Focus a s rle r io id e * Esper Icon. Fucor. Vol. II. pag. 78. lab. 147. — Turner Hist. Fucor. tab. 62.
P t i lo t a i-i.u9io.sa ß. a s p lr r io id r s Agardh Syuops. Alg. Scandin. (1817) pag. 39.
P t i l o t a a sp lk rio id k s AgardU Spec. Alg. (1822) png. 387.
In smu Avvalse!» ad portimi S ' P etri e t Pauli magna copia proccllis ad lillora cjicilur;
ex insulis Kurilibus adporlavil Horner ; item ad insulam Unalaschka e t Amaknak, tum
stipitibus Tbalassiopbylli Clatbri, tu in conchis e t lapidibus affixa; in sinu Norfolk ad
coloniam Novo-Archangelsk e t in ora occidentali Amcricac scplcnilrionalis loco „Princ e
Williams Sound“ diclo; ad Grocnlandiam invcnil W o rmskiold; ex oris novae Hollan-
diac australibus ad (return „Bass“ a Turnero indicalur.
Spccimina inlcrcurrunl fronde coriacea-, opaca; flavcsccnti-fusca, praeter frnctus solennes
granula in substantia pinnarum sparsa fovenlia, non male Fuco pilularia Gmclini
lab. 10 fig. 11 illustrala e t loco natali ncglccto, descriptions quoque convcnienlia.
2. P t ilo t a plum o sa . Fronde filiformi, compressa, ramosa; ramulis 2—5 pinnatifi-
disj pinnulis densis, ullimis opposilis lincaribus, nonnullis capsula tcrminatis.
F u co id e s puri-urkum b le g .v r te r plumosum Raji Synops. (1690) pag. 38 tab. 2 fig. 5.
Focus plumosus Hudson Flora Augi. (1762) pag. 473. — Flora Danica tab. 350. — Esper Icon. Fucor.
tab. 60. — Engl. Bot. tab. 1308.
S p h a e ro c o c c u s p lumosus Stackhouse Nereis Brit. (1801) pag. XXIV.
Ceramium plumosum Roth Catalecta hot. VoJ. 111. (1805) pag. 153.
Plo camium plumosum Lamouroux Essai s. 1. Thalass. (1813) pag. 50.
P t i l o t a p lum o s a Agardh Synops. Alg. Scand. (1817) pag. 39. — Lyngbye Hydroph. Dan. pag. 38;
tab. 9. — Grcville Algae Brit. pag. 155- tab. 16.
Vulgaris in oceano curopaco imprimis boreali, stipili plcrumque Laminariae digilatac
adhacrcns ; item in marc albo c l ad Islandiam, Grocnlandiam, Ganadam. I n oceano pacifico
scplcmlrionali ad insulam Silclia e t Unalaschka.
X X I. LAURENCIA.
Lamouroux'Essai s. 1. Thalass. 1813. — Grcville Algae Bnt, 1830.
CdOKDRIA Agardh. Spec. Alg. Scandi 18(7, et Spec. Alg. 1899.
Frons linearis vcl filiformis, gelalinoso-carlilaginca, rosea vcl purpurea, ramosa;1 ramis
pinnatis, enervi bus. Fructificado : 1) Sporidio pyriformia breve pedicel lata in capsulis
subglobosis, pinnis adnalis vcl in raccmulos coaccrvatis, sub gcrminalionc (L. pinnalifida)
dcorsum rostrum , sursum filamenta p lu ra , simplicia dein ramosa cmillcnlia; 2 ) Granula
temala ramulis innata.
L a u r e n c ia s p e c t a r il is . Fronde plana, lineari, versus apiccm dilatata, fastigiata,
2 5 pinnalifida; pinnis subopposilis; lobis lerminalibus obtusis, foliaceis, palulis.
I n sinu Norfolk legit Kaslalsky, ad novam Californiam Douglas.
