Eu-Florideae, Grateloupiaceae, Polyopes. 1595 



sepai'iitis aggregata. Cryptai fcrtiles infra stratum periphericuin 

 excavatte, per canalem elongatum, seccdentibus filis periphericis 

 formatum, cum ostiolo superficiali communicantes. Nucleus sim- 

 plex, semiambientibus filis strati intcrioris suspensus, pyramida- 

 tus, carposporas in plexu filorum a puncto scu placentula fasci- 

 culatim egredientium evohitas admodum minutas, fovcns. Nema- 

 thecia a filis vcrticalibiis strati exterioris aliquantuhim prolongatis 

 formata, in alterutra pagina subcanaliculata maculas lincares elon- 

 gatas, margine sterili cinctas, formantia. Tetrasporangia elongato- 

 oblonga, cruciatim divisa, inter fila dense stipata nemathecii ni- 

 duhiiitia. J. Ag. op. cit. 



1. Polyopes constrictus (Turn.) J. Ag. Act. Holm. Oefvers. 1819, p. 86, 2513 

 Sp. II, p. 239, Epicr. p. 148, Florid. Morphol. tab. 6, fig. 1-11, 

 Fucus consfricfus Turn. Hist. Fuc. III, p. 40, tab. 152, Sphcero- 

 coccits consfricfus Ag. Sp. Alg. I, p. 252 et Syst. p. 217, Gefi- 

 dium constricfiun Kuetz. Sp. p. 767, Cho7%drus scuteffatus Kuetz. 

 Tab. Phyc. XVII, tab. 56. — Frondibus a callo radicali expanso 

 plurimis, compressis linearibus, repctite dichotomis flabellato-fa- 

 stigiatis, hic illic stricturis parum conspicuis inaequalibus, seg- 

 mentis suprerais strictura subseparatis cystocarpia immersa ge- 

 rentibus. 



Hah. in mari australi ad insulas «Kent» prope Novam Hollan- 

 diam (Brow^n), ad Caput Bonae Spei AfriciB australis (Laland, 

 Harvey, Pappe). — Frons 8-15 cm. longa, infernc teretiuscula, 

 pennam columbinam vix crassa, superne compressa, marginibus 

 rotundatis, 2 mm. circiter lata, linearis, hic illic constricta, per 

 dichotomias numerosas subregulariter fastigiata, apicibus demum 

 abrupto-truncatis, a truncatura prolificantibus, prolificationibus ge- 

 minis aut raro ternis, initio rotundatis capsulas a^mulantibur,, sen- 

 sim prolongatis et formam frondis recuperantihus. Macuhe fertiles, 

 in quibus cystocarpia adproximata evolvuntur, in latere plano fron- 

 dis subelevatsB, rotundatae; cystocarpia segre, nisi lente adspecta, 

 observanda, supra superficiem parum elevata. Nemathecia tetra- 

 sporangiorum maculas lineares, margine sterili utrinque cinctas, 

 apicibus rotundatas, efQciunt. Color purpureus. Substantia firma, 

 subcarnosa. Specimina minora qusedam ex littore Americae prove- 

 nientia memoravit jamdiu J. Agardh, verisimillime ad aliam spe- 

 ciem pertinentia; hsec tum e Terranova a Delapylajc, tum ad littus 

 Californifc a Beechey collccta dicuntur. 



