divisis p o tiss ira iiin dofinitiini.
cicb iis 3 e t 4 obsoi'vavi.
C y s to c a r p ia , ll a rv o y o ig n o t a , in s p o -
1. Rii. COCCINEA (H a n . in Lond. Journ. Hot. ILL. p. 4 4 8 ) p n r p n r o o -
c o c c i n e a , f r o n d e filiformi u lt r a s e ta c e a d e c om p o s i t e r am o s a ,
r am i s v irg a tis i t e r um divisis o r o c t o - p a t e i i t i b i i s , r am u l i s c y l in d
r a c e i s b asi a n g u s t a t i s a p i c e acutis.
Chrysymenia co c c in e a H a rv . l. c.
Rhabdonia coc cinea Ila r v . Alg. T a sm . n . 78. K iilz . S p . Alg. p . 723!
Hai), a d o r a s T a sm a n iæ (G u n n ! ) .
Fro n s 4—C-poll icaris , loiiu itate p e r totam lo n g i tu d in em fere penna-
pas ser ina; , cyl indracea, decompos i to ramos i s s ima . Rami virgati ramrdis
miu o r ib n s p a ten t ib u s , bas i levi te r cons t r ict i s , dein cyl indraceis , e x s ic c a -
lioiie in a-qualibus subtorulos is , uncial ibus e t brevior ibus , apice acuminat is .
Colo r c o c c in eo -p u rp u r a s c e i i s . S u b s t a n t i a memb r an a c e a .
2 . Rii. nigrescens (H a n . Alg. Tasm. n. 7 9 ) f u s c o - p u r p u r e a , e x s ic c
a t io n e n ig ro s c o n s , f r o n d e filifo rmi u l t r a s e t a c e a d e c om p o s i t o
r am o s a , r am i s v irg a tis i t e r um divisis e r e c t o - p a t e n t i b u s , r am u l i s
c y l in d r a c e is basi a n g u s t a t i s a p i c e a c u tis .
lla b . a d o r a s T a sm a n ia ; (G u n n ! ) .
AdspecLu p ot ius quam ce rto cb a ra c to r e a p ræ c e d e n te difl'ert. P ianta
rigidior e t ex s ic c a t io n e magis cont ra c ta , q u a r e graci l ior ap p a re t . Madc-
faota p ræ c e d e n tem ita æmu la tu r , u t dubium mihi vide atur an spooifioo
di s t inc ta sit. In te rn a s t r u c t u r a al iquantulum difforunt ; li lorum a d p a ra lu s
ili Rii. nigre sc ent ! mul to dens ior.
3. Rii. tenera (J. Ag. Symb. p. 1 8 ) c o c c i n e o - p u r p u r e a , f r o n d e filif
o rm i u l t r a s e t a c e a d e c o m p o s i t o - r am o s a , r am i s v ir g a tis ite r imi
d iv isis e r e c t o - p a t o n l i b u s , r am u l i s m e d i o in ilatis, basi c o n s i r i c l i s
a p i c e lo n g e a c um in a t i s .
Gigar t ina te n e r a J . Ay. l. c.
Sphaerococcus t e n e r K iilz . sp . p . 777!
ll a b . in o c e a n o a t la n t i c o ad ín s u la s li id iæ o c c id e n t a l i s , u t ad
ITayti! P o r t o r i c o ! S;t C r o ix !
F ro n s 4 - 8 p o l l i c a r i s a rad ic e fibrosa surgons , cæsp i to sa , de c omp o s i to -
ramos i s s ima , r ami s pin n a t im e gredient ibus s u r sum brovior ibus , b as i eximie
cons t r ict i s , dein s ens im inflatis, d iame t rum l iueæ fero at t inge nt ibus , apice
i te rum longe acuminat is . S u bs tant ia juvenili s eximie tenera, adul tioris
sat i s fi rma; Colo r c o c c in eu s demum p u rp u r e u s . Cys toca rpia in ramis bino
inflatis demorsa, sub - l iemi sp hoer ic e prominent ia, nucleo filis u n d iq u e am-
l i ient ibus cincto, int ra p e r i c a rp ium cellulosuni apice p e r tu sum. S p hæ ro -
s p o ræ zona t im divi sæ in ramul is nidulante s . S t r a tum ex te r iu s frondis in
juvenil i pianta unic a fere ser ie oci lularum c o n s ta t ; demura ser ie s augc ri
videntur ita u t duplici a u t triplici s t rato tubus in nonnull is c ingi tur ; fila
elongata’ ana s tomosant ia longi tudina l i ter tu b um p e r c u r ru n t .
