Conjugatse, Desmidiacefe, Cosmarium. 98t 



tumore non multo elevato, subcirculari vel eliiptico, granulato, 

 granulis in series 5-6 horizontales subconvergentes vel irregula- 

 riter ordinatis, ad marginera versus subtiliter granulatis, granulis 

 radiatim concentrice dispositis, in seriebus 2 interioribus (et ad ba- 

 sim semicellulse) singulis, in ceteris binis; e latere conspectis plus 

 minus ovatis, a vertice visis ellipticis, apicibus late rotundatis, 

 medio quam levissime tumidis; latitudine apicis 15-20 /j.. ; pyrenoi- 

 dibus siugulis (?). 



Hab. in insulis Spetsbergensibus (Nordstedt); in Groenlandia 

 (Boldt); etiam in Brasilia. u An sectioni secundse adscriben- 

 dum )). — Var. validius Nordst. Freshw. Alg. of N. Zeal. and 

 Austral. p. 49, tab. 5, f. 10, Botaniska Notiser 1887, p. 160, 

 Cosmarium speciosiim var. inflaium Mask. N. Z. D. Add. p. 240, 

 tab. 24, f. 6?: paullo majus; semicellulis tumore basali majore 

 (subelliptico) granulis in series (circ. 9) verticales (sed nuUas ho- 

 rizontales) dispositis ornato, crenis lateralibus 9-10; pyrenoidibus 

 binis (?). Ad « Waimakariri River, Arthur Pass, lacum Lyndon, 

 Auckland, Omatangi » in Nova Zelandia (S. Berggren). — Cosma- 

 rium binum Nordst. valde affine est, sed praicipue diflfert angu- 

 lis inferioribus semicellularum raagis rotundatis, apice 6-crenato, 

 omnibns granulis marginalibus binis. Dimens. 68-84 ^ 47-53, lat. 

 isthm. 22 p.., crass. 33 p.. 



127. Cosmarlum porrectum Nordst. Desm. Brasil. p. 207, t. III, f. 2364 

 28, Hedwigia 1870, p. 174, De Algis nonn. mus. lugd. bat. p. 4. 



— Mediocre, 25-28 a. crassum, circiter tam longum quara latura, 

 61-69 'i^ 56-71, quadrangulatum, utroque polo retusura, lateribus 

 repandis, incisura mediana lineari, angusta, isthmo 12-14 jj.. lato, 

 a latere conspectura oblongura, late sinuatura ; semicellulis tetra- 

 goniis, basi paullo angustioribns, sursum dilatatis, angulis inferio- 

 ribus subrectis, superioribus subproductis, rotundato-obtusis, late- 

 ribus leviter sinuatis, a vertice visis oblongis ; raerabrana dense 

 granulata, granulis fere in quincuncem ordinatis; pyrenoidibus 

 binis. 



Hab. ad « Lagoa Santa » in Brasilia America^ australis (War- 

 ming), in Utr icularia flexuosa ex insula Java (Herb. Blume). 



128. Cosmarium rectanguiare Grun. in Rabenh. Fl. Eur. Algar. III, 23G5 

 p. 166, Cosmarium goilandicum Wittr. Ora Gotlands och Oe- 

 lands Sotvattensalger p. 60, t. 4, f. 14, Cooke Brit. Desm. p. 88, 



t. 37, f. 4. — Mediocre, 20-24 u. crassum, paullo longius quam 

 latius, 37-45 =; 30-36 , subquadratura, sinu lineari angustissirao, 



