). L. chalybeum Batsch Elench. Fung., 155 

 (1783). L. verrucosum Batsch I.e. Mucor Lycogala Scop. 

 Fl. Cam., ii. 496 (1772). M. fragiformis Schaeff. Fung. 

 Bav., iv. no. 283 (1774). Galoperdon epidendrum Wiggers 

 Fl. Holsat., 109 (1780). Lycogala miniatum Pers. in Roemer 

 N. Mag. Bot., i. 87 (1794) ; Lister Mycetozoa, 209. L. 

 punctata Pers. Syn., 158 (1801). L. ferruginea Schum. Enum. 

 PI. Saell., ii. 192 (1803). L. cinerea Schum. I.e., 193 ? 

 L. plumbea Schum. I.e. ? L. affine Berk. & Br. in Journ. Linn. 