Proxima Laurcnciae pinnalifidae. F ro n s 2—5 pollicaris, (in specimine Californico
semipedalis) cacspilosa, basi bine inde concharum fragmentis adhacrens, ramos nonnullos
cmillciis lineares, p lanos, % — 1 lineam latos, nudos, superne pinnalifiilos; pinnis iterum
simpliciter pinnatis vcl bipinnatis, palcnlibus, saepe opposilis, inferioribus plcrumque be-
betalis, denliformibus, lineal ¡bus, superioribus longioribus (2—5 linealibus), lobo terminali
obtuso, plano, non incrassalo, ulplurinium lineam lato. Fru c lu s in spcciminibus suppc-
lenlibus lantum capsuliformis observari polueral. Sporidia pyriformia, pedicellala, carneo-
rosc a , -non vaginala, intus massa granulosa repleta. Color in sicco obscure ru b e r; substantia
chartacea, rig id a , madefaelae succosa.
X X II. CORALLOPSIS.
Greville Algae Brit. 1830. in Synopsi.
Iro n s cylindracca, cartilaginea, albida, articúlala ; .arliculis ad apiccm concavis atipie
ex centro prolifcris. Fructificatio Sporidia fusccsccntia, clliptica vcl angulata in capsulis
alro-purpurcis fro n d i immcrsis, cum filis mixta.
-J- CORALLOPSIS S aLICORNIA.
Fucus S a lic o r r ia Mertens mss.
Sp h a e ro c o cc u s S a l ic o r r ia Agardh Icon. Algar. ined. (1820) tab. 8 et Spec. Alg. pag. 302.
C o r a llo p s is S a lic o r r ia Greville Algae Brit. (1850) in Synops. pag. LIII.
Ad insulam Unalaschka detcxit Chamissò, c cujus H erbario publicavil Agardh. Ad oras
Brasiliac mcridionalis see. DIarlius.
„Frondes aggrcgatac, palmares c l ultra, trichotomae; arliculis uncialibus, te rc tibus, e
basi tenuissima sensim incrassalis e t ila clavalis, apice excavalis e t ex centro emitlenlibus
plcrumque 5 novos artículos inferioribus omnino similes, supremos saepe breviores, ple-
rumque gemines, altero minori. Capsulae laterales, crebrac? hcmispliaericae, continentes
glomerulum filorum, in quo nidulantur semina fuscescehlia elliptica vcl angulata. Color
exsiccatac sordide albus, capsularum a tropurpurcus. Substantia cartilaginea. H abitus fere
Salicomiac. F ru c lu s fere u t in Sphacrococco multipartite vcl confcrvoide.“ Agardh.
X X III. GELIDIUM.
Lamouroux Essai s. I. Thalass. 1813.
Frons lmeans, compressa, cartilaginco-coriacea, plcrumque purpureo-violacca, plus
minus pinnata. Fructificado: I ) Sporidia minuta rolundata in capsulis ramulo immersis;
2) Granula aggregata in ramulis dispersa.
G e l id iu ì i corneum. Fronde cartilagineo-coraea, compresso-piana, distiche ramosa;
ramis simpliciter pinnnalis vcl bipinnatis; pinnis oppositis, patentibus, obtusis; capsulis
subglobosis, apicibus pinnularum innatis.
Fucus c o rn e u s Hudson Flor. Angl. (1762) pag. 474. — Stackhouse Nereis Brit. tab. 12. — TurnerHistor.
Fucor. tab. 257. — Engl. Bet. tab. 1970.
GblidVum co ré eum Lamouroux Essai s. 1. Thalass. (Ì813)pag. 41. — ¿reville Algàe Britan. p.ag. 141.
Sp h a e ro c o c c u s c o r r b u s Agardh Spec! Alg. (1822) pàg. 279,. — Greville Flora Edinens.is. pag. 296.
In oceano atlantico ad Brilanniam, Galliam, Hispaniam, insulam Teneriffa; in marc
mediterraneo, rubro e t nigro^ edam in oceano pacifico septcmlrionali, ubi ad insulam
Sitcha adhuc sequcnlcs duac varie tales in conchis obveniunt:
ß. lepadicola; frondibus vix seni ipoili cari b u s, pulvinalis, lincari-angustads, comprcssis,
bipinnatis ; pinnis saepe allcrnis, apice obtusis; capsulis globosis, sub àpice pinnarum in-
nads.
