718 MINNESOTA BOTANICAL STUDIES. 



The delicate moniliform stipes, and the thin external margin 

 of the apical articuli are the important characters of this spe- 

 cies to distinguish it from the preceding species. 



Comparatively common ; low tide mark, also in pools. 



6. Cneilosporum MacMillani sp. nov. Plate LII., Figs. 4 and 5 ; 

 PI. LVL, Figs. 11-14. 



Fronde crassa nudusculo-stipitata, 4-10 cm. alta, inferne sub- 

 teretibus superne flabellata bi-tripinnata ; pinnis pinnulisque 

 creberrimis erecto-patentibus sursum sensim brevioribus : articu- 

 lis stipitum cylindraceis diametrum subaequantibus, mediis et 

 superioribus compressis medio ventro elevatis, hexagonis vel 

 cuneato-deltoideis diametro sesquibrevioribus, pinnarum anci- 

 pitibus lineari-sagittatis vel lanceolatis, ultimio ellipsoideis 

 saepe incrassatis ; conceptaculis verrucgeformibus in utraque 

 facie instructis vel subcompressis in apicibus pinnularum im- 

 mersis, nonnunquam pyriformibus pedunculatis. 



This plant has its articuli of the upper part of the main 

 branches more highly elevated on the ventral side than on the 

 dorsal. The articuli of the lower portion are thick and monili- 

 form, gently compressed upwards : in the upper and middle 

 portion they become hexagonal or truncated, shorter than the 

 breadth. 



According to the description* of Amphiroa ivardii Harv. and 

 Amp. mallardice Harv., the present species has some common 

 characters with them so that I hesitated for a time to name it as 

 a new species. But the attachment of the conceptacles of our 

 plant is rather peculiar, only one similar example being hitherto 

 known in Cheil. maximum.^ The eramiferous articuli of the 

 pinnae of ours are lineari-sagittate with lobes projected upwards ; 

 and the articuli of the upper portions of the main branches are 

 hexagonal, much broader than the height. These various char- 

 acters may easily distinguish ours from Harvey's plants. Not 

 common ; low-tide mark. 



7. Corallina officinalis var. chilensis Kutz. PI. LIV.,Fig. i; 

 PI. LVL, Fig. 15. 



Fronde erecta, 5-10 cm. alta, inferne teretiuscula, superne 

 flabeliata bi-tripinnata : articulis inferioribus compressiusculis, 



* Harvey : Nereis Austr., p. 99. 



|Yendo: Cor. verae Japan. (Journ. ofSci. Coll. Tokyo, vol. XVI., art. III.) 



