115 



filaments branch laterally from the subterminal cells or by snbdichotomous division 

 of the terminal cell (fig. 42 H). The cells are somewhat various in shape, usually 

 longer than broad, and contain a stellate chromatophore with central pyrenoid which 

 is usually situated in the median line of the cell, sometimes however nearer to the 

 one side of the cell. The hairs appear in various quantity, sometimes already in 

 the parenchymatous stage (fig. 42 A). The erect filaments, if they are not entirely 

 wanting, appear in 

 rather small num- 

 ber spread on the 

 disc; I have found 

 them one to three 

 cells long, scarcely 

 4/i thick. The spor- 

 angia are placed di- 

 rectly on the basal 

 disc or terminal 

 on the erect fila- 

 ments ; they were 

 not very numerous 

 in the specimens 

 examined. 



The species is 

 easily distinguish- 

 able from all other 

 species by the char- 

 acteristic disc and the position of the sporangia. It has been found in August and 

 September in depths of 7,5 to 11,5 meters. 



Localities. Km: BH off Gjerrild Klint. Sa: AH' by Fyens Hoved ; MQ, S. of Samsa. 



12. Chantransia polyblasta sp. nov. 



Thallus csespitulosus. Pars basalis e filis repentibus, ramosis, initio saltern 

 inter se discretis, constructa. Spora germinans dissepimento verticali diametral! 

 in duas cellulas aequales dividitur, quarum utraque filum repens procreat. E 

 filo primario lateraliter fila repentia et sursum fila erecta numerosa per totam lon- 

 gitudinem egrediuntur. Fila erecta usque ad c. 270 /^ longa, maxima ex parte brevia, 

 longiora ramosa, ramis ramulisque numerosis in quoque articulo singula vel bina, 

 ramis majoribus eodera modo ramosis. Pili hyalini apicibus filorum et ramulorum 

 impositi occurrunt. Cellulse 7 — 10 /i crassse, diametro 2 — 3( — 4)-plo longiores, chro- 

 matophorum stelliforme, pyrenoide centrali instructum, continentes. Sporangia te- 

 traspora, ovata, (16 — ) 18 — 21 fj. longa, 10-12 p. lata, in filis erectis primariis vel 

 in ramis lateralia vel terminalia, lateralia sessilia vel in ramulis unicellularibus 

 vulgo singula. 



15* 



?Fig. 42. 



Chantransia Macula. A—D, young plants in the parencliyniatous stage. E, older 

 plant, with marginal cells growing" out into filaments. F, parenchymatous disc, 

 f^— /, more developed discs, partly with erect filaments and sporangia. A—E from 

 BH, F—I from AH'. A-D, G—Ii 390 : 1 ; £, F, / 630 : 1. 