'f. simplex; frondibus vix scmipollicaribus, pul vinai is , filiformibus, compressiusculis,
subsimplicibus, margine ulroque dendeulis (pinnis brevissimis) horizontalibus, fruedferis
obsessis.
XX IV . G IGART INA.
Lamouroux Essai s. I. Thalass. 1813.
GtmroÄö rg ru s Martins Flora Brasil. Vol. 1 .1833.
A d r f e l t i a Fries Corpus Florarumprovincialium Succine. 1835. .
F ro n s filiformis, cylindracca, vage ramosa, cornea vel cartilaginea, purpureo-violacea,
exsiccadone saepe nigresccns vel flavo-fusccscens. Fructificatio : I ) Sporidia subrotunda
in capsulis sphaericis scssilibus; 2 ) F ila simplicia, a rdcula ta , concentrico in tubcrcula
obloitga frondem amplcclcnlia aggregata (G. plicata, G. Griffitsiae).
1 . G ig a r t in a pl ic a t a . Fronde e longata, corne a , filiformi, exacte cylindrica, ramosissima,
dichotoma ; ramis clongads, implexis, apice compressiusculis, furcads.
Fucus e o r a l l o id e s BRECTus Raji. Synops. method, stlrpium Brit. (1690) pag. 51. num. 57......
Focus TRICDOIDBS HOSTRAs a u re i cöLORis etc.Pluckenet Phytographia. Vol. I . (1691) tab. 1:84.2: ,r
Fucus p l i c ì t u s Hudson Flora Anglica (1762) pag. 470. — Gmelin Hist. Fucor. tab. 14. fig. 2. — Stackhouse
Nereis Britann. tab. 7. — Turner Histor. Fucor. tab. 180. — Engl. Bot. tab. 1089.
Fucus a lb u s Oeder FI. Danica. Vol. HI. (1770) tab. 408.
Ceramium plicatum Roth Catalecta bot. Vol. II. (1800) pag. 162.
G ig a r ti r a p lic a t a Lamouroux Essai s. 1. Thalass. (1813) pag. 48. — Greville Algae Brit. pag. 150. ,
Sp h ab ro co c cu s p l ic a t u s Stackhouse Nereis Brit. (1801) pag. XXIV. — Agardh Synops. Alg. Scand.
pag. 42 et Spec. Algar. pag. 313.
G ig a r ti r a G r i f f i ts ia e Lyngbye Hydrophyt. Danica. (1819) pag. 48. tab. 11. sec. Agardh,
A d r f e l t i a p l ic a t a Fries Corpus Florarum provincialium Sueciae. Vol. I. (1835) pag.310. - '!
In oceano atlantico ad oras Europac frcquens ; in mare mediterraneo, baltico e t albo.
Specimina ex oceano pacifico scptemlrionali ad formam communcm pertinent.
2. G ig a r t in a f a s t ig ia t a . Fronde subpollicari, cornea., filiformi, exactc cylindrica,
ramosissima, dichotoma, fastigiata; ramis palendbus, apice quidpiam incrassads, tereli-
bus, subsimplicibus.
Ad lapidcs in mare insulam Sitcha allucntc.
Proxima Gigardnac plicalac. Fronde s caespilosac, plurcs simul uno scuto ailìxae, plcrumque
pollicarcs, ra ro majorcs. Crassilics frondis cadcm ac Gigarlinae plicalac. Rami
in feriores divaricali, superiores patuli e t angulo obtusiusculo in sc rd , ultimi semper fasti-
giati. Capsulae rarissimae, in dichotomia ramulorum sessiles, globosae, magnitudine se-
minis P apavc ris, opacae, corneae, steriles. Color frondis violaceus, bine inde pallide
fuscus, apices ramulorum opaci.
5. G ig a r t in a m u r ic a t a . Fronde subpollicari, co rn e a , fasdgiata, dense inlricalo-
pulvinata, dichotoma, flcxuosa; ramis palcnlibus divaricatisve, acuminàtis, ramulos laterales
hori/.onlalcs spiniformes murièatos cmittenlibus.
Ad insulam Sitcha Iapidibus affixam legit: Kaslalsky, ad Unalaschka: Merck.
