Class and Order CRYPTOGAMIA FUNGI, ¿¿««.—Nat. Ord. H Y P O X Y L A , De Cana
Grev— FUNGI, Juss. Hook.
GENERIC CHARACTER.
Receptaculum ohlcmgum, rima longitudinali dehiscens. Sporuloe in cellulis elon-
gatis, gelatinosis. Crusta nulla.
Receptacle oblong, bursting by a longitudinal slit, Sporules in elongated
gelatinous cells. Crust none.
SPECIFIC CHARACTER.
H y s t e r i u m Juniperi; ovale, nitidum, subplanum, minutum, cellulis sporuliferis
apicibus attenuatis.
H. oval, shining, somewhat plane, minute, the summits o f the sporuliferous
cells attenuated.
H y s t e r i u m Juniperi, Grev. Fl. Edin. ined.
H a e . On the dead leaves of the common Juniper {Junipems communis'), Bal-
muto. Miss B o s w e l l . Pentland Hills. Mountains of Cairngorm, very
abundantly. Summer and autumn.
Very minute, regularly oval, rather depressed, pai-allel with the nerve o f the
leaf, shining, and of a deeper black in the centre. When mature, it
bursts by a simple slit, which does not extend to either extremity. The
gelatinous mass formed of the elongated sporuliferous cells, very small ;
the cells themselves diaphanous, club-shaped, and bluntly attenuated at
their summits.
In the autumn of 1821, I found this minute hysterium on
the Pentland Hills, and ascertained it to be new. In a late
excursion to the Highlands with Dr H o o k e e and Mr W a l k
e r A r n o t t , it fell under our observation, in considerable
abundance; and Miss B o s w e l l has also recently discovered
it at Balmuto.
This is one of those species to which I alluded in a preceding
number, whose corneous receptacle seems to be formed
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