24. Mr. Brown, ou the Proteacee of Jussieu. 
the African species; and my friend Mr. Ferdinand Bauer has 
observed a similar tendency in Protea mellifera. 
Among the New Holland species, Banksia speciosa is the sole 
instance, and even that only in certain circumstances, of this 
manner of growth. | 
The favourite station of Proteacex is in dry stony exposed 
places, especially near the shores, where they occur also, though 
more rarely, in loose sand. Scarcely any of them require shelter, 
and none a good soil. A few are found in wet bogs, or even in 
shallow pools of fresh water; and one, the Embothrium ferrugi- 
neum of Cavanilles, grows, according to him, in salt marshes. 
Respecting the height to which plants of this order ascend, a 
few facts are already known. The authors of the Flora Peruviana 
mention, in general terms, several species as being alpine; and 
Humboldt, in his valuable Chart of /Equinoctial Botany, has 
given the mean height of Embothrium emarginatum about 9300 
feet, assigning it a range of only 300 feet. On the summits of 
the mountains of Van Diemen's Island, in about 43? south lati- 
tude, at the computed height of about 4000 feet, I have found 
species of Embothrium, as well as other genera hitherto observed 
in no other situation. Embothrium, however, as it is the most 
southern genus of any extent, so it is also, as might have been 
presumed, the most alpine of the family. dum A 
Two genera only of this order are found in more than one . 
continent: Rhopala, the most northern genus, which, though 
chiefly occurring in America, is to be met with also in Cochin- - 
china and in the Malay Archipelago; and Embothrium, the 
most southern genus of any extent, is common to New Holland 
and America. ——— EC cu 
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