Proxima Gigarlinae ù stulalae Duby, polissimum aulem diversa fronde e t ramis duplo
crassioribus, ramulis muricalis rigidioribus. Capsulae in speciminibus suppetenlibus de-
ficiunl. Color madcfactac plantac lusco-violaceus, exsiccàtae niger. Chartac non adhacrct.
XXV. H YPNAEA.
Lamouroux Essai s. I. Thalass. 1813.
Frons filiformis, flaccida vel c artilaginea, ecostata, purpureo-violacca, exsiccatione
fuscescens, ramosissima, ramulis abbreviatis spinulacformibus saepe hispida; ramis ad
apicem nudis c l incurvis. Fructificatio : Sporidia minuta in capsulis globosis ramulo adnalis.
H y p n a e a m u sc ifo rm is . Fronde flaccida, filiformi, ramosissima; ramis flcxuosis;
ramulis abbreviatis, approximatis, patentibus, sclaccis, spinulacformibus, apice nudis,
uncinalis ; capsulis sphaericis ramulo insidenlibus.
Fucus musciform is Wulfen in Iacquin Collect. Vol. 111. (1789) pag. 154. tab. 14. fig. 3 .—Esper Icon.
Fucor. tab. 9 3— Turner Hist. Fucor. tab. 127. . ,
Fucus spiiiuLosus Esper Icon. Fucor. (1798) pag. 73. tab. 34.— Delile Aegypt. tab. 57,.
H tp h a e a musciform is e t H. sp ih u lo s a Lamouroux Essai s. 1. Thalass. (Ì813) pag. 43. 44.
S p h a e ro c o c c u s h u sc ifo rm is Agardh Spec. Algar. (1822) pag. 326.
In oceano pacifico septcmlrionali ad Unalaschka sec. Agardh ; ad novam Zcclandiam
ex T u rn e r; in oceano atlantico a Gadibus ad Brasiliam e t Indiani occidcnlalcm; in marc
mediterraneo, adrialico, rubro ; in Archipelago ad liltora Gracciae c l Asiae minoris ; in
mare nigro ad pagum Nikita.
XX V I. SPHAEROCOCCUS.
Stackhouse Nereis Brit. 1797 (nomen). — Greville Algae Britann. 1830.
Frons linearis, compressa, anceps, obsolete costala, cartilaginea, purpurea vel violacea,
exsiccatione (in S. crinito), nigrescens, distiche ramosa. Fructificatio: I ) Sporidia ovata
in capsulis sphaericis mucronalis, ramulo horizontali abbrevialo aflixis; 2 ) Anlhcridia
eia vaia, flcxuosa in tuberculis e medio frondis excrescentibus (S . crinilus). — A Gaslro-
carpeis structura interna haud differì!
S ph a ero c o c c u s c r in it u s . Fronde basi teretiuscula, mox ancipiti, superne piano-
compressa ( 1— 2 lineas lata), firma, ecostata, ramosa; ramis dichotomis, margine fimbria-
tis ; fimbriis simplicibus vel pinnatifidis ; capsulis ovalis, pelliccilatis, apice mucronalis.
•Fueus c r in itu s Gmelin Histor Fucor. (1768) pag.' 160. (Fucus crinatus) tab. 18. fig..2. —Turner Hist.
Fucor. tab. 12)5. — Agardh Algarum Decades I. num. 5.
S p h a e RococG’ù s CRiHiTus Agardh Spec. Algar.(Ì822) pag. 275. — Greville Algae Britan, in Synops.
Ad littora Kamtschatica lcgerunl Steller, H o rn e r e t Tilesius. Obvenit quoque in mare
Ochótensi secundum specimina in Herbario Acad. Sc. Petropoli asservata.
X X V II. CHONDRUS.
Stackhouse Nereis.Brit. 1797. pag. X V . — Lamouroux Essai s. I. Thalass. 1813.
Fro n s superne dilatata in laminam complanalam, cnervem, dicholomam, carlilagincam,
atrorubram v d fuscesccntem. Fructificatio : Sporidia minuta cum anthcridiis implicai is,
apice clavatis mixta, receptaculis hemisphaericis vel ovalibus inserta, in disco frondis
sparsis, sessilibus vel brcvepediccllatis ; 2 ) Fila abbreviata, liqearia vel oblonga cum gon-
gylis ovalibus e l sphaericis mixta in media frondis substantia nidulantia.— Iridcae proximo
aflinis.
