inclusa, in Callithamnio evidentissime vidi. Cum liis tamen
haud dictum volui partes intra cellulam matricalem nullo
certo ordine oriri; intra ipsam cellulam matricalem quasi
prolepsi quadam, partes ordine certo evolvi, credere forsan
liceat. In Polycoelia evidentissimum habemus exemplum telam
cellularem compositam intra cellulas singulas oriri, et sporas
quaternas intra cellulam matricalem formari omnibus est no-
tissimum.
A superficie visse nuclei partes quasi omnino inordinatæ
intra membranam exteriorem hyalinam obveniant; nucleo au-
tem feliciter secto aut compresso partes interiores certo quo-
dam ordine dispositæ, quasi a centrali puncto radiantes, aut
lobos plus minus subdivises,' fere fasciculatim exeuntes, formantes
adpareant. Utrum fasciculi plures, ubi adsint, cellulis
singulis subdivisis oriantur, an cellulis matricalibus pluribus
coalescentibus sensim proveniant, dicere non ausim.
Duos ordines, fronde articulata aut inarticulata facilius
distinctes, Gongylospermeis refero.
O r d o 1. C E R A M I E Æ .
J. Ag. Sp. Alg. Voi. I I . p . 1.
Algæ articulatæ monosiphoniæ, nudæ aut strato cellula-
rum sensim evoluto corticatæ, fibrisve radicalibus decurrenti-
bus obtectæ, demum quandoquidem cellulosæ. Cystocarpia
(favellæ) externa, nuda ramellisve involúcrala, quasi nucleo
nudo constituta; nucleus ramo adnatus, quasi ramulo immediate
transformato ortus, simpliciusculus aut lobatus, lobis
plus minus coalitis constitutus; gemmidia iterata divisione
intra cellulam matricalem orta, demum plurima rotundato-
angulata nullo ordine conspicuo conglobata aut subradiantia,
intra periderma hyalinum gelatinosum cohibita. Sphærosporæ
varie divisæ.
Quo sensu et ambitu Ceramieas in Speciebus Algarum
antea exposui, eodem paucis mutatis hodie ordinem adoptan-
dum censeo. Disponantur igitur genera:
TRIBUS L CALLITHAMMËÆ« Sphærosporis transformatione
ramuli aut articuli integri formatis:
I. Frons filiformis articulata liomogenea nuda, nunc
inferne corticata, fihris a ramorum basi intra mem-
hranani decurrentihus, aut stuposa, ramulis ramo-
rum. infimis deflexis extra frondis tubimi adparatum
fihrosuni formantihus.
* Favcllip. nuda', aut ramo imo alterove vix mutato
suffultee.
favelUs in ramo la t e r a l ib u s ...................... I . .Ca l l ith am n io n.
** Fa.veìhr involucro plus' minus regni ari cinctrp, in
ramulo subterminales.
Splioero.tpnrü ad ramulos v ix mutatos évolutif!
„ in ramulis heteroìnorphis . . .
,, intra ramulos involucrantes
fronde nuda
ramis involucri invicem liberis . . .
„ „ „ eoncretis . .
„ ramellis conformibus verticillatis vestita
II. H a l it i iam n io n .
III. B a i.lta.
IV. G e ip f it i is ia .
V. P a n d o r ea .
VI. H a lu r ü s .
2. Frons superne articulata aut fe re ad apicem continua,
corticis strato proprio extra axeni articuìa-
tum evoluto, serielms eellularum corticalimn srepe
pìurilms, extimis verticalibus minutis.
Frons pinnnta p in n is ìiom o g en e is ................................VII. P t il o t a .
„ ramosa certo stadio filis dasyoideis ohsita VIII. .? Thamnocarpus.
.1. Frons cpiasi heterogenea, nempe extra axem articula-
tmn aut continuum ramellis suhdifformilms verti-
'Cillatis plus minus cooperta, ramellis invicem liberi
s fructus generantilms.
a. axi articulato nudo aut fihris intra me.mhranam de-
currentibus corticato aut rameltis a ramorum basi
deflexis stuposo.
Sphærosporis triangule aut cruciatim divisis . . IX. C r o u a n ia .
X. ? G u l so n ia .
h. axi continuo, rameìlorum parte infima et fibris radicalibus
decurrentibus composito, rameìlorum fa -
sciculis extra axem tiberis.
XI. D a sy ph ila .