. 
168 
On dead trunks of Carpinus Betulus. 
This is what is generally held to be the case, but personally, I 
have found that all the specimens on Carpinus attributed to M/. 
magnum are either M. stromaticum or other perfectly distinct 
fungi such as Stilbospora angustata, Pers. 
Subspecies 2. Melanconium juglandinum, Kunze, in se 
Flor. Dresd. ed. II, ii. 260 (1823). Sace. Syll. iii. 753; Fun 
Ttal. tab. 1081 
M. Juglandis, Corda; Ie. Fung. iii. 21, £. 58, and forma diffusa, 
f. 59 (18 
Syed as above, usually 18-20 x 12-14 uw, but reaching even to 
25x15 
On branches and trunks of ae sometimes attacking and 
killing the branches of old, vin 8 walnut trees; its large 
black tendrils sometimes cover a a. unk, 
There are also in Herb. Berk., pe v. S.A., several closely 
allied forms—one on Juglans regia, with more cilipec: d and less 
opaque spores (Ellis, New Jersey, no. 2580! and N. Amer. Fung. 
no. 120!); a similar form on Hickory y, with very a spores 
(Eliis, New Jersey, no. 2581!) ; and an effused form on Acer, 
17-18 » (W. et oe, nos. 5615, 5646! ; Ellis, Potsdam, 
N.Y., no. 1900 !). Here, as in the other cases, the effused form 
is merely the result of exposure to the weather 
This species, no. 6, bei eing already well- aiows as British, needs 
no further description, but the case is different with the next. 
Melanconium ovatum, Link, Sp. Pl. ii. 89 (1825). Sace. 
syli iii. 758. 
Stilbospora ovata, Pers. Obs. Mycol. i. 31, tab. 2 (Sm 
truncis fagineis”’); Syn. p. 96. Shae — Gast. Filer. tab. 
212, f. s p-p-; non Berk. Engl. FI. 
only M. fuplondiaae: but Sivietaieren yen and even 
M. bicolor, ete. But Persoon says (Obs. p. 31) “in truncis 
lariter effusis, Tcaae maximis compactis oralibts et one 
bus atris pellucidis.” He adds that g omers ovata, Schmidt 
et Kunze n. 35, and S. Juglandis, Fr. Exs. n. 215 “ statum 
primitivum aren ”’ but these references are now of little value. 
No doubt Link’s _ Ww 
specimen on Beech a 
not like the other le rge-spo 
should therefore be restricted to this fungus. 
