1. Th. DORSIFER.A (Ag. sp. I. p. 3 7 2 ) f i o n d o p l a n a disticlio d c c o i n -
p o s i t o - p i n n a t a , p in n i s a d p r o x im a t i s a l te r n i s , basi a tle n i ia ta ii i-
te griiisc iilis, s u p e r n e s e r r a t i s l i n e a r i b u s , s e r r a t u r i s a b asi la tio ri
s u b i to a t t e n u a t i s a c u tis , c o c c id ii s in f r a a p i c e s p i n n a r um in a lt
e r u t r a p a g in a 3 — 4 a g g re g a lis .
Rhodome la ? liorsi fera Ag. l. c . / S y d . p . "197!
Mammea dors i fera J. Ay. S ym b . 1 p . 22 !
Thysanocladia dors i fera En d l. S u p p l. H I . p . 44! K ü tz . sp. p . 769!
H a rv . N e r . a u s lr . la b . AXA'17
Lenormandia dors ifera M o n t. in A n n . S c . N a t. M a r s . 1844. PI. l i ,
fig. 2 !
Flab. ad o r a s Novæ l l o lla n d iæ (Mus, P a r is ! )
Frons s p i th amæ a tr ipinnata, pinni s in super iore p a r to ,c r e b e r r imi s ,
vix lineam d i s ta n t ib u s , al ternis, a ma rgino ju g ameu t i plani lineam lati
dis tiche e g r e d ie n t ib u s ; infer ior ibus compos i t is , ima bas i angus t ior ibus et
integriusoulis, s u p e rn e ser rat i s , apice p in n u la t i s ; supe r ior ibus p innulas æm u -
lant ibus simpl iciusculis . Pinnulæ semipollicares , se r r a tu r i s crebr i s incisæ.
Infra apioe.s p innularum coccidia in pagina plana proveniunt , 2—5 agglome
rata. Colo r for ru g in eo -p n rp u r e u s . Subs tant ia memb r an a c e a .
2. I h. coriacea (Sond. Bot. Zeil. 1 8 4 5 p. 5 6 ) f r o n d e p la n a d i s t ic h e
d e c om p o s i t o - p i n n a t a , p in n i s a d p r o x im a t i s s u b o p p o s i t i s c o i n p o s i t o -
p in n a t i l id i s , s e r r a t u r i s o b tu s iu s c u l i s , co c c id i s . . . ,
Sp hæro c o c c u s co r iaccus S o n d . l. c. e t Alg. P re iss . p . 45.
Thysanoc ladia ? cor iacea H a rv . N e r . A u s lr . p . 90 lab. X X X V I !
Rhynohocooous co r iaceus K iitz . Bo t. Z e it. 1847 p . 23 S p . Alg. p . 7 5 5 !
Hab. a d l i t tu s o c c i d e n t a l e Novæ l lo l la n d iæ (P r e i s s ! )
’’Radix la te ca rnos a. F rondes longi tudine et latitudine fere 6-pol l ioares,
in r amo s nonnullos pr imar ios , inferno denuda tos , a medio d en s e p iu -
natifidos, div isæ. Rami pr imar i i plani, a t cos ta inferne in c r a s sa ta ancipites
e t in infima p a r te lamina obl i tera ta subnudi , % - % poll icem lati, co r ia -
c e o -memb r a n ao e i . Rami seoundar i i c t su p e r io r e s s u r sum sens im breviores ,
lineares plani, infe rne incras sat i , cos ta ev a nesc ente s u r sum enerves, In -
tr ipinnat i, pinni s pinnul isque oppos itis su b-oppos i t i sve planis linearibus
obtus is a u t subacut is . Pinnulæ ultimæ- % u n ciam longæ s impl ices aut
d e n t a t e . Su b s tan t ia cor iacea. Colo r e x s ic c a tæ f e r ru g in e o -p u rp u r e u s .”
Harvey me jud ic e h anc pla ntam ju r e optimo ad Thysanocladiam duxit .
Dif ferentia s c o s t e q ua sdam ex i s tere dix it, quas raihi videre s ane haud
cont igit . S t ru c tu r a in omnibus spe c iebus gene ri s exa c te eadem mihi adnimium
ded e r im vitio ver l i t (B o n ite p . 83) ille idem, qui, ut ex eodem opere
appa re at , differentiam Gigar t inæ e t Gracilariæ no n d um pe r spexe r i t !
parui t. Cum Gelidio c e r te nulla afl initas. A Spbærococco (Rhynohocoooo
Kiitz.) defeotu tubi cent ral i s nullo negot io disti iiguitu r.