I . Ch o n d r u s c r i s p u s . Fro n d e cartilaginea, plana, dichotoma, Iacvi, crispato-undu-
|a la ; scgmcnlis lineari-cuneiformibus; receptaculis in disco frondis scssilibus, sparsis,
hemisphaericis, dein concavis deciduis.
Fucus memb rah a ceu s c e r a h o id e s etc. Raji Synopsis stirpium Brit. (1690) pag. 44. num. 16. 17.
Fucus c ris p u s Linné Mantissa plant, prima. (1767) pag. 134— Turner Hist. Fucor."tab. 216 et 217. —
Engl. Bot. tab. 2285.— Stackhouse Ner. Brit. pag. 63. tab. 12.
Fucus GERAROIDES Gmelin Histor.. Fucor. (1768) pag. 115. tab. 7. fig. 1.—Espcr Icon. Fucor. tab. 98. fig.
1. 2. 3. non Linné, Turner et Wahlenberg.
C n o k d ru s c r is pus Stackhouse Nereis Brit. (1801) pag. XXIV.—Lyngbye Hydrophyt. Danica pag. 15.
tab, "5. —Greville Algae Britan, tab;. 1:5. '
Fucus la c e r u s Stackhouse Nereis Brit. (1801) pag. 50. tab. 11,.
Fucus p o ltm o rp h u s Lamouroux dissertât. (1 ¿05) cum icone, exclusa serie quarta et tab. 8. fig! 19.
U lv a c ris p a De Candolle Flore Franç. (1805). Vol. II. pag. 13. excl. var. '
Ch o n d ru s p o ltm o rp h u s Lamouroux Essai s. 1. Thalass. (1813) pag. 39.
S phaerococcus crispus Agardh Synops. Alg. Scand. (1817) pag. 24.
, Vulgaris in oceano Europam imprimis borealem allucntc; ctiam in oceano pacifico sep-
temtrionali.
2. C h o n d r u s m a m ìl l o s u s . Fronde cartilaginea, margine revoluta, dichotoma, ma-
millosa e t tuberculosa; segmentis elongalo-cuneiformibus; mamillis fructiferis frondem
utrinque investicnlibus, sphaericis lincaribusve, brevcpcdunculalis.
Focus h um il is d ich o tom u ssm em b rah ac eu s etc. Morison Histor. plant. Vol. Ill, (1683) pag. 646. Ser.
15. tab. 8. fig; 13.
Fucùs c e r a h o id e s var. 8. Gmelin Hist. Fucor. (17.68) pag. 116.
Fucus; c R r a ro id e s var. $. Lightfoot Flora Scotica. Vol. II. (1777) pag. 916.
Fucus c a r a l i c u l a t u s var. (ï. Hudson Flora Angl. Edit. H. (177?) pag. 583.
Fucus m am ìllo su s Goodcnongh and Woodward in Linn. Transact. Vol. n i.fl797) pag. 174.—Turner
Histor. Fucor. tab. 218. — Engl. Bot. tab. 1054. — Esper Icon. Fucor. tab. 122.
F u c u s a lv e o l a tu 's e t F. c a r a li .c u la tu s Esper Icon. Fucor. tab. 70.
Cd o h d ru s m am ìllo su s Stackhouse Nereis Brit. (.1801) pag. XXIV. — Greville Algae Brit. pag. 127.
FucuS p o ltm o rp h u s Lamouroux dissertât. (1805) quarta series tab. 17. fig; 37 et tab. 18. fig. 38.
U lv a c risp a var. 8. De Candolle Flore Franç. Vol. II. (1805) pag. 15.
S p h a e ro c o c c u s m am ìllo su s Agardh Synops. Alg. Scand. (1817) pag. 2 5 .- Lyngbye Hydrophyt. Dan.
pag. 14. tab. 5. ■ - J
In oceano atlantico ad Europam, Canadam e t B rasiliam; in oceano pacifico ad insulam
Sitcha c l Unalaschka.
