à
1 6 . A t r o k u b e s c e n t e s molles purpurascentes deliquescenti-dicho-
tomoe ramisque lateralibus densius divisis subfastigiatis fr u c tife
r is obsitæ, articulis lQ— l2— 14-siphoneis midis aut inferne
subcorticatis.
P. A R E N A R IA .
P. U R B A N A .
P. P A N IC U L A T A .
P. A N IS O G Ü N A .
P. T E K Ü I S T E IA T A .
100. P. A T R O R Ü B E S C E N B .
101. P. C O R Ï J I E I F E R A .
102. P. B I P IN N A T A .
1 7 . B y s s o i d e æ p in n a tim decompositæ, ram is q u e q u a si heterogen
e is la te ra lib u s p e n ic illa tæ , r am u lis m on o siph on iis c o lo ra tis
m o llis s im is , a r tic u lis e c o r tic a tis 1-siph on e is.
103. P. SOLIERII. 10,5. p. AUSTRALIS.
1 0 4 . P. B y s s o id e s .
1 8 . C a n c e l l a t æ p in n a tim decompositæ, ram isq u e homogeneis a t
b re v io rib u s m o llibus, a u t sp inæ f o r m ib u s mun itæ , a r tic u lis ecortic
a tis 7 — 8 siphon e is. A u s tr a la s icæ .
106. p. S P IN O S IS S IM A .
110. P. C A N C E L L A T A .
107. p . D E C I P IE K S .
P. A T E R E IM A .
108. p. F R U T E X .
111, P. F U S C E S C E N S .
109. P. N IG H IT A .
1 9 . S U B U L IE B R Æ subpinnatim decompositæ, ramulis homogeneis
a t brevioribus suhulato-spinoeformibus munitæ, articulis ecorticatis
12-siphoneis. Atlanticæ et marium adfluentium incolæ.
112. P. S IM Ü L A N S .
113. S U B Ü L I F E R A .
114. p. F E B O X .
2 0 . N i g r e s c e n t e s subpinnatim decompositæ, ramis homogeneis
mollioribus virgatæ, articulis V2— lG— 2Q-siphoneis nudis aut
corticatis.
f Ecorticatæ.
115. P. A T R IC A P IL L A .
P. T E N E B R O S A .
118. P. G a u d i c h a u d i i .
116. P. O P A C A .
117. P. N IG R E S C E N S .
f f Corticatæ.
119. P. C O M P L A N A T A .
V. Species inquirendæ.
S p e e ie s v id infra.
I. P t i l o s i p h o n i a .
Speeies nanæ, nunc fronde majore præditoe, totæ adnatæ repentes,
aid a f h primario decumbente et radicante erectiusculæ,
aut omnmo erectæ, distiche pinnatæ aut p in n is bifariam egredientibus
secundatis quasi semipinnatæ, articulis nudis aut corticatis
4—8—IG-siphoneis.
1 . D e n d e i t i c æ nanæ parasiticæ, fronde distiche pin n a ta decumbentes,
pagina adpressa radicantes, p in n is adpressis aut
adscendentibus^ articulis 4— ^-siphoneis nudis.
1 . P o l y s . C o l e n s o i (Hoolc. ct Harv. mscr.) tota decumbens ab in feriore
pagina adpressa radicans, disticbe pinnatim decom-
posita, pinnis ad geniculum quodque secundum alterne
egredientibus, pinnis compositis pinnulisque simplicibus
subulatis utrinque alternantibus, articulis 4— 6-sipboneis
.diametro subduplo brevioribus, f r u c t ib u s ................
P.ylysipbonia spiiiifera Kütz.?
Hab. in Sargasso parasitica ad oras N ovæ Zelandiæ (Colenso!).
Frons pusilla, secus l'rondem Sargassi tota distiche expansa et inferiore
pagina radicans, radiculis crassis iiitestiniformibns apice obtu-
,5is. Pinnæ pinnnlæqiie ad genicnlnm quodque seciiiiduin egredientes,
Ita dispositæ u t piniiulas simplices u trin q u e singulas invicem alternas
pinnæ compositæ totidem invicem alternæ inseqiiuntur; lias,
biiiis articulis interjectis, novum par pinnularum. Pinnulæ pinnellæ-
que patentes simplices subulatæ obtusiusculæ. Articuli diametro duplo
breviores, a superficie visi siphones 2 æque latos ac loiigos monstrantes.
Fruc tu s non vidi.
Crescendi modo cum P. dendritica conveniens, distat ramificatiola.
P. P R O S T R A T A (Huvv. Mar. Bot. of West. Austr. n:o 90) "parasitica
omnino prostrata, discis rameis prorepens, ru b ra siccitate fuscescens;
frondibus pusillis ( 1 - 2 uncialibus) e centro radiantibus
subparallelis secunde ramosis; ramis filiformibus simplicibus re-
pentibus apice involutis; ramulis liberis paucissimis brevissimis;
articulis 4-slphoneis diametro subduplo b revioribus; ceramidiis
ovatis longiuscule pedunculatis (ramos v. ramulos terminantibus).”
Hab. in Oceano australi ad littu s Fremantle, frondes Zonariæ ni-
grescentis perrcpens et filis sæpe omnino obducens.
Species mihi ignota. E x descriptione P. Coleiisoi proximam ju -
dicavi.
Inter Species Australiæ a Harvey distribuías P. p rostratam non
video.