llab. ad oras Periiviæ circa Payla (Gaiidicbaud).
F rons g e la t inoso-ca r t i lagine a, deo r sum liliformis, te ros, podal is et ultra,
p e n næ p a s s e r inæ cras s i t ie, s implex, dicliotoma a u t in unico exemplar i
ramos i s s ima. Rami 4 - 6 u ncias longi, iu t e rd um dicbotomi , a t sæpius
s impl ices, elongati , spars i , spat i is p e r q u am variis s emi - se squipol l ic a r ibus
min o r ib u sq u e sejiinoti, ad or iginem li liformes, cito in laminam linearem
longi s s ime la n ceola tam, l ineam sesq u i l in e am la tam explanat i , acutis s imi ,
e r e c to -p a t e n te s , s in u b u s subobtus is . St ru c tu r a : f rons e te rnis cons ta t
s t rat is ma xime dis s imi libus , q u o rum inter ius e cellu lis cras s is filiformibus
a r t iculat is intus ma ter ie g ranulosa colorala replot is me dul lamque cons t i -
tu e nt i l ius ; me d ium ex utrioulis maximi s s acci formibus s en s im p e r ip h e r iam
v e r sus min o r ib u s subsphær i r . is , g r an u la colorata eximie globulosa
mill im. vix æq u a n t ia faci ll imequo dif tlucntia in c lu d e n t ib u s ; ex te r iu s ta n d
em e cellulis mimi t is violaoei s oblongis s er ia t is den s e s t ipa t is compos i tum.
Fila medul la r ia in cellulis clavatis a u t sp hær ic i s abeunt ia vidi, quæ
for s an pro utr ioulis s t rat i medi i ju n io rum li abondæ sunt . F ru c tu s in
ramis complana t is b in e tu be roulat is obvii . Conc e pta cula pus tulæformia,
mami l lam h en i i sp hær ic am referent ia , ad u t r amq u e p a g in am n e c non ad
ma rg in e s sp a r s a , sessilia, poro ta n d em apicali p e r tu s a , sp o r a s ros eas n u me
ro s a s ovato -o b lo n g a s foventia . Colo r violaceus , exs ioc at ione fu s cesoent i -
olivaoeus , ru b o re aliquo mi s tus . Subs tant ia gelatinosa, s icc a rigida admod
um fragilis. Alg a s t r u c tu r a et fruotu Gigar t inæ ah Agardbio juniore
r e f o rm a t e convenions , fo rma vero r amo rum pla n a ab eodem g en e re a
Lamourouxio Grevil leoque condi to tant i l lum a b e r r a n s .
I ta Auotor. Mihi, si q uid ex ai ialysi data c o n c lu d e r e lioeat, nullo r e sp
e c tu cum Gigart ina c onve ni re videtur , s e d s t ru c t u r am offert Solieriæ
subs imi lem. KUtzing, qui sp e c ime n vidit, s p bæ ro sp o r a s zo n a t im div isas
obsorvavit .
TRIBUS III. LOME^TARIE/E.
Frons tubulosa, diapliragnaatibus cellulosis intersepla. Cystocarpia
pericarpio proprio externo munita.
C X X . L o m e n t a r i a Lyngb. Hydr. Dan. p. 101. Gaill. Res.
Thalass. p. 20. Mont. Fl. Cariar. Pl. cell. p. 135. Endl. Gen.
pi. Suppl. III. p. 42. Cniut. limit, ap. omn.); Lomentaria et
Gastrocloniiim Kiitz. Phyc. Gen. p. 440— 41. (excl. spec.);
Cliylocbulia Grec. in Hook. Br. Fl. II. p. 297 (excl. sp.) J.
Ag. Alg. med. p. 109. Harv. Ner. au str. p. 79 e t Phycol.
B rit. lab. CXVIIL Gastridium Grev. Alg. Brit. (excl. sp.) p.
114. Kaliformia et Sedoidea Slackh. Mem. Soc. Mosqu. LI. p.
78 et 83. Chondriae sp. Ag. e t Auct.
Frons teretinscnla tubulosa, filis sparsis percursa et diapbragmatibus
cellulosis intersepta, cellulis peripliericis siibduplici serio dispositis;
inferne qnandoquidom solidescens, ramis tubiilosis.
K e r a m id ia a parte inOata frondis formata, intra pericarpium
spliæricum vel ovatum, carpostomio demum pertusum, gemmidia
obconica, a placenta radiantia, foventia. Sphoerosporoe
.per ramilles sparsæ aut densius aggregate, in cellulis infra-
cortioalibus formate, rotundatæ, triangule divisæ.
Frondes gelatinoso-membranaceoe, inferne aliquando subcartila-
gineæ, carneo-roseæ aut purpurascentes, aliquando aureo et purpureo
iridescentes, teretiusculæ, sæpius tonilosæ et articulatira con-
slrictæ, intiis tubulosæ et diapliragmatibus cellulosis interseptæ, nunc
inferne solidescentes; a radice erectiusculæ, rarius decumbentes et
a surcnio radicante adscendentes, ramificatione aut deliquescente
di-tricbotoma aut magis paniculata, ramis nempe in fronde principali
sparsis oppositis verticillatisve; duplici saltern strato contexte. Tubus
intermis filis sparsissimis elongatis articulatis percurritur; cellulæ
interiores, tnbum nempe incliidentes et diapliragmata formantes,
sunt oblongo-angiilatæ, sæpius simpüci serie dispositæ; cellulæ
corticales, siibcorticalibus minores, endochromate colorate, simplici
serie dispositæ, strato byalino plus minus evidenti gelatinoso extus
tectæ.
Diapliragmata, quibus tubus internus in loculos dividitiir, cellulis
unica serie dispositis constant. In caule solido cellulæ interiores
oblongæ longiores, exterioribus magis rotundatis brevioribus. Fila,
quæ tubum interiorem secus parietes percurriint, cellulis singulis
rotundatis, diametro fili duplo et ultra crassioribus obsita sunt;
cRllulæ iste initio liberæ, deraum forsan cura strato periplierico
coalescentes; spbærosporas in bis cellulis formari puto.
Keramidia in ramis ramulisque sparsa aut aggregata, a parte infiala
frondis evoluta, nunc fere spliærice prominentia, nunc ovata, nunc
fin specie generis incerta) fere frondi immersa. Pericarpium strato
frondis exteriore subduplici conflatum, carpostomio, ni fallor semper,
demum pertiisum. Nucleus placenta basali plus minus elevata siif-
fiiltiis, réticulé filorum anastomosantium cinctus, canali ad carpo-
stomium ducente demura liberatus. Fila gemmidiifera a placenta
egredientia sæpius abbreviata, nunc (L. parvula) elongata, in articulis
terminalibus gemmidia obovata aut potius obconica foventia.
Spbærosporæ sine ordine perceptibili dispositæ, in ramulis laxius
sparsæ aut plerumque densius certis locis aggregate, in cellulis
1. y
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