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POPULAR SCIENCE REVIEW. 
length with short, patent, alternate (mostly) branchlets. The 
branchlets were broadest towards the apex, so as to be almost 
elavate, and the extremity was beset with two or three short 
spicules (PI. LXVIII. fig. 2). Each spicule was surmounted by 
an obovate spore (a) attached to the spicule by its smallest end 
{PI. LXVIII. fig. 3). The presence of fertile threads gave the pale 
ochraceous tint to the tufts already alluded to. This tint was 
so slight that perhaps it would have passed unnoticed but for 
the proximity of the snow-white tufts of barren threads. The 
fertile flocci, it may be from the weight of the spores, were 
decumbent, hence the fertile tufts were not much elevated above 
the surface of the matrix. 
This is a most interesting mould belonging to the order of 
Mucedines , but it seemed to agree so little with the characters 
of any known genus, that, on distributing specimens last year, 
it was placed provisionally in a new genus under the name of 
Clinotrichum lanosum ; * since then, with the advice of some 
mycological friends, it has been referred to the old genus 
Rhinotrichum , as Rhinotrichum lanosum . Without entering 
here upon the reasons which led to this course, or attempting 
to discuss generic and specific distinctions, it is sufficient to 
indicate that the mould in question possessed such positive 
characters, and was so different from all recognised forms, that it 
not only had claims to be regarded as a distinct species, but it 
still remains doubtful whether it should not constitute the 
type of a new genus. 
The mould above described having become established for a 
week or two, small blackish spots made their appearance on the 
paper, sometimes amongst thin patches of the mould and some- 
times outside them. These spots, at first cloudy and indefinite, 
varied in size, but were usually less than a quarter of an inch in 
diameter. The varnish of the paper was afterwards pushed off 
in little translucent flakes or scales, an erect olivaceous mould 
appeared, and the patches extended to nearly an inch in dia- 
meter, maintaining an almost universal circular form. 
This new mould sometimes possessed a dirty reddish tint, 
but was commonly dark olive. There could be no mistake 
about the genus to which this mould belonged ; it had all the 
essential characters of Penicillium. Erect jointed threads, 
branched in the upper portion in a fasciculate manner, and 
bearing long beaded threads of spores, which formed a tassel- 
like head, at the apex of each fertile thread (PI. LXVIII. fig. 4). 
* Clinotrichum, gen. nov. Hyphasma creeping; fertile flocci septate, 
decumbent, simple, or branched ; branchlets alternate, patent, short, bearing 
at their tips a few spores attached to short spicules ; spores simple. Type, 
Clinotrichum lanosum. — Cooke, Fungi Brit. Exs. No. 356. 
