MIMICRY IN FUNGI. 
153 
Stictis. Equally startling are the resemblances between widely 
separated groups of fungi, as particularly the entire Hypogaeous 
Gasteromycetes, which in form, size, odour, habit, and all save 
fructification, imitate the Truffles {Tuheracei). Podaxon again, in 
appearance, resembles Copriniis ; and UypoJyssus might be mis- 
taken for an immature Crucihulum. Verpa has the form of a 
Phallus, but deficient in a volva. The largest species of Wynnea 
might almost be mistaken for a Sparassis, if the fruit were not 
examined. And Clavaria has its club-shaped forms repeated in 
Cordyceps and Geoglossum, with its branched forms in Lachno- 
cladiuni. The species of Crater ellus are not unlike large Pezizee, 
and the smaller forms of the latter genus are represented in Q/- 
phella, where some correspond to Hymenocypha, others to Mollisia, 
and others to Dasyscypha. 
We have not designed to do more than to suggest a subject for 
reflection, and not by any means to exhaust it. Neither shall we 
attempt to demonstrate the “ why and wherefore ” of such coin- 
cidences. For the present we are content to regard them simply 
as coincidences, although, in some cases, so striking that we are loth 
to consider them accidental, but that they have a cause, and are a 
mystery which we are at present unable to account for or explain. 
GENETIC RELATIONS OF ALGiE. 
The Editor of the “ Royal Microscopical Journal ’’ has given* a 
resume of P. Richter’s suggestions! as to the genetic connection of 
certain Unicellular Phycochromace^e, which will be read with 
interest, in connection with our list of Palmellaceae. “ Whether 
various forms of unicellular algee, hitherto considered distinct, and 
ranged under the genera Glceacapsa, Chroococcus, Aplianocapsa, 
Glceothece, and Aphanothece, are not really genetically connected, 
displaying a kind of polymorphism ; a form with but slightly 
encysted cells ( Aplianocapsa ) intervening between one with en- 
cysted spherical ( Gleeocapsa ) and one with encysted cylindrical 
cells ( Glceothece and Aphanothece), A similar relationship has, in 
fact, already been suggested by Naegeli in his ‘ Einzelligen Algen.’ ” 
The form previously described by the author under the name 
Aphanothece caldariorum, presents an intermediate form between 
that genus and Glceothece, and would appear to be completed in its 
cycle of development with two other forms named by A. liraun 
Glceothece inconspicua and Aphanocapsa nehulosa, being a maturer 
condition of the first of these two. In the same way A. Braun’s 
Aphanocapsa biformis may be shown to occur in three different 
forms. 
The lowest form of the Phycochromacese is the naked Aphano- 
capsa condition, corresponding to among the Chlorophyl- 
lophyce^e. From this naked or only slightly encysted condition is 
* “ Journal of Koyal Microscopical Society,’’ 2nd ser., Yol. i., p. 291, 
f “Hedwigia,” xix. (1880), pp. 169-171, and 191-6, 
