TRI15IIS 2. POllEXFEMEÆ fronde plana tota continua sub-
flabellato-areolata, nempe cellulis majoribus areolas con-
stituentibus subflabellatim dispositis (nec in zonas transversales
conjunctis).
S p hæ ro sp o ris in p a r t e f r o n d i s p le rum q u e f e n e s tr a ta e vo lu tis.
F r o n s t l a b e l l a t o - l a c i n i a t a a v e n i a CXXVIII. M a r t e n s ia .
S p hæ ro sp o ris in s tic h id iis p r o p r iis .
F r o n s d i c h o t o m o - l a c i n i a t a e c o s t a t a v e n o s a . CXXIX. P o l l e x k e n ia .
” ” p i n n a t i f l d a c o s t a t a CXXX. J e a n n e r e t t ia .
TRIBUS 3 . ALSIDIEÆ fronde articulata aut inferne mo x corticata
extus fasciata, cellulis pericentralibus hio illio in-
æquilongis, ah exterioribus diametro parum diversis.
* S p hæ ro sp o ris in a rticu lo sin p u lis , lin e a s p i r a l i p e r p a r tem
f r u c tig e r am su p e r p o sitis .
f S p hæ ro sp o ris in r am o v ix m u ta to e vo lu tis.
Frons flliformis laxe ramosa .............................. CXXXI. A l s id iu m .
” teretiuscula, ramulis densis circumcirca
h ó r r id a CXXXII. D ig e n e a .
f f S p hæ ro sp o ris in s tic h id iis a x illa r ib u s .
Frons compressa au t ungulata 2—4 fariam
r am u lo s a ..............................................................CXXXIII. B r y o t h a m n io n .
** S p hæ ro sp o ris in a rticu lo p lu r ib u s v e r tic illa tis .
Frons filiformis, a rticu la ta au t fasciata . . . CXXXIV. B o s t r y c h ia .
*** S p hæ ro sp o ris in p a r t e f r u c tig e r a b ifa r iam s e r ia tis ( in a r t i culo
g em in is o p p o sitis , q u a s i in te rfe c ta co sta s e p a r a tis ) .
f S p hæ ro s p o ris in ram u lo v ix m u ta to e vo lu tis.
Frons filiformis au t compressa . ................... CXXXV. R h o d o m e l a .
f f S p hæ ro sp o ris in s tic h id iis p r o p r iis .
Frons plana inferne c o s t a t a ...............................CXXXVI. O d o n t h a l ia .
TRIBUS 4 . POLYSIPHONIEÆ fronde filiformi polysiphonia
aut complanata et transverse zonata, nuda aut sursum plus
minus corticata, cellulis pericentralibus regulariter e regione
positis et eeque longis, in corticatis per corticem translucen-
tibus.
1. S p hæ ro sp o ris in a r ticu lo sin g u lis, c e llu lis p ræ g n a n tib u s l i n
e a s p ir a li p e r p a r tem f ru c tig e r am su p e r p o sitis .
* S p hæ ro sp o ris in ram o v ix m u ta to e vo lu tis.
Frons flliformis an t com p la iia ta ....................... CXXXVII. P o l y s i p h o n i a .
*'* S p hæ ro sp o ris in s tic h id iis p r o p r iis .
Frons plana c o s t a t a CXXXVIII. D ic t y m e n ia .
2. S p hæ ro sp o ris b ifa r iam s e r ia tis , nempe in p a r t e f r u c t í f e r a
'q u a s i u troque la te re costæ in te rje c tæ d is p o s itis , in a rticu lo
g em in is o p p o sitis.
f S iph on ibu s p lu r ib u s c ir c a c en tra lem in orbem d is p o s itis .
Frons filiformis an t coiiiplanata subcanalicu-
CXXXIX. R y t ip h l æ a .
f f Cellulis sonarum unicam seriem, frondis paginæ parallelam,
formantibus.
Frons plana zonis horizontalibus, areolis recta
n g u l i s ....................................................................... CXL. K ü t z in g ia .
Frons plana zonis adscendentibus, areolis
..................................................................................... ^ X I I . L e n o r m a n d ia .
f f f C e llu lis 0o n a rum d u a s p lu r e s v e se r ie s f r o n d i p a r a l l e la s
fo rm a n tib u s .
* Zonis horizontalibus, areolis rectangulis.
, . CXLII. A m a n s ia . Frons plana ........................................................
♦* Zonis adscendentibus, areolis rliombeìs.
, 1 CXLIII. V id a l ia . Frons plana n u d a .....................................................
» » prolificantibus foliolis a s p e ra . . CXLIV. P o l y p h a c u m .
U ” dense p a ra lle le -v e n o sa CXLV. X e u p .y m e n ia .
3 S p hæ ro sp o ris in s tic h id io in cu rvo s im p lic i se rie su p e rp o si-
ti s ( a lte r a s e r ie q u a si d e f d e n te in p a r t e f r u c t í f e r a h em ip h y lla ).
Frons ecostata ilabellatim e x p a n s a ................. CXLVI. P l a c o p h o r a .
.1 costata h e n iip h y lla ..................................... CXLVII. C l i f t o n ia .
» 11 foliosa foliis d is tic h is CXLVIII. P o l y z o n ia .
TRIBUS 5. .DASYEÆ fronde heteromorpha, primaria nempe
polysiphonia aut cellulosa, fllis moiiosiphoneis coloratis aut
ri
il!