'i
Priucodont i speciei p roxima, a t la lior, et forma p in n u la rum atquo
sporuphyl lorum al iquantulum dive r sa facile dignosoalur . Tli. Cunninghami i
nullo rospoctu mihi diversa ad p a re t . Ploc amium maxillosum (Fucus
maxillosus P o ir .) ad h anc forsan sp e c iem p e r t in e t ; p a t r iam a u t em indiam
or ientalem indic a t Lamouroux, quo d al iam sp e c iem in dicare videtur.
Ili. TTiAMNOCAiii'us. Ramis alterne geminis, cystocarpiis in fronde
sessilibus.
1 4. P l . co rn u tum Clurn. Hist. Fuc. tab. 2 5 8 ) f r o n d e a n c ip i t e d o -
c om p o s i t o - p i n n a t a , p i n n i s a l t e r n o g em i n i s , i n f e r i o r e la c in i is q u e
s n p e r i o r i s a b asi p a n i n i l a t i o r e l i n e a r i b u s a p i c o a c um i n a t i s
siibiila lis i n t e g e r r im i s , s p o r o p b y l l i s d e c om p o s i t e d i c l i o t om i s ,
r am i s o b tu s i s in f r a b i f i i r c a t io n e s fe r t ilib u s , d u p l i c i s e r i e s p bæ r
o s p o r a s g e r e n t i b u s .
Fuous co rn u tu s T u rn . l. c.
Ploc amium co rn u tum H a rv . N e r . a u s tr . p . 123.
Thamnophora co rn u ta G re v . Alg. B r it . S y n . p . X L IX ! !
Tb amn o c a rp u s co rn u tu s K ü lz . P h y c . p . 450 tub. 59 I I I ! S p . Aly.
p . 886!
Sphærococc i is c o rn u tu s Ag. sp. p . 293!
llab . ad Cap. b. S p e i (L a l a n d e ! Ila rv e y ! P a p p e ! e i e .)
Radix u t in a n t e c ed e n t ib u s fib rosa, Coral lorli izam æmulans . F rondes
cæsp i to sæ, 3—4-pol l ioares , c omp r e s sæ vel anc ipi tes , t r ip in n a tæ vel raro
u l te r ius de c omp o s i tæ, p u rp u r eæ, exs ic c a t ione suboar t i lagineæ. P innula rum
g emin a rum infer ior s implex, bis l ineam longa, a bas i, vix s emi l ine am lata,
fere linearis, s e d a medio a c umin a ta e t s u b u la l a ; su p e r io r gemin a rum
p innulata . Sporophyl lorum frutiouli axi llares valde d ecompos i t i e t dens i,
rami s te re t iu scu l i s obtus is a u t subclavat i s e t emarginat is , s p hæro sp o r a rum
se r ie b u s infra bi furoa t iones d e soendent ibus . Cys toca rpia in pinnul is s e s silia,
su b sp hær ic a .
Habi tu magis q u am c l iarac ter ibus a p ræo e d e n t ib u s abludit.
Species inquirendoe.
1 5. P l. b raciiiocarpüm [Kütz. sp. p. 8 8 5 ) p b y c o r a a t e a n g u s to l i n e a r i
m e m b r a n a c e o r am o s i s s im o , r am i s e re c tiiis c iilis i r r e g u l a r i t e r
s u b p i n n a t i s , p i n n i s a l t e r n e t e r n i s — q iiin is b r e v i o r i b u s ; c a r p o -
c lo n iis la x e r am o s i s , r am i s b ra c liia tis p a t e n t i s s im i s e lo n g a ti s ,
la x e d is p o s iti s , a p i c e tum i d i s la n c e o l a t i s a c u tis s p e rm o p b o r i s .
Hab . a d Nov. Z e l a n d i am (J. I). H o o k e r ) .
