250 PLANTS OF NEW ZEALAND 



Elaeocarpus Hookerianus (Hooker's Elceocarpus) . 



A smaller species, called Pokaka by the ^laoris. The flowers do not open 

 out so widely as those of the Hinau, and are greenish-white in colour. Drupe 

 blue, small. Found in both islands. Fl. Nov. -Jan. 



Malvaceae. 



The Family of Mallows and Eibbon-woods. 



Distribution. — An important and widely distributed faraily, occurring 

 chiefly in tropical and sub-tropical countries. Of the 60 genera belonging to the 

 order, only four are found in New Zealand, and of these, three are endemic. The 

 ]\Ialvaceae are generally mucilaginous, and non-poisonous. The most valuable 

 genus is Gossypium. The delicate unicellular hairs which cover the seeds of these 

 plants, form the cotton so largely used in manufacture. 



The Hollyhock (AWuea), the tree-mallow (Lavatera) , the Abiitilon, and the 

 Hibiscus, are much cultivated for their flowers. Hibiscus cannabimus is the 

 Deccan Hemp of western India. A decoction of the Marsh Mallow is used in 

 throat affections. 



Some of the New Zealand trees of this order are noted for the strength and 

 beauty of their inner bark, which is used for various ornamental purposes. 



Key to the Genera. 



1. Ovary 1 or 2 celled. Plagiantlius, p. 253. 

 Ovary 5 celled. 2 



2. One ovule in each cell. Hoheria, p. 250. 

 Two or more ovnles in each cell. Hibiscus, p. 260. 



5. Ovary 10-12 celled. Gaya, p. 260. 



Genus HoJieria. 



Trees with tough inner bark. Leaves extraordinarily variable. Flowers 

 white, axillary, on jointed peduncles. {Hoheria is a modification of the native 

 name). Maori names Houi, Whauivhi, Hou]iere. 1 sp. 



Plants of both this and of the next genus (Plagianthus), are popularly 

 known as Ribboniuoods. The bast or inner bark is perforated by the medullary 

 rays, and this gives to it a characteristic ribbon-like appearance. This genus is 

 endemic in New Zealand. 



Hohepia populnea {The Poplar-like Bibhon-ivood) . 

 The varied names given by the Maoris in different districts 

 to this plant, are all said to spring from the same root. Whau 



