Corenso.— Botany of the North Island of New Zealand. 279 
strongly recommended the bark of that tree as “deserving extensive 
adoption into medicine.” Several dye-lichens are abundant in the island, 
viz. Usnea, Ramalina, and Parmelia (P. conspersa, saxatilis, parietina, and 
perlata). The pure semi-liquid gum fouhd in such large quantities at the 
bases of the leaves of the New Zealand flax may yet be collected and form 
a matter of export; and Zostera—useful for stuffing mattresses—(the 
recently proposed substitute in England for manufacturing paper), is very 
plentiful in many of our tidal waters. 5 
(29.) Having thus briefly noticed the utile, the dulce must not be over- 
looked ; rather, in the words of Goethe, “Let us look closely after the 
beautiful, the useful will take care of itself.” Not a few of the plants and 
ferns of New Zealand have long been cultivated in England, from the time 
of her first British visitors, and the number of those plants is annually 
increasing. Still, several highly ornamental and striking plants, chiefly 
confined to forests in the interior, or to sub-alpine solitudes, are believed 
to be unknown both to European and to colonial gardens. The most 
prominent and worthy of them will be now mentioned :—(1.) LanaE SHRUBS 
AND SMALL Trees: Pittosporum, several species ; Hoheria populnea, and 
H. lyallii, with their several strongly marked ornamental varieties ; Melicope 
simplex; Phebalium nudum; Leptospermum ericoides ; Myrtus, two or three 
species ; Iverba brexioides ; Senecio, several sp. ; Leucopogon fasciculatus, and 
its varieties ; Dracophyllum latifolium; Libocedrus doniana, and Dacrydium 
colensoi. (2.) Suatu Suruns: Carmichelia odorata and C. flagelliformis ; 
Fuchsia procumbens ; Alseuosmia, several sp. and vars.; Coprosma, several 
Sp.; Olearia, several sp. ; Senecio greyii ; Gaultheria, several sp.; Cya- 
thodes colensoi; Dracophyllum, several sp. ; Veronica, several sp.; Pimelea 
several sp. ; and Cordyline, two or three species. (3. HERBACEOUS 
Prants : Ranunculus insignis and R. nivicola, among the largest species 
of the genus; Drosera binata ; Aciphylla colensoi ; Celmisia, several 
sp.; Colensoa physaloides; Wahlenbergia saxicola ; Gentiana montana and 
G. pleurogynoides ; Calceolaria. sinclairii; Ourisia, several sp.; Callixene 
parviflora; Forstera bidwillii ; Helophyllum colensoi; and several of the 
peculiar orchideous plants, both terrestrial and epiphytical. ` 
30. Lastly, of indigenous medicinal plants and vegetable substances, a 
few will be here mentioned—a future time may prove their value. 
(1.) Those which have already been usefully tried :—The root of the hara- 
keke (Phormium tenax) as an anthelmintic and cathartic ; the leaves and 
bark of the kohekohe (Dysoxylum spectabile) as a tonic; the roots of the 
kareao (Rhipogonum parviflorum) as an alterative,—this plant is very closely 
allied to the sarsaparilla plant (Smilax sarsaparilla), and its roots have been 
beneficially used in New Zealand instead of that.medicine, which is so 
