BY W. W. WATTS. 765 



Section ii. Receptacle exserted. 

 H. Baileyanum Dom.; H. trichomano'ides Bailey, noii V.d. Bosch. 

 On prostrate tree with //. Waller i, by creek, Major's Home- 

 stead, Ravenshoe; August, 1913. A most distinctive and beauti- 

 ful species. 



Subgenus Leptocionium. 



Section i. Ultimate segments m.inutely denticulate. 



H. Shirleyanum Dom., Prodr., p. 22, Pis. i., ii. 



Evelyn Scrub, mixed with H. australe; R. F. Waller, 1908(Hb. 

 Syd.). 



Section ii. Ultimate segments more or less spinuloso-de7iticulate. 



A. Receptacle not exserted. 



H. GRACILESCKNS Dom., loc. cit., p.23. 

 Evelyn Scrub; R. F. Waller, 1908 (Hb. Syd., under '^Zf. tu7i- 

 bridgense"). 



B. Receptacle exserted. 

 (a) Leaves not crisped. 



H. PR^TERVisuM Christ.(?var.). 



Evelyn Scrub; R. F. Waller, 1908 (Hb. Syd.; adjudged by the 

 late Mr. Betche to be "a small form of the common H . tun- 

 bridgense "). 



It is with some hesitancy that I assign this plant to Dr. Christ's 

 species (from Borneo and Samoa) except as a variety. The frond 

 is more compactly ovate, or ovate-lanceolate, and more regularly 

 pinnate than the specimens of //. prcetei'visum (from Samoa) in 

 the Sydney Herbarium; but the two agree in the closely denticu- 

 late segments, and the clustering of the sori at the apex of the 

 frond; save that, in Mr. Waller's specimens, the sorus is scarcely 

 stipitate, and the lips of the indusium are cretiulato denticulate, 

 not entire. I attach less importance than I might otherwise 

 have done to this last point, since the lips of the indusium in 

 the Samoan plant are scarcely "entire." 



Mr. Waller's plant seems to answer very nearly to the descrip- 

 tion of the type; but possibly the distinctly crenulato-denticulate 



