452 Transactions. — Botany, 
absorbing powers of leaves, a fanction of late years overlooked, or altogether 
denied, by physiologists. 
The lava fields of the Auckland Isthmus afford proof of the correctness 
of these conclusions. Although not more than from six to ten miles 
distant in a straight line their ligneous plants do not exhibit the same 
peculiarities as those of Rangitoto. Owing to the longer interval that has 
elapsed since their formation, a much larger quantity of soil is found 
amongst the rocks, so that in many places the titoki, mangiao, kohe-kohe, 
rewa-rewa and other trees attain their average dimensions. The largest 
specimens of Griselinia lucida that I have met with grew amongst the rough 
scoria near Mount Eden, but owing to the comparatively small amount of 
atmospheric moisture the leaves present an ordinary appearance, and the 
extremely luxuriant foliage so characteristic of the woody vegetation of 
Rangitoto is not developed. 
Catalogue of Phenogamie Plants and Filices collected on Rangitoto Island. 
I have to express my indebtedness to Mr. T. F. Cheeseman, for my 
knowledge of several interesting plants not observed by mo, aud havo 
distinguished them by affixing his initials in cach case. 
* Naturalized plants are distinguished Ey an asterisk, 
DrcorvrEDoss. 
Clematis indivisa, Willd. T.F.C. Sophora tetraptera, Aitin. 
mae ene Br. iubus australis, Forst., B. and y. 
s, Banks and Sol. TE 
ar pier Banks and Sol. Acena sanquisorle, Vall. 
Cardamine hirsuta, * 4myudalus persica, L. 
Lepidium oleraceuu, Forst, Tillea verticilluris , DC. 
Melicytus ramiflorus, Forst. Drosera auriculata, Backh. T.F.C. 
Pittosporum crassifolium, Banks and | Halorayis TA. 
aeq. 
Sy Labill., 6. dif- 
Stellaria pers “Banks and Sol. 
T.F 
.C. Leptospermum web Forst. 
* Silene guingueruluera, L. ericoides, A, Rich 
Playianthus divaricatus, Forst. : Metrosideros florida, Sm 
Linum monogynum, Forst. robusta, A. Cu n. 
Geranium dissectum, L., var. caroli- tomentosa, A. re 
nianum, a. and s ar. 
Pelargonium australe, L., var. elandes- scandens, Danke: and Sol. 
tinum. Fuchsia excorticata, Là 
Melicope ternata, Forst. Epilobium mimmularifolium, X Cunn. 
Dysoxylum spectabile, Hook. f. tetragonum, L. 
Fomaderris phylicifolia, Ladd. junceum, Forst, 
Dodonga viscosa, Forst. pubens, A. Rich. 
Alectryon excelsum, DC. Mesembryanthemum australe, Sol. 
Corynocarpus lariyata, Forst. Tetrayonia expansa, Murray. 
Coriaria ruscifolia, L. Hydrocotyle akilia; ii GE. e 
Carmichelia austr E Hook. f, Apium australe, Thouars, 
