96 GELIDIACEAE 
Gelidium caloglossoides sp. nov. 
Thallus small, 0.8-т.5 cm. long, repent, complanate throughout, 
more or less divaricate-radiately branched at the frequent attach- 
ment nodes, with usually 2-5 branches from either margin at each 
node, often with 1-4 minute rudimentary ventral branches an- 
erior to the older cylindric or capitate-cylindric boring haptera; 
main axes with 6-14 nodes, some of the branches developing in 
like fashion; main axes linear or ribbon-shaped, mostly 0.25-0.8 
mm. wide, 60—130 u thick, 2-8 times as wide as thick; younger 
branches lanceolate, acuminate or acute, the surface cells in the 
apical region in very distinct oblique rows; surface cells in mature 
sterile parts averaging II и in maximum diameter; medulla show- 
ing in cross section a single (very rarely imperfectly double) row 
of large cells, these (and sometimes the adjacent cells) in the older 
parts more or less surrounded by rhizoidal hyphae; sporangiiferous 
branches free, ascending, linear or linear-spatulate, gradually 
narrowed to the base, the acute or subacute apex commonly 
deflexed, the sporangia mostly in distinct oblique lines. [PLATE 
34, FIGURE 7; PLATE 35.] 
On shells, “dredged in 2% fathoms,” Island of San Lorenzo, 
Coker 59 p.p. 
Gelidium caloglossoides is manifestly allied to the somewhat 
variable С. pusillum (Stackh.) Le Jol., yet we feel that it would 
bean error to attempt to associate it with that species as a form ог. 
variety. Of all the forms that have been referred to G. pusillum 
it is perhaps the most suggestive of that figured and described by 
Okamura as Gelidium repens (Bot. Mag. Tokyo 13: 8. pl. 1. f. 5-8. 
1899) and distributed by him in Alg. Тар. Ехвісс. no. 5. But from 
suggests Caloglossa and certain other Delesseriaceae, and this pecu- 
liarity, together: with the prostrate repent habit of the plant, umi 
determined the choice of the specific name. | 
