191-4] Setchell: The Scinaia Assemblage lU'J 



doubtful synonym of this species. The specific name dichototna ante- 

 dates that of Salicornioides and must replace it if, as certainly seems 

 from the description of Suhr {loc. cit.), the plant of Suhr should 

 prove to be identical with that of Kuetzing. Dr. A. J. Ewart, at my 

 request, kindly allowed me to examine a fragment of Suhr's type 

 which is preserved in the National Herbarium of Victoria. AVhile the 

 habit is close, the microscopic structure is entirely different from that 

 of Scinaia Salicornioides and exactly that of a Galaxaura. The type 

 of Corallopsis dichotoma Suhr is well represented in Suhr's figure {loc. 

 cit.), is faded and lacking calcification (decalcified?). In habit and 

 structure it agrees well with the description and figures of Galaxaura 

 magna Kjellman (1900, p. 82, pi. 15, figs. 1-10, pi. 20, fig. 46) and 

 were it not for the lack of calcification might be referred to that species 

 without hesitation. It is to be removed, however, from even the 

 doubtful synonymy of Scinaia Salicornioides and is to be farther con- 

 sidered when the status of both name and rank of Galaxaura magna 

 may be under investigation. 



Scinaia articulata sp. nov. 



Plate 13, figs. 39, 40. 



Plant deep rose red, 10 cm. high, 7 times dichotomous, broad, 3-5 

 mm. in diameter (dried), cylindrical, regularly and frequently con- 

 stricted, segments elongated cylindrical; branches slightly attenuated 

 below ; axis conspicuous throughout ; cystocarps sparse, scattered, of 

 medium size ; — axial strand broad, stout, dense, largely of slender 

 filaments ; epidermis of large colorless cells, or utricles, and almost no 

 colored cells ; utricl&s flattened outwards, 5-7-gonal in surface view 

 (T), uniform, slightly rectangular in section, 17-20/x (R) by 10-15/i 

 (T), closely placed together; colored epidermal cells so few as to 

 practically escape notice ; hypodermal cells in 1 layer, scattered 

 orbicular, 12-14/x in diameter ; corticating layer thin, loose ; antheridia 

 not seen ; cystocarps broadly pyriform, flattened globular, abruptly 

 narrowed into a short broad earpostome, 215-235;U, (T) by 165-170/x 

 (R) ; gonimoblasts slender, very numerous, radiating from a scanty 

 central, cellular placenta forming a compact spore mass, abjointing 

 successively globose-ellipsoidal spores; periderm of 2 (-3?) layers, 

 p.seudoparenchymatous. 



The writer has seen but two specimens of this puzzling plant, one. 

 No. 32172 in Herb. J. G. Agardh from Santa Barbara. California, 

 collected by ^Irs. Bingham, the other in Herb. F. S. Collins, sent from 

 Santa Barbara by J. AV. Calkins. It is passible that the two specimens 



