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233
Ad truncos pmi putridos prope Helsingfors.
Facie externa facile pro statu Lecideæ vernali* sumta (accedente
ad prasinam), at constans; sporæ ovoideæ formæ ut in Arthoniit multis,
quare eam separare non dubitavi. Cf. Leciäeam proximellam vel exilem.
20. Lecidea improvisa Nyl. — Thallus vix ullus visus
(si vestigia adsunt vastissime diffluunt); apothecia låte sparsa
(licet passim invicem approximata) nigra superficialia planiuscula
aut convexa immarginata, sæpe inæqualia vel e binis confluentia
fere mediocria (låtit, circa 0,6—0,7 millim.) vel parva, intus
ci-nerascentia; sporæ innumeræ in thecis tumentibus sphæricæ
minimæ, diametri 0,oo2—0,oos5 millim., paraphyses non discretæ,
hypothecium incolor. Gelatina bymenea iodo intense coerulescens,
dein obscurata.
In Savolaxia supra sæpes ligneas (Edwin Nylander) mixtim
cum Trackylia tigillari et ad cortices pini ibidem, ad Lauritsala
etc.; dein in regione Helsingforsiensi a me lecla in Mjölö supra
ligna abietina vetusta.
Extus parum notabilis et facie fere Lecideæ vernaHi var. anomal«
apotheciis nigris, sed intus maxime distincta. Coroparanda est L.
globu-lispora Nyl. (e Freto Magellanico), sed hæc apotheciis planioribus sporis
majoribus, facie prope Lecideæ myriocarpæ. Paraphyses non discretæ,
sed tamquam canaliculi tubulosi verticales (crass. 0,ooi millim.) visibiles
in massa gelatinoidea sat firma thalamii, non confertæ. — Sub nomine
„Lecideæ lapponicæ" hujus adest in hb. Ach. e Lapponia forma lignicola,
thalli macula vel substrato ochraceo, quare ut nihil typicum exprimens
hoc nomen non retinui.
21. Lecidea neglecta Nyl. — Thallus albido-cinereus
cru-stam sat tenuem formans tenuiter granulosam, granulis
subconfluen-tibus plagulas latitudinis pollicaris vel ultra exhibens; apothecia
parva superficialia opaca planiuscula, margine obtuso aut demum
deplanato vel evanescente, intus concolora nigra; sporæ 8nre
fusi-formi-oblongæ vel oblongæ, longit. 0,oos—0,on millim., crassit.
0,oo3—4 millim., in thecis oblongis facile separandis e thalamio,
paraphyses mediocres articulata1, hypothecium fusconigrum.
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