Es t tuijus generis , ni fallor, species c e r ta. S p hæro sp o r i s no n d um
detoctis Chrysymeniam crodidi. Sed s p hæro sp o ræ zonat im divisæ! llaly-
meniam ramosiss imara S u h r . F lo ra -1840 p . 275 ad hano sp e c iem p e r t in c r e
.su.spicor. A Rbal idoiiiæ spe c iebus aus t ra la s ic i s æg c r r ime disti iigui tur, ramulis
ferma al iquantulum diversis.
4. Rii, ROlìUSTA (ürev. Alg. B r . Si/«, yi. L J / / ) fiisc e sc cn s, f r o n d e t u b o losa
iiiæq u ali liic illic c o n s t r i c t a s u iip iiin a tira d e c om p o s i t a , ramis
basi e x im i e a t t e n u a t i s a p i c e q u o a c u tis.
Dumontia robus ta Gre v. l. c .H K ü lz . S p . Alg. p . 718!
llab. ad o r a s Novæ ll o l l a n d iæ ( F r a s e r ! ) .
Frons 3—4-poll icaris , cras s i l ie p e imæ fero an s e r inæ, te ret iuscula, in-
.Tqiialis, ilio illic uemp e quas i co n s t r ic ta ot rursu.s dilatata, sulipinnatim
decompos i to- ramosa , rami.s i r r e g u la r i te r al ternis, bas i eximio cons i r icl i s
duplo tenuioribus , ap iceque i te rum longe acuminat is . Cys toca rpia exs ic cala
magnitudine seminis Sinapi s, frondi immer s a, nodose prominent ia, .sparsa,
3—4 aut pauc iora in singulis rami s obvcnieutia. Subs tant ia inemli ranaccn
gelatinosa fere Clirys. v cn t r ico sæ. In aqua turg id a e t quas i humoro repleta .
Color sordidus fuscescens .
V a r . W ig l i l i i f r o a d o c om p r e s s a , a s u bm a r g i n o d is ticlie r am o s a .
Hab. in Siiiu Ro n g a liæ (Wig lit! in Hb. H o o k e r ) .
All species d i s t incta ? in bao ta n tum vidi sp hæro sp o r a s , qu® in ramulis
super ior ibus dense dispos i tæ, bos fo re punotu la to s reddunt .
Species generis dubioe.
5. Ru .? GLOBIFERA ( L a m o u r . m s c r . ) c a u ln s c e n s , c a u le t o r d i d i c l i o -
lom o r am u l i s v e s i cæ f o rm i lm s o b o v a t i s p in n a l im o b s ilo .
Fucu.s globi ferus L am o u r . in Herb. M u s . P a r is !
Gigartina ovata L am o u r . E s s . p . 48 lab. 4 fig. 7?
Chondria uvaria ß. oliovala Ag. Sp. Alg. p . 248?
? Chrysymenia obovata S o n d . Alg. P r e is s . p .'ì9 . H a rv . N e r . a u s lr . p. n .
Gas troclonium obo v a tum K u tz . sp. p . 805?
Hub. ad o r a s No væ l l o l l a n d iæ (Mus. P a r i s i ) .
Cum Chr. uvar ia q u o ad formam ita convenit, u t vix cxlcrnis ci iarac-
Icrilms d i s t in g u an tu r ; s t ru c tu r a a u tem evid en te r divcrsæ. S t r a tum ex te
rnum frondis co n s ta t cellulis su b b ex ag o n i s satis magnis , unica ser ie
disposit is. Fil a n ume ro sa ox his immed ia t im e g r e d iu n tu r e t va c uum
frondis inler ior is o c c u p a n t ; s u n t hæ c r e t iculat im an a s tomos ant ia, ar t icúlala,
tubo interno colorato e t memb r a n a ampia byal iii a cons t i tuía . Qua ducente
s t ruc tura spccios Rhab d o n iæ videtur, f ructu ignoto.