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7 8 6 CnONDKIEÆ. D e lisea .
insigni s t rat i cor t ical is su p r a co s tam u t r iu sq u e p ag inæ in o r a s s a t am; s trato
in terme dio p la u o , lat i tudinem s t rat i cor t ical is in c ra s sa t i vix æ q u a n t e ;
tubo cent ral i maximo, c r a s s i t iem dimidiam s t rat i intermedi i supe rante .
S p hæ ro sp o ræ n o n d um c o g n i t e v id e n tu r ; spor ifera enim p a r s a Montagneo
depicta, qua in de s c r ipt ione sp hæ ro sp o r a rum n i tu n tu r Kiitzing et
Rupreoht , ad D. pulchrara pe r t ine t , u t a Montagne ape r t is verbi s in ex -
plioationo ico n um d ic tum est.
I I h ü DOMELEÆ. 7 8 7
Ordo X V I. M O D O M E I E Æ .
Ehodomeleæ J. Ag. Symb. in L in noe a X V . p . 23. A lg . med. p .
116. E n d l Gen. P l. S u p p l I U , p . 41. Harv. Ner. austr. p ,
9. Ner. Bor. Amer. p . 9. Z anard. P l. mar. rubr. p . 47.
M o n i S y ï l p . 416 (excl. gener.) ; Rytiphleæ, Polyphaceæ,
Thamnophoreæ, Heterocladieæ, Anomalophylleæ et Ceramieæ
(quoad partes) Becsne Class, p . 62 squ.; Dasyeæ,
Polys iplionieæ Chondrieæ, Amansiæ, Rytiphleaceæ, Cur-
poblepliarideæ, Claudieæ (quoad partes) Kü tg . Phyc. ct
Sp. Alg.
Frons articulata monosiphonia, sæpissime polysiphonia aut areo-
lato-zonata, cellulis pericentralibus e regione positis, nuda
aut externe cellulis minoribus angulatis corticata. Cystoca
rp ia externa, pericarpio celluloso munita, carpostomio
regular! aperta; fila gemmidiifera invicem libera, a placenta
basali radiantia, in articulo terminali clavato transformato
gemmidia pyriformia foventia, Sphoerosporoe in c e l lulis
pericentralibus evolutæ, certo ordine seriatæ.
Algæ coccineæ aut purpurascentes, exs icoatione ut plurimum
atropurpureæ aut nigricantes, nunc lætiorem servantes
colorem aut facilius decoloratæ et albescentes. Frondes forma
variæ; inferiores filiformes teretiusculæ aut leviter compressæ,
fere totæ conformes (Polysiphonia, Toenioma, Alsidium, Bos-
trychia, Chondriopsis, Rytiphloea, Rhodomela), aut ramulis a caule
evidentius distinctis (Digenea, Trigenea, Bryothamnion) instruotæ,
paulo superiores complanatæ evadunt, costam propriam et laminam
separantes, cæterum conformes (Kützingia, Amansia, Dic-
tymenia, Vidalia, Lenormandia), aut difformes, ramulos fructíferos
quasi heterogéneos exserentes (Polyphacum, Heterocladia);
IV. 53
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