Ca.rsk. — On Panax arboreum. 359 



References. 



The following are the chief references additional to those 

 given in the first part of this paper. The references to the 

 " Flora Novse-Zelandise " are all to volume ii. 



1. " Species Algarum," 1848-63. (J. Agardh.) 



2. " Bidrage till Algernes Systematik," parts iv., v., vi. 



o 



Lunds Univ. Arsskr.. torn. xxi. and xxiii. (J. Agardh.) 



3. " Epicrisis Floridearum," 1876. (J. Agardh.) 



■i. " Analecta Algologica,"* 1892-99. (J. Agardh.) 



5. " De dispositione Delesseriearum," 1898. (J. Agardh.) 



6. "Flora Antarctica." 1847. (Sir J. D. Hooker.) 



The species of the order Sphacelariacece are being revised 

 in the "Journal de Botanique " by Professor Sauvageau 

 (August, 1900, et seq.). Already several New Zealand forms 

 have been dealt with. De Toni's " Sylloge Algarum," unfor- 

 tunately, is not procurable in the colonies, but would be of 

 considerable assistance to the student. 



I cannot close this paper without referring to the death, at 

 a ripe old age, of the greatest of algologists, Professor J. G. 

 Agardh I found him always ready and willing to assist me, 

 and I regret that he was unable himself to draw up this list, 

 when it would have been of much greater value than it is. 



Art. XXXI. — On the Occurrence of Panax arboreum as an 



Epiphyte on the Stems of Tree Ferns in the Mauku 

 District. 



By H. Carse. 



[Head before the Auckland Institute, 7th October, 1901.] 



In a paper read before the Hawke's Bay Philosophical In- 

 stitute on the 9th August, 1886, by the late Mr. Colenso, 

 mention is madef of the peculiar growth of a Panax arboreum 

 upon and around the stem of a tree fern, Cyathca dealbata. 

 Mr. Colenso said, " I have a curious anomaly to mention, 

 which, as far as I know, is quite unique. Four years ago, 

 while botanising in the high and dry woods near Matamau, 

 I came upon a fine tree fern (Gyathea dealbata) whose caudex 



* I have, unfortunately, not seen the sixth part of this work. — 

 R. M. L. 



f Trans. N.Z. Inst., vol. xix., p. 257. 