16. Pl. l i ì I'TOPi iy l lum (Kütz. sp. p. 8 8 5 ) p l iy c oma to s u b p a lm a r i a n g
u s t i s s im o s u b lìl if o rmi s u b d i c b o t em o voi vago r am o s i s s im o , r a -
iiiis r em o t o llexiiosis, ad ilex iiras a l t e r n a n t e s i i n ila tn r a l ito r b i p i n -
n a tis , spiiiis g r a c i lib u s e l o n g a t i s a c u tis s imi s s u b u la t is , p in n u l i s q i i e
c a p ill a c e i s b r e v i o r i b u s p e c t i n a t i s ; d e n t i b u s d o n i um in c a r p o -
clo n ia e l o n g a t a to r i ilo s a c u r v a t a tr a n smiit a ti s . Magn. 2— 4".
Hab. ad V a r i -D i c i n e n s -L a n d (.1. 1). H o o k e r ) .
17. P l . a f f in e (Kütz. sp. p. 8 8 4 ) 1 ' / j— 2 p o l l i c a r o , r am i s l i n c a r i lms
aiig iistissimis, 2— 3 p in n a t i s , ji ig am o n l i s ad b a s in p in n i ila r iim
d ilata tis, p in n i s o p p o s i t i s s p in e s c e n t ib u s , s um m i s a p i c e r e v o lu lis
vel su b lia ra a tis.
Hab. a d P o r t Nata l (Kra iiss),
18. P l . F ro e l ic ii ia n um (Kütz. sp. p. 8 8 4 ) foro s p itl iamæ iim r am o s i s -
s im um b a s i c r a s s iu s c u l i im , r am u l i s s u p e r i o r i b u s d e n s e a g g r e g a tis
c a p ill a r ib u s , p in n i s p in n u l is q iio inæq iia lib iis, irre g iil a riln i s laxis
a l te r n i s ( n o n p e c t i n a t i s ) ; c a r p o c l o n i i s laxis s p a r s i s so lit a r ii s
e l o n g a t i s r e c t i s o b tu s is sirap lic issin iis.
Hab. in o r i s S e n e g am b iæ .
19. TTiAM.NOPn. BRASIL1ENSIS (Grcv. in Aug. St. Hil. Yoy. Diain. II. p.
4 4 8 ) f r o n d e t r i p in n a t i i ì d a , p i n n u l i s u ltimis s u b u la t is ad a p i c em
i n t e g e r r im i s , p u lv i n u l i s r e o e p t a c u l o r um ax illa rib u s .
Hab . ad o r a s Brasiliæ.
A Th. Mer tensi i differt fronde minor i, pinnul is n o n uni iale ral i ter d e n -
ticula tis .
2 0 . P l, p u s il lu m (Sonder. Hot. zeit. 1 8 4 5 p. 5 4 ) f r o n d e t e n e r r im a
s u b c om p r e s s a b i - t r i p i n i i a t a , p in n i s p in n i i l i s q u e a l t e r n e g em in i s
s u ltu latis r e c t i s v el s u b in c i irv is .
Pl. pus i l lum S o n d . l. c. PI. P r e is s . p . 48. H a rv . N e r . a u s tr . p . 123.
l lab. a d l i t tu s o c c i d e n t a l e No væ H o l la n d iæ (P r o i s s . )
Frons in caule Gauliniæ? o c e an icæ paras i t ica , vix poll icaris , cæspi tosa,
tenuis s ima. Pinnulæ, fere l ineam longæ, su b u la tæ. S p hæro sp o ræ rooepta -
oulis propr i i s lanceolatis , sæp e bifidis inc lusæ, biser iatæ, sp hær icæ, nucleo
triangulal im quadr idiviso. Coccidia desunt.
A Plocamio cocoineo Lgb., oui s t ru c tu r a omnino convenit, facile d i -
s t ingui tur f ronde humi liore, tonuiore, magis div isa, p ræ s e r t im vero pinnis
al terne geminis non te rnis qualernisve.
"ïiiil
m■
i(j, [
' i l s l
m