Tbe species is of interest in that though it belongs to the 

 section Aquatica it is seldom submerged; in one of its known 

 South Australian stations submergence could not take place, 

 in the others submergence would be infrequent. The South 

 Australian specimens on the whole agree well with the 

 diagnosis given by Sadebeck for this section of the genus. 

 The leaves have the usual four wide air passages bounded at 

 the thinnest part by two or three layers of cells, while there 

 are no sclerenchyma strands. 



The stock is trilobed 0) f small, averaging 1 cm. in cross 

 section. From 8-19 leaves are present, 6-7 cms. in length; the 

 stomates are developed in four rows over the air chambers of 

 the leaf. There is no indusium present covering the sporangia. 

 The megaspores have numerous blunt papillae on all faces, the 

 angular ribs are very prominent. Sadebeck gives the colour 

 of the spores as yellow-white (10: p. 777). When observed 

 fresh from the South Australian specimens they vary from a 

 pale greenish-white to olive-green when wet, but are a pure 

 chalky- white when dry. It was only when taken from 

 decaying sporangia and themselves decayed that they appeared 

 yellowish. 



The localities are( 2) : — 



(a) National Park, Belair, near Pines Oval. 



(b ) Roadside below Anstey Hill, near Tea Tree Gully 

 (MissM. I. Collins). 



(c) Victor Harbour, wet sandy soil at Mount Breckan. 



Phylloglossum. 



Phylloglossum belongs to a monotypic genus; Phyllo- 

 glossum Drummondii, Kunze, being the only species. It is 

 recorded by Bentham (1 : p. 672) from Western Australia, 

 Victoria, and Tasmania. Maiden and Betche (7: p. 8) include 

 it in the New South Wales flora. It is also well known as 

 occurring in the North Island of New Zealand (4: p. 1032). 

 The record of the plant from South Australia thus bridges over 

 the gap in its distribution along the southern part of Australia. 



(i) In one instance a bilobed stock has been observed. The 

 specimen in all other respects agreed with the normal trilobed 

 form. 



(2) While this note is passing through the press further records 

 for Iso'etes have been made at Blackwood and Kersbrook. The 

 habitat in each case was sandy loam, swampy in winter, though not 

 submerged, and in summer dry and baked hard. Iso'etes is now 

 known from stations more than 50 miles apart along the Mount 

 Lofty Ranges. It is probably not uncommon but is easily over- 

 looked, since its tufts of leaves superficially resemble those formed 

 by non-floweiring specimens of several species of phanaerogams 

 occurring in the area. — Added 24/9/18. 



