32 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser- 



Nitophyllum andersonianum J. Ag. 



Epicrisis Floridearum, Contin. Spec. Gen. et Ord. Alg., 1876, p. 474.' 



Nitophyllum (Neuroglossunt) andersotiii Farlow, W. G., Proc. Amer. 

 Acad. Arts and Sci., Vol. X, 1875, p. 365; Report U. S. Fish Comm. for 

 1875, p. 696, 1876. 



Neiiro,^losstiin andersonianutn Kgkv.V)H, J. G., Epicrisis Floridearum, Con- 

 tin. Spec. Gen. et Ord. Alg., 1876, p. 474. 



Nitophyllum andersonii Hervey, A. B., Sea Mosses, 1881, p. 177. 



Nitophyllum (Neuroglossum) andersonii Anderson, C. L., Zoe, Vol. II 

 1891, p. 224. 



Nitophyllum under sottii Howe, M. A., Erythea, Vol. I, 1893, p. 68. Mc- 

 Clatchie, a. J., Proc. So. Cal. Acad. Sci., Vol. I, 1897, p. 358. 



Neuroglossum andersonianum Agardh, J. G., Contin. Spec. Gen. et Ord. 

 Alg., Vol. Ill, Pt. 3, 1898, p. 122. 



Synopsis. — Frond both prostrate and erect. Prostrate frond creeping, 

 slender, linear, without rhizoids; branching irregularly, occasionally prolifer- 

 ating; without midrib, nerves, or veins. Margin beset at regular intervals 

 with spine-like, sometimes recurved, pinnate teeth. Branches becoming 

 erect at intervals, expanding into erect fronds. 



Erect frond shortly stalked, linear, flat, simple below, branching above, 

 with midrib; margin serrate, dentate, or beset with numerous spine-like, 

 pinnate teeth. Branches subpinnately arranged, linear, or alternate at base 

 and expanding at their apices, usually much prolonged. Stalk linear, flat, 

 with definite midrib and thin margin, the margin sometimes disappearing and 

 the median portion becoming thickened, almost cylindrical. Midrib of vary- 

 ing width, becoming prominent, in some cases thickened, almost cyHndrical, 

 branching and evanescent in upper portions of frond. 



Sporangia in rounded sori, the latter usually large and conspicuous, at the 

 apices of the upper, sometimes expanded, branches. Antheridia and cysto- 

 carps so far unobserved. 



Remarks on the Species. — The color of N. andersoni- 

 anum varies from bright red to dull carmine when alive, 

 becoming a burnt carmine in the dried specimens. More 

 often the plant has the darker hue mentioned above. The 

 frond may attain a height of 20 cm. 



The prostrate frond is commonly slender and much 

 branched, showing much similarity to the corresponding 

 portion of N. latissimum. It is destitute of midrib and 

 nerves, and seldom becomes thickened or broadly linear. 

 The erect frond branches freely, while its divisions exhibit 

 considerable variation in width. In some plants they are 

 very slender, linear, and much divided or branched. In 



I This plant was here for the first time described. It had, ir. 1875, been mentioned by 

 Farlow (cf. citations) under the name Nitophyllum (Netiroglossum andersonu) J. Ag. ms. 



