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M o u g e o t . Its principal distinction resides in the tuber, at
the base, which is said at first to inclose the clavate hymenium,
and at length to protrude it. His character of the species is, ’
P ha. Sclerotioides, sparsa ; d a v u la simplice alba, tubérculo badio.
He observes, that it must not be confounded with Clavaria
Sclerotioides of D e C a n d o l l e , the hymenium of which,
he adds, is a continuation of the tuber, and of the same colour.
I cannot help suspecting, that the two plants are nevertheless
the same ; for, according to D e C a n d o l l e ’s account,
the hymenium was reddish when dried, but appeared to have
been white when recent. The size is in both the same, that of
2 -3 lines in length. The form also exactly agrees-;'and'The
habitat too remarkable in coincidence to be overlooked. Dr
M o u g e o t found his specimens on the dried stems of Sonchus
alpinas and Cacalia albifrons. M . C h a i l l e t found those
which D e C a n d o l l e examined, on the dried stems of Gen-
tiana lutea. The circumstances of the clavate hymenium being
protruded from the tuber, is scarcely yet sufficient to be a
generic character, as other nearly allied plants have been said
to do the same, especially Clavaria Phacorhiza, which is so
figured and described by S o w e r b y .
Proceeding upon the above grounds, 1 have extended P e r s
o o n ’s new genus, and included all those Clavarioe which
have so singular a character as the radicular tuber,—surely a
more striking distinction than a slight variation in the form of
the hymenium. The fructification is similar in the whole.
F r i e s has formed several genera of Clavaria, on which
futm-e observations will be made. His Typhula and Pistilla-
ria contain plants which I consider as coming more naturally
under Phacorhiza.
Clavaria capillaris ( Typhula vilhsa. F r i e s ) , referred by
most authors to our plant, is certainly different, having a hairy
stem, whence the name villosa given by S c h u m a c h e r . Of
this plant H o l m s k i o l d has an excellent figure.
Fig. 1. Plank, nat. size. Fig. 2. A plant magnijied.