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corticale e cellulis interioribus majoribus et laxe cohibitis,
exterioribus superficiem versus sensim rainoribus et arctius
concretis connatum ; corticis pars interior rhizoideis articulatis
demum numerosioribus percursa, exterior cellulis interdum
anticlinice seriatis eonspicua; cellulae glandulinae magis minusve
numerosae cortici immersae. — Sporangia ignota. Cystocarpia
supra thallum sparsa, frondi immersa, utrinque parum aut nihil
prominula, carpostomio demum aperta; plexus circumnuclearis
nullus ; cortici interiori rhizoideis coudensato immersus
goni-moblastus parvam praebet cellulam ceutralem, e cujus parte
inferiore complures rami paniculatim ramosi, dense congesti et
pauca tila sterilia inter se includentes, undique extrorsum
radiantes exeunt; horum ramorum apices cymatim ramosi in
articulis supremis gemmidia singula formant; gemmidia matura
in peripherico nuclei parte sine ordine aggregata apparent.
Species typica Turnerella Mertensiana (Post. et Rupr.)
Schmitz.
T. Pennyi (Harv.) Schmitz mscr., Kallymenia Pennyi Harv.
Ner. bor-am. p. 172, J. Ag. Sp. III. p. 223, Kjellin. N. I. Algfl.
p. 206 (162) pro parte, vix quoad specim. groenland., J. Ag.
Analecta p. 69. — Tab. nostra II fig. 3.
Specimina groenlandica cum speciminibus originalibus
Harveyanis (ex Assistance Bay, leg. Dr. Sutherland), in herb.
Trinity Coll. Dublin asservatis, optime conveniunt. Similia sunt
specimina in eodem herbario asservata a Dr. Lyall in Queens
Channel lecta (Dickie Alg. Cumb. p. 238), dum specimen e
Port Kennedy (leg Dr. Walker, cfr. Dickie Alg. Walk. p. 86)
forma aliquanto diversa est.
Thallus non affixus, in fundo libere jacens (eodem modo
ac Turnerella rosacea (J. Ag.), diametro usque 20 ctm., forma
magnopere varia, in speciminibus junioribus rotundatus v. ovalis,
margine plerumque irregulariter sinuatus v. lobatus; in
speciminibus veteribus thallus forma magis irregularis, nonnunquam
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