Auctor i tate Sonderi e t Harveyi pinna s oppos i tas dixi. Ex fragmeutis ,
q uæ vidi, potius pinna s al ternas credidis sem, a t juveniles ita adproximatas
ut ramificationis vera norma in his æg r e dijudicatur . Ser ius p e r p ar ia
ad p ro x ima n tu r ; vix tamen vere oppos i tæ mihi ohvenerunt .
3. Tu. OPPosiTiFor.iA (Ag. sp. p. 2 9 4 ) c a u le s c o n s , c om p r e s s a , ramis
p in n a t im d e c om p o s i t i s , p in n i s s u b o p p o s i tis lin e a r i b u s , s u p e r i o r i -
b u s s u b lìlifo rmib iis ; p in n u l i s s imp l ic ib u s , a u t in fra a p i c em t r i -
c u s p id a tis , a u t i r r e g u l a r i u s p in n e lla tis .
Sp hærocoocus opposit ifollus Ag. Sp. Aly. l. c. S y s t. p . 230!
Gelidium oppositi folium G r e v .; S o n d e r Aly. P r e iss . p . 27! K iitz . sp.
p . 766!
Hai), ad o r a s Novæ l lo l la n d iæ (Mu s . P a r i s ! Prei.s s ! )
Fro n s pedalis , caule compros.so p e n n am sc r ip to r iam minorem fero
cras s i t ie æquante , simjfiici, pinni s 1 —4-poll icari lnis subdis t ichis obsito.
Pinnæ ambi tu linoar i- lanceolate., oppos i te p in n u l a tæ; p in n u læ pa tente s
sesqui l ineam dis tantes , lineares bas i apiceque a t te n u a tæ, in juiiiore [?j
planta semi l ine am latæ c t semipollicares , in planta adul t iore a u t in su p c riore
p a r te fere filiformes, % lineam vix latæ., poll icares e t ult ra, plu s
minus de c omp o s i tæ, nunc simpl ices, nunc inferne simpl ices in fra apicem
3a. Th. p e c t i n a t a (G re v . e t Ila r v . in H a rv . N e r . a u s tr . 91) caule p r i mar
io oompre s so-anoipi t i cor iaoeo-ca r t i logineo n ec al alo supra ramulis
(s e t i sve ) crebe r r imi s subulat is p a r t i t i sq u e dens is s ime onusto, ramis
graci libus confert is pec t inat is b ip e ct iuat isque, lacin iis oppos itis üli for-
in ibus acut is s impl icibus vel apice ramulos is ; f ructu ignoto.
Hab. ad Swan River Novæ Hollandiæ (Mylne).
Radix lato ca rnosa. Frons peda l is s implex a u t p a rum s u p r a bas in in
ramos nonnullos pr inc ipales divisa . Gaules plano-compres s i , anc ipi tes sed
non alati , J / unciam diamet ro æquantos , inferne denuda t i , in super iore
p a r t e dimidia ramulis b revibus fil iformibus subulat is a u t multifidis dense
vesti ti p inni sque dis tichis pinnati. Pinnæ lineam dis tantes , p a t e n te s ; inferiores
1 —3-pol l icarcs , d iamet ro lineæ d imid iæ; super iores s ens im b r e vio
res ita ut pa r s pinnata c i rcums c r ipt ione ovata evadat, 1—2—3 p ec t i n
a t e - Ramuli ultimi oppos iti filiformes toretes , % — 1 poll icem longi, acuti,
al iquando apice multifidi. Suhst.antia cor iacea . Color exs ic c a tæ ru b ro -
feiTugineus, s ine ullo nitore.
Ita Harvey L o. Ex tota descr ipt ione hæc species ad Th. oppos iti fo-
iiam ita p roxime a c c e d e r e v id e tu r , u t cum hac ide nt ic am suspioarer .
Nullo vero sp ecimine viso s e p a r a t am p o n e r e debui , qu um veram Th. o p -
posit ifoliam a Harveyo cogni tam fuiss e c r ed e r e fas est.
.t t - iü
II