CHARGE AUSTRALES ET ANTARCTICjE. 197 



inferioribus remotis, laxiusculis ; superioribus approximatis, densis ; 

 foliis 6 triplicato- vel (in verticillis supremis) duplicato-divisis, radiis 

 primae divisionis 6-8, ultimse 4-5, articulis divisionis penultimse in 

 verticillis superioribus abbreviatis, segmentis ultimis mucrone impo- 

 sito conico brevi apiculatis ; seminibus subglobosis, coronula brevi 

 obtusa, fasciis 6-7. 



Fan Diemen's Land, Gunn, 1832, No. 1002, in herb. Hook. 

 This species forms massy and compact tufts of a brown-green, or 

 black-green colour, growing in company witli Cliara australis. The 

 spécimens being too much advanced in maturity and scarcely bearing 

 fructification, I could not décide whether it was diœcious or monœ- 

 cious. In the last case it will be difficult to separate it from the more 

 condensed varieties of N. gracilis, a species which is spread over a large 

 part of the earth. The seeds are scarcely larger than those of N. tenu- 

 isshna ; the brown nut has the length of .2 5-. 2 6 m. 



/3, heterophyllœ, ut supra. 

 In Europe there is only one species of this division, namely N. hyalina, DC, 

 a species which was long confounded with N. tenuissima. The New Holland species 

 of this division are more numerous. 



5. N.biformis; dioica; caule tenui; verticillis sterilibus et fertilibus 

 minutis, inferioribus laxioribus, superioribus densis gelatinosis, in 

 planta fœminea approximatis, in planta mascula graciliore remotis ; 

 foliis verticillorum 8, interjectis in verticillis inferioribus paucis mino- 

 ribus, in planta mascula plerumque simpliciter, in fœminea in uno 

 alterove radio duplicato-furcatis, segmentis mucrone conico brevius- 

 culo apiculatis ; seminibus solitariis, coronula breviuscula, fasciis 8-9. 

 Swan River, Drummond, No. 8, in herb. Hook. 



This species resembles the less and more condensed forms of N. tenu- 

 issima, having, however, still smaller whorls. In some characters it 

 approaches to N. microphylla and glœostachys, but by the smaller leaves 

 between the large in the inferior whorls it is allied to the following 

 species. The maie plant has a différent appearance from the female, 

 the whorls being less and more distant. The seeds are somewhat 

 larger than in the preceding ; the dark-brown nut with sharp angles is 

 about .34 m. long. 



6. N. Llwtzkyi. 



Chara Lhotzkyi, A. Br. in Linncea, 17. p. 114. Plant. Preiss, 2. p. 145. 



