4 6 0 C lIÆ T A N G IEÆ . Chætangium.
Vix ulla Algarum species magis q u am ilio Fu cu s s a c c a tu s fuit ai»
Aigologis cum heterogenei s confusa. Pr ima r ius Fu cu s s a c c a tu s Lepechinü
e t Tiksii, in mar i Kamt schat ioo lectus , Ilalosacci i species (u n a plu r e sv e ? )
videtur . Hic Mertensio fuit Fuc. s aocatus , u t a notula in opero T u r n e r i / F .
p. 105 p a tet . Dele s s er ia s a c c a ta Lamourouxii, quam hic cura Mer tons iana
specie confudit, e s t Chætangium s aocatum, ut a loco natali conspic iatur .
Fuous s a c c a tu s Turneri forsan plure s sp e c ie s Ila lo sacci i, a Postels et
Ru p r e c h t dis tinctas, u n a cum Lamourouxiana oapensi , q uam mi s se loco
natali sub sua pla n ta ci tavit, complect i tur . Sub Halymenia s a c c a ta Agardhi
al latæ omne s e n ume r a n tu r , forma capens i , cum sp e c ie q u ad am Kamt soha -
tica ooujuncta, var ietat is loco aliata . Ades t pia n ta p ræ te r e a Californioa
(¡uam nomine Dum. s a c c a t e Grev. des ig n a tam vidi, q uæ Lomen ta r iæ sp e cies
ap p a re t . Divers itatos e t affinitates v e ræ p l a n t e c a p e n s i s 'p r im um Har veyo
suboluerunt , qui, licet f ruc tus non viderit, hanc Grateloupiæ o r n a t e - p r o -
x im e a c c e d e n t em c r o d i d i t . S u h r novo nomine pla ntam o ap e n sem proposui t ,
ra t ione s a u tem di s t inct ionis omnino p ræte r i i t . Kiitzing, Suhrii nomino
conservato, Chæta ngium s a c c a tum Halo saooiis refert . ipse f ruc tu deteclo
confus ionem l. c. ex t r ic a r e mol i tus sum.
2 . CIIÆT.? FASTIGIATO.M (Bonj Fl. Malouin. n. 2 3 ) f r o n d e n a n a t n -
biilo sa , p a r c e d i c h o t om a siib fa stig ia ta , s o gm e n t i s p a t e n t i b u s o b -
tu s in s c u l is .
Halymenia fas tigiata Borg L e .!
Dumont ia fas t igiata Borg Yog. Coqu. n. 82. PL 18 Æa 2 " M iz so
p. 719! ^
Ha la ra ch u io n ? fas t igiatum M tz . sp. p. 722.
Hab . in o c e a n o a u s i r a l i a d instila s Ma lo u in a s (D ’ü r v i l l e ! ) .
Fro n s vix poll icar is , segme nt i s lineam diamet ro æ q u a n t ib u s ; a s tipi te
brevi s s imo obconico e xpa nsa , s en s imq u e cyl indrace a tubulosa, paroi s d i -
c h o tomi i s , 3 - 4 , div isa. Segme nta in fra bi furoat iones leviter dilatata
te rmin a b a p a rum a t te n u a l a obtusa, omnia p a ten t ia . F ru c tu s (see. Bory)
in s egme n t i s su p e r io r ib u s immer s i . Su b s tan t ia memb r a n a c e o - c o rn e a . Color
r e cent is sino dubio p u rp u r a s c e n s , e x s i c c a t e fuscescens . S t r a tum inte rnum
lilis c o n s ta t angus t i s s imis , r e t icu la t im laxe an a s tomo s an t ib u s , in medio
f rondis su b d e n s io r ib u s ; p e r ip h e r iam ver sus magis adproxima t is , apicibus
quas i in cellulam oolora tam te rmin a n t ib u s . Cellulæ i s tæ s t r a tum cor t icale
efficiunt admo d um tenue. Es s ic c a ta non b e n e reviviscit , acido vero super
fusa eximie dis tendi tur , e t s t ru c tu r a conspic ua evadit .
