AKAtJCARlA. 187 



tuberculata, P. muricata, and Oapressus Goveniana, and by collecting 

 cones and seeds of species previously discovered by Douglas, lie was 

 the means of greatly increasing the number of living plants in England 

 of these grand specimens of arborescent vegetation. In addition, he 

 sent home a large number of hardy annuals and herbaceous plants. 

 Altogether Hartweg was absent on his different exploring travels 

 about nine years and a-half. He did not remain long in England 

 after his return, but went back to his native country. The late 

 Grand Duke Leopold having taken great interest in him, appointed 

 him inspector of the Ducal Gardens at Schwetzingen, which post he 

 held till his death in February, 1871.— (Abridged from the Woclien- 

 sdtrift and Gardeners'' Chronicle, 1871). 



V.— ARAUCARIA (JussieuJ. 



The Arauoarias are lofty evergreen trees, natives of the southern 

 Hemisphere, where they may be regarded as partly representing 

 the Firs and Pines of the north. Their most obvious characteristics 

 are — 



The trunks are perfectly straight and erect; the branches 

 are in whorls, of from four to eight, five being the prevailing 

 number, usually horizontal, but the lower ones decumbent, and 

 those above ascending. 



The leaves are spirally arranged around the branches,* im- 

 bricated in nearly all the species, and persistent many years ; 

 they are either comparatively broad, flat, ovato-lanceolate, and 

 very sharply pointed, or narrow, four-angled, and compressed, 

 and often curved. 



The species having broad, sharp-pointed, coriaceous leaves, have also 

 large ovate cones with wingless scales ;t those having narrow, tetragonal, 

 and compressed leaves, have also smaller spherical cones with winged 

 scales j % there is also a difference in the mode of germination of the 

 seeds of the broad and narrow-leaved species. The Araucarias, therefore, 

 admit of a division into two tolerably well defined groups : the first 

 (Colymbea), comprising Araucaria imbriccda, A. brasiliensis, A. Bidwilli, 

 and A. Rulei ; and the second (Eutacta), including Araucaria exceha, 

 A. Cunninghami, and A. Ooolcii. 



* Araucaria Bidwilli is an exception. 



t Strobili squamae apteras, Parlatore. — Prod, xvi., p. 370. 



X Strobili squamae alatse. — Idem. p. 372. 