F. GASTROCARPEAE.
- Greville Algae Brit.1830.
U lv o id eo -F lo rid e ae Agardh Spec. Algar. 1893..
Plantae marinae, rcgionum imprimis frigidairmi hemisphaerii utriusque incolae, hu-
miles ta ro ultrapedales, inlcrdum parasiticae, roseac, purpurcae aut v io la c e n e , erasso-
g c lalin o sac vcl rarius tenui-mcmbranaccac. Radix discoidea, rarius fibrosa repens. Frons
subsimplex, scssilis (in Constanlinea stipiti ramoso adnata), aut túbuloso-saccata e t saepe
prolifera, aut in laminam cncrvcm subinde latissimam cxpansa. Fructificatio completa:
S poridia, gongyli c l fila (anlhcridia) interna au t extranea.
X X V III. CONSTANTINEA.
Fuci spec. Gmelin Hist. Fucor. 1768.
H a ltm eh ia e spec. Agardh Spec. Alg. 1893.
I r id a e a e spec. Greville Alg. Brit.1830.
Stipes diramificatus, corneus, anulatus; anulis superioribus laminigeris. Laminae
crasso-carnosác, rubro-sanguincac, exsiccatione fuscac, suborbiculatae, inferiores in centro
stipite perforatae, terminales pcltalac, intcgrac vcl fissae. Fructificatio: I ) Sporidia
in lomentis ovalibus superficiei laminae aflLxis e t inter antheridia creberrima abbreviatoclavala
dispcrsis (C. sitchcnsis); 2) Gongyli rotund! vel ovale*, vaginali, cum fili* lineari-
bus arliculatis mixli, intcrnam laminae c l stipili* substantial» efficiente*.
1. C o n s t a n t i n e a R o s a m a r in a . Tab. XXX. Stipile ramoso, anuli* disimele pro-
minenlibus in arliculos diametro duplo longiores diviso; ramis alterni* vel unilateralibus,
apice laminas plerumque plurc s, orbiculares, pel la t as, mox ad centrum usque laciniata*
fovenlibus.
Fucus R o sa ma rih a Gmelin Histor, Fucor. (1768) pag. 102. tab. 5. fig. 2 et 2. a. — Agardh Spec. Algar.
pag. 190 sub Delesscria.
Spccicm rarissimam tandem recognilam ad lillora Kamtschatica circa promonlorium
Lopatka detexit S te lle r, specimina pauca meridiem versus a porto 8 ° P e tri e t Pauli
invcnil Mertens.
Stipes semipedalis e t minor, lapidibus vel conchis affìxus, jam a basi ramosi»; rami
adscendentes, flexuosi, n u d i, te rc le s, 1— 2 lineas la ti, in sicco corne i, secus carnosi e t
inlus cartilaginei. Anuli plerumque 2—5 lineas a se inviccm distant, in ramulis juniori-
bus densiores sunt. Rami diversi qùoad laliludinem non multum inter se differunt e t paulo
tantum tenuiores su n t, quam stipes primarius. Laminae versus apicem ramulorum sitae
vcrticillatac; suprema orbiculata, diametro 2 pollicaris, peltata, laciniata, laciniis 5— 6
obovalo-spalbulalis ; centrum sive locus inscrlioni stipi tis oli versus plerumque protubera
n t» regulari convexa, imprimis aulem consiste«lià molli, cerca insignilur. Sub lamina
terminali hac verticilli 2—4 laminarum pari modo ad ramum fere fissarum dispositi sunt,
quibus deciduis caulis nudus e t anulatus cflìcilur. Raro e t rarissime peltae terminates
orbiculatae atque inlegrac mancnt. Substanl ia laminae facile dilaccrandae carnoso-coria-
c e a , in sicco rigida multo tenuior'c l fragilis. Color fusco-sanguineus.
2. Con sta n t in e a s it c h e n s i s . S tipite ramoso, dichotomo, anulis prominentibus
in arliciilos diametro fere quadruplo longiores diviso ; ramis lamina orbiculari, peltata,
integra tcrminatis.
Ad insulam Sitcha.