Dubia hujus gene ri s species . S t ru c tu r a s t rat i inter ior is a Dumontia
Halymenia et alns Gener ibus , q uæ il lorum sp e c ieb u s fu n d a ru n t recen- ’
tiores, differì. S t r a tum cor t icale, quo d cellulis subs impl ici ser ie dispos itis
cons ta re mihi visura es t, a Chætangi is reoedi t. xNusquam tamen moliu s
hodie disponi tur .
Chætangium, ClIÆTANGIEÆ. 4 6 1
H. No'itioge.m a . Fronde lineari dichotomo-fasiigiata.
3. CiiÆT. VAitiOLOSUM (Mont. Prodr. Phyc. anlarcl. p. 6 ) fronde
c omp r e s sa lineari subcanal iculata r egulari ter d i c l io lom o - f a s t i -
g ia ta , s e gmon t i s linearibus flabel latim expans i s in t e g e r r imi s ,
t e rmina l ibus c o n fo rmi lms palent ibus .
Chondrus var iolosus M o n t. P ro d r . l. c.
Nothogonia variolo sa iMont. Vog. a u Pol. S u d . p . 110 lab. 10 fig. 3
e l Pl. Cell. E x o t. Cent. IV . p . 40. ìlo ó k . e t lla r v . Ft. a n ta r c t. I . p . 1881!
F i llz . sp . p . 793 !
Hub, in mari australi ad Ínsula s Auckland (D ’Lrville! Ho ok e r ! )
et Ke rguelen.
Fro n d e s cæsp i to sæ 4 — 5 unciales , angus te l ineares , 1 — 1 l/( bu. latæ,
c omp r e s sæ pla næ v. sulioanaliculatæ, bas i cu n e a tæ, dein repet i te dic lio-
tomæ e t fas tigiatæ, segme nt i s f labellatim e x p a n s i s ,*ita ut frons explanata
s cmio rb em reg u lä rem efficiat. S egmenta te rmina l ia apico n u n c ro to n data
nuno ema rgina ta . Su b s tan t ia cart ilaginea. Color fus co- ruber , p u r p
u r a so e n s . Cl ia r te laxe ad hær e t .
4. CiiÆT. CHiLE.NSE (J. A g . A lg . L i e b m . p. 1 0 ) f ronde c omp r e s sa
lineari subcanal iculata p innat im d ich o toma d e c omp o s i ta , s e g men
t i s in f e r io r ibu s cunea t i s subpalmat i fìdis , supe r io r ibus l ine a ribus
a ma r g in e prol i feri s , terminal ibus e long a l i s iuæqual i ter
cons tric t i s divaricatis .
Chæt. ohilense J . Ag. l. c. in A d . Ito lm . 1847.
Hab. in mari australi ad Valparaiso (Hb. Bin d e r ! ) .
Fro n d e s 2 - 3 -pol l icares , d ens e cæspi tosæ, inferne cu ne at im expansæ,
usquo 3 l ineas ia læ subpalmat i t is sæ, dein lineares ro p e t i to -d ich o tomæ,
segme nt i s in termedi is prolonga t is ita u t f rons quod ammo d o pinna ta evadat.
.Segmenta dens is s ima ct proli f icat iones in s u p e r n ume ro sæ cæsp i t em valde
densum efficiunt; te rmina l ia al iquando sesquipoll icar ia, p le rumq u e magis
divar icata, min e ad me d ium cons t r icta. Colo r fuscescens . Sulis tantia
cor iacea.
Pianta ad Nothogeniam c e r te p ro x ime ac codens e t forsan cum bao
ident ic a ; h a b i tum a u t em div e r sum in duta, cæsp i te dens iori , ramificatione
ir regular i , e t proli ficat ionibi is dis l inguenda.
IH. CnÆi'ANGiu.vi. Fronde vage divisa , prolificationihiis ramulosa.
5. Cu. o im xm i (Lin. Mant. p. 3 1 2 ) f ron d e plana l ineari ob lon g a
s impl ic iuscula liiiida aut cu n e a t im e sp ansa e l subpalmata, a
di s co et ma rg ino proli fera, prol i l ical ionibt is con fo rmibu s .