CIIAR.E AUSTRALES ET ANTARCTICJE. 201 



foliolis ad genicula foliorum minimis vel subnullis ; antheridiis maxi- 

 mis seque ac semina in fundo verticilli et in geniculis foliorum aggre- 

 gatis, seminum fasciis 8. 



Ch. australis, R. Br. Prodr. p. 346. A. Br. in Linncea, 17, p. 117. Plant. 

 Preiss. 2. p. 148. 



East coast of New ' Rolland, R. Brovvn, in 1802-3; Swan River, 

 Drummond, No. 11, in herb. Hook. ; Van Diemens Land, Gunn, 1832, 

 in herb. Hook. 



This large and striking species is nearly related to the East Indian 

 Ch. corallina, differing especially by the diœcious fructification, by the 

 imperfect structure of the foliola, and by the seeds and antheridia 

 standing in clusters of two or three. It is transparent and glossy, 

 without any incrustation. The seeds are, in comparison with the size 

 of the plant, minute, scarcely so large as in Ch. fœtida, the dark- 

 coloured nut being the length of •£ a millim. 



15. Ch. plebej 'a, R. Br. ined. 



A. Br. in Linncea, 17, p. 118. Plant. Preiss. 2. p. 148. 

 Of this species only the maie plant is known to me. 

 European species belonging to this division are Ch. coronata, Ziz., (Braunii, Gmel.,) 

 and Ch. stelligera, Bauer, {ulvoides, Bertol.,) hitherto erroneously placed in the genus 

 Nitella. 



/3, corticatœ, caule corticato, seriebus tubulorum corticis duplici foliorum 

 numéro. 



* gymnophyllœ, foliis ecorticatis. 

 To this division belongs Ch. Baueri, À. Br., (Ch. coronata, Wallr., non Ziz.) a 

 species nearly allied to Ch. coronata. The Australian species of this division bear 

 no affinity to the European. 



16. Ch. Drummondii ; monoica, rigïdiuscula, diaphana, tenuissime 

 incrustata ; caule stricto corticato, papillis sparsis inconspicuis mu- 

 nit o ; verticillorum foliis 10-12, omnino ecorticatis, 6-articulatis, 

 articulo ultimo attenuato foliola geniculum ultimum coronantia parum 

 superante ; foliolis in omnibus foliorum geniculis verticillatis, quam 

 semina duplo longioribus ; stipulis duplici foliorum numéro, mini- 

 mis, coronulam verticillo appressam inconspicuam formantibus; semi- 

 nibus solitariis, fasciis 11. 



Swan Hiver, Drummond, No. 1, in herb. Hook. 



This species is nearly related to the two folio wing, still more nearly, 

 however, to Ch. Hydrop itys, Reichenb., of East India and South 

 America, from which it differs by its uncoated leaves, imperfect prickles 



vol. i. 2 D 



