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E R IN E U M S o r b i .
Incurved Mountain Ash Erineum.
Class and Order CRYPTOGAMIA I’UNGI, Lmn— Nat Obd. GASTROMYCI!
G EN E R IC C HARAC T ER .
Peridia ßocciformia, subdiaphana, varia, subsimplicia, aggregato-ccespitosa, fo -
liis vivis parasitica. Sporulce minutissima, smpissime nulla ?
Peridia flocciform, subdiaphanous, various, subsimple, aggregato-cespitose,
parasitic on living leaves. Sporules exceedingly minute, very often
wanting ?
S P E C IF IC CHARAC TER .
E rineum Sorbi; amphigenum, distinctum vel subeffusiim, superßciale; laxum,
primo rubellum demum fulvoferrugineum ; peridiis cylindricis apicibus oh-
tusis subincurvis.
E. on both sides of the leaf, distinct, or somewhat effused, superficial, lax,
at first reddish, at length brown-ferruginous; peridia cylindrical, obtuse,
and somewhat incurved at the summits.
E rineum Sorbi, Punch, M S S . / * Kunze.— Kunze, Mycol. Hcfie, 2. p. 1 5 9 .
E rineum Sorheum, Pers. Myc. Eur. 1. p. 4.
P h y l l e r iu m Sorheum, Deutschl. Schwaem. No. 1 2 4 .
H ab. On the leaves of the Mountain Ash (Sorbus AucupariaJ. Summer.
Woods at Kinnordy, and elsewhere.
Plant forming distinct spots at first, afterwards often becoming confluent,
especially towards the margins and extremity of the leaves; of a pale
reddish-pink colour when young, b u t soon changing to a ferruginous-
brown. Peridia laxly interwoven, cylindrical, rather slender, obtuse and
somewhat incurved at their summits.
A second species of Erineum is said to grow in Sweden
upon the Sorbus Aucuparia, and is described by Professor
K u n z e under the name of E . Aucuparice. I t is the Phyllerium
sorbeum of F r i e s , Obs. Myc. v. 1. p. 218. The present
species does not seem to he so common as most others hitherto
discovered in this country.
Fig. 1. a, F . Sorbi, natural size, b, Peridia, magnified.