Hniif!;ioi(lesL', Baiio:iaee«, Porplixr.a. 13 



17. Bangia biseriata Menc.uh. iii Giorn. 'roscjMi. nicd. Kis. e Nat. T, 



n. 2, p. ;') ost. (locontc (^l. Knctzin;^ Sp. Al^^ar. p. MOl, rus oinnino 

 alicna. 



PORPHYRA Ag. [1824] Syst. p. XXXII, emend. {FAy m. porphyrns pnr- 

 pureus), Kuetz. Sp. p. (I!)!. .1. A,u. Till Aljj;ern. Syst. VI. p 88, 

 Ardiss. Phyc. Medit. 1, p. 408, Jancz. Et. anat. sur les Porphyra 

 in Ann. Sc. Nat., Bot., 5 st^u-., T. XVII (1873), p. 241, Ilischawi Entwik. 

 Porphyra leucosticta (1873), Engl. & Prantl Natiirl. Pllanzcnlani. 141, 

 p. 311 ex parte, Ulo(U sp. auct. veter., G. Olivi DeU' Ulva atropurpu- 

 rea, 3 Ta,v. (in Saggi scientif. e lett'3r. deirAccad. di Padova III, 1 

 (17'J4), p. 144-154). — Thallus erectus, foliaceus, planus et tenuis, 

 stepe margine undulatus, integer lobatusve aut laciniatus, disco ba- 

 sali affixus, basi substipitatus. Structura monostromatica Fructi- 

 ficatio ut in genere Bangia. P^ructus 8-pIuri-cellulares. 



I Species epipliyticse aut epizoae, colore coccineo-rosefe. 



1. Porpiiyra COCCinea J. Ag. Nov. Fl. Suec. (1836), p. 6 (absque de- 13 

 scriptione), Till Algern. System. VI, p. 56, tab. II, f. 41-43, Aresch. 

 Phyc. Sc. Marin. p. 181, t. I, D (sect. transvers.), Kuck. Bemerk. 

 mar. Alg. von Helg. II (1897), p. 390, fig. 13-14, Porphyra mi- 

 niina Crouan in Desniaz. Crypt. de Fr. II. ser., n. 612, Fl. Finist. 

 p. 132, Porphyra delicatala Welw. Phyc. Lusitana n. 293. — 

 Fronde circa basin vix conspicue umbilicatam subsessili margini- 

 busque involutis initio subcucullata, demum expansa erectiuscuhi, 

 orbiculari-ovali, marginibus undulatis nunc crispatis, endochroma- 

 tibus initio angulatis, demum oblongis, snepe binatis, rarius 4-natis, 

 interstitiis limpidissimis endochromata crassitie haud a3(![uantibus, 

 Hah. in matricibus variis profundioris maris crescens e. gr. in 

 frondibus Chondri crispi, PhyllophorcB rubentis, Desmaresticv 

 aculeatcc, Potyidis rotundi, GracitarHm nec non in Sertulariis 

 ad oras Bahusiae (J Aga.rdh, Areschoug), Foeroarum (Rostrup), 

 insula3 Helgolandise (Kuckuck), Gallise ad «Brest». (Crouan), An- 

 gliie (HoLMES, Batters); in Tago salso Lusitaniae (Welwitsch). 

 — Frondes s;iepe in eadem matrice plures et evolutione varia 

 donatoe, tenuissim^e, rose^e, nan^e , dein 2-5 cm. altye, singula? 

 primitus laminam sistentes hemisplifericam, dein fere cucullatim 

 involutam, marginibus sursum liiantibus, denmni expansam plus 

 minus undulatam margineque crispatam. Structura monostroma- 