Omnibus partibus praecedente major. Lamina solitaria in apice ramulorum suborbicu-
lata, diametro 4 — 6 pollicaris, integra , aetale tantum provectiori vario modo laesa; inter-
dum juveniles occurrunl laminae, 8 lineas in diametro latac cum majoribus.
. Tcrtia Iiujus generis species: Constanlinea reniformi*; stipile parce ramoso; anulis
obsoletis; ramis ullimis oppositis, apice lamina reniformi integra tcrminatis. — In mare
mediterraneo rara. Hue saltern pertinet Halymenia reniformi* Agardh Species Algarum
(1822) pjig. 2 0 1 sccundum dcscriptioncm spcciminis Herbarii Mertcnsiani.
XXIX. IRIDAEA.
Bory in Diet, class. M ist. nat. V o i IX. 1896.
Lamina carnosa vel gelalinoso-carlilaginca, plerumque purpurco-sanguinca, exsiccatione
interdum fusccsccns, basi anguslata scssilis, mox dilatata, ovata, cordata, reniformis vel or-
. bicularis, integra, scrius irrcgularilcr fissa. Fructificatio: 1) Sporidia rotunda vcl angulata
in soros substantiae mediae laminae immersos coacervata (Sporogonema) ; 2) Gongyli subro-
tundi, plerumque vaginali, cortici contigui (Iridcac propriae) vel undique dispersi e t nudi,
helcromorpbi, inlcrdum fila emmilleules (Gongylogonema); 5 ) Granula carnea vel fla-
vescentia, stipitata, solitaria, sub epidermide laminae posila (Serangogonema); 4 ) Fila
(antheridia) clavata, inarticulata, intricato-flcxuosa vel recla linearia, nuda vel vaginata,
substantial!! mediani laminae eflicicnlia.
§. 1. IR ID A E A . Sporidia definita nulla. Gongyli disimeli,plerumque vaginali, globulis
colorantibus periphericis contigui. F ila abbreviata, re c ta , mediam laminae substantiam
formanlia. — Hujus seclionis : Iridaca edulis Bory et sequcnles duae.
1 . I n i da e a o r n a t a . Tab. XX X I. Lamina pergamena, margine in appcndiculos lami-
naeformes obovalos, basi angustalos fissa e t partita ; appendiculis simplicibus vel (amplio-
ribus) ilerum divisis, cinnamomeo-vinosis e t sanguineo-suffusis; soris bine inde sparsis,
diametro linealibus, nodulos parum elevatos, inde terminates, pcrsislenles referent ¡bus.
Ad Ramtschatka lapidibus e t conchis aflìxa.
I n sicco fragilissima, humefacta parum intumescit et flexibilis fit, chartae non adhacrct.
Obvenit eliam lamina triplo majore ac specimen tab. XX X I depictum.
2. I r io a e a l a c e r a . Lamina ten u i, membranaceo-chartacea, reniformi, dcorsum in
stipilem 2—5 linealem abicnle, laciniata, erosa et perforala, sicca badia e t hinc inde san-
guinco-suffusa ; soris imprimis ad apicem Iaciniarum evoluì is , sparsis, minulis, fuse is,
elevatis, convcxis, determinai is , lamina perforata exciduis.
In oceano pacifico septemlrionali.
Laciniae frondis semipedales, foramina rotunda vel ovalia, in diametro 1—4 linealia.
§. 2 . SPOROGON EM A . Sporidia densa in soros aggregala, substantiae mediae laminae
immersa. Gongyli nulli. Fila abbreviata, cuneala, plcrumque flexuoso-inlricata.— Huic
sectioni etiam adnumerandae : Iridaca cordata Bory, Iridaea orbi iosa Suhr e t, u t videtur,
quoque Iridaea Radula B ory, in qua sporidia nondum observavimus.
5. I r id a e a l il a c in a . Lamina crassa, chartacea, orbiculari vcl reniformi, irregulariter
divisa e t lobata, margine eroso-dentata, lilacina, hinc inde sanguineo-suflusa; soris in
tota lamina dense aggregalis, minulis, omnibus coccineis, parum elevatis, circumscriplis,
persistenlibus.
Ad littora Americae boreali-occidentalis.