12 Eu-Floridez, Delesseriez, Pteridium. 
sunt diametro duplo longiores; extra has triplex series cellularum 
angulatarum in segmentis p:senultimis adest et marginalis constat 
cellulis longitudinaliter elongatis et seriatis. In P. Baerii eedem 
cellulze costales adsunt at breviores et magis irregulares (in planta 
Ochotensi) plures series cellularum angulatarum costales cingunt 
et marginales fere verticales. In JP. corgymboso cellule costales 
cum ceteris conveniunt. Clarus Ruprecht sporangia (eystocarpia) 
marginalia longepeduneulata, apice demum longe subulato-caudata 
et tetrasporangia in soros elongatos infra apicem 2-3-fidum seg- 
mentorum collecta descripsit. 
Pteridium corymbosum J. Ag. Sp. III, 3 (1898) p. 225 (nomen), De- 
lesseria corymbosa J. Ag. Sp. II, p. 684, Epicr. p. 482, Delesseria 
DBaerii var. corymbosa hosenv. Groenl. Havalger p. 806. — Fronde 
subfiliformi, dichotomo-corymbosa, segmentis superioribus lineari- 
bus acuminato-obtusiusculis supra axillam leviter incurvatis mar- 
eine integerrimis; fructibus ignotis. 
Hab. ad oras Groenlandie (VaHL). — Frons 4,5-10 em. longa, 
1,9 millim. circiter lata, decomposito-dichotoma. Segmenta inferiora 
magis distantia et in ramo principali alterna, superiora densius 
adproximata et ita breviora ut ramulus quisque eximie corymbosus 
evadat. Ramulorum infima segmenta extrorsum s:pe subseeundata, 
superiora regularius diehotoma, supra axillam leviter incurva, 
omnia linearia, suprema obtusius aeuminata. Sub microscopio cel- 
lulzte medi: longitudinaliter disposit:e apparent, ceteris autem con- 
similes, rotundato-angulatz. Color pulchre coccineus. 
. Pteridium angustissimum (Griff) J. ^g. Sp. IIL, 5 (1898) p. 225 
(nomen, Delesseria angustissima, Griff. in Harv. Phyc. Brit. t. 89, 
J. Ag. Sp. II, p. 686, Epicr. p. 482, Kuetz. Tab. Phyoc. XVI, t. 16, f. /-7, 
Fwcus alatws 4. angustissimus 'Turn. Syn. Fuc. I, p. 145, Hist. 
tab. 160, f. k-/, Delesserza alata y. «ngwustissima Ag. Sp. Alg. I, 
p. 179, Syst. p. 250, Hypoglossum  angustissimum  Kuetz. Sp. 
p. 877, Gelidium? vrostratum Gritf. in Harv. Man. p. 82, Fwueus 
alatus junior Gmel. Hist. tab. 25, fiy. 2. — Fronde lineari anci- 
pite, alis destituta, dichotomo-pinnata, segmentis superioribus sub- 
cuneato-linearibus obtusiusculis margine integerrimis ; cystocarpiis 
in phyllis axillaribus segmentisque terminalibus immersis, rostro 
supereminente duplo crassioribus longitudine fere zequalibus 5 soris 
in phyllorum axillarium segmentorumque terminalium parte supre- 
ma immersis. 
Hab. in oceano Atlantico ad oras insularum Anglix (BRODIE, 
1266 


