185 



Stichidia niimitaj fasciculata, folium termiiiaiitia^ rarius iiervo 

 medio insidentia, duplici serie sphaerosporas demuin triangula- 



tim divisas contineiitia. 



Alga Australasiaca atro-fusca*). 



1. Pol^phaciiiti prolifernm Agardh; spec. I. p. 106. 



Osnmndaria prolifera Lamourx. ess. p. 22. 1. 1. f. 4. 5. 6. 



Ad litus austro-occidentale Novae Hollandiae. Herb. Preiss, No. 2591 et 2592. 



Spithamea. Radix scutata, pollicaris, niulticaulis. Caules teretiusculi, 

 subpolUcares, pennae anserinae crassitie, ramis paiicis, alternis, conformibiis, 

 brevibus, mox in frondeni foliiformem, e disco proliferam abeuiitibus. Folia 

 plana, linearia vel sublanceolata, I-3-poHicaria, 2-3 lin. lata, nervo medio, 

 crasso percursa, marglne integerrima vel serrato-dentata, undique verrucis 

 luinimis, fuscis dense obtecta. Verruclie pedicello brevissimo insidentes, spi- 

 nulis numerosis, simplicibus, ramosisve, articulatis constant. Stipes verru- 





carum teretiuscaUis, angiilatus vel subconipressus, frondi conformis, e celhi- 

 lis minutis corticalibus, majoribusque interioribus constituta. Stichidia lan- 

 ceolata vel linean-clavata, pleriimqne folium terminantia, rarius in nervo 

 medio lateralia, semper aggregata, vix lineam longa. Sphaerosporae sphae- 

 ricae, ^hyalinae. Color frondis fuscus, siccatae atro-fuscus, 



Frons in omnibus spedminibus a nie examinatis e nervo medio, nun- 

 quam e niargine prolifera, folia vel margine integerrima vel evidenter serrata, 

 nervus medius crassus semper inconspicuus, nunquam denudatus ut pingit 

 et describit Lamourouxuis. 



Genus dubiae afBnitatis. 



^HAMNOCLONIUM Kiitz* phycoL gen. p. 392. 



Sond. in Mohl et Schlechtend. bot. Zeitg, 1845. 

 p* 56* Poljphaci species J. Agardh. in Symbol. 



pag. 3. 



Frons cartilagineo - cornea compressa enervis linearis ra- 

 mosa vel sursum explauata, verrucis stipitatis spinulosis vestita. 

 Cellulae interiores perenehymaticae angustissimae. Verrucae 

 spinulaeque frondi conformes. Fructifieatio • • . . 



Algae Australasiacae^ marinae, fuscae vel virideSy caule- 

 scentes. 



1. Tliamnocloniiim flabeUiforme Sond. viride, sti- 



pite tereti crasso demuin nudo, ramis compressis basi ver- 

 rucis brevibus spinulosis obsitis, apicem versus in ramellos 

 elongatos filiformes intertextos frondem flabellatam efiFor- 

 mantibus solutis. Sond. L c. 



Ad litus occidentaie Novae Hollandiae. Herb. Preisft. No. 2619. 



Frons subspithamea. Caulis pollicaris vel idtra, duas lineas crassus, 

 tereti usculus,rigidus, corneus, albescens, apice in ramos ramulosque tenues, fla- 

 bellum planum, apice subplicatnm, crispatura, reticulatum, viridem, 4-5 polllces 



1 



1 



*) Poiyphaeum (fichotomum J. Agardh. est Thamnoclonil species ^ Thamuucl. hir 

 futurn Kiitz. 



