36 ABAUCABIA. 



to four, aii(t germinating under ground. Leaves, on young 

 plants, unequally formed. 



They are all large trees, natives of America and Australia. 



No. 1. Aratjcaria Bidwillii, Hooker, Mr. BidwUl's Arau- 



caria. 

 Syn. Colymbea Bidwillii, Carri^re. 



Leaves ovate-lanceolate, rigid, flat, deep-green, shining, and 

 spiny pointed, generally forming two rows along the branch- 

 lets, and without any foot-stalks; narrow, and nearly two 

 inches long on the young plants, but much shorter and broader 

 on the more mature plants, and not more than three-quarters 

 of an inch long ; those on the stem alternate, those on the 

 branchlets somewhat two-rowed. Branches in regular whorls, 

 from five to seven in number, but frequently more on the adult 

 trees ; they are horizontal, with those near the base sometimes 

 deflected and not more than 12 feet in length on old trees. 

 Branchlets in opposite pairs, about 18 inches long, slender, and 

 rather thinly covered with flat, distant, sharp-pointed leaves. 

 Cones, ovate-globular or oblong, about nine inches long; 

 sometimes nearly as broad, and a little depressed at the ends. 

 Scales large, projecting, with an acute, transverse ridge across 

 the centre, highest in the middle, and furnished with a sharp- 

 pointed reclining hook at the extremity. The scales are from 

 one to two inches broad, and from half to three-quarters of an 

 inch thick, loosely adhering, and very deciduous when the 

 seeds are ripe. Seeds very large, from two to two and a half 

 inches long, by three-quarters of an inch broad, terminating 

 at the apex in short callous marginal wings, furnished with 

 long, flat, tapering, curved points, more than an inch long. 

 Nuts eaten by the aborigines. 



A majestic tree, with a very straight cylindrical trunk, grow- 

 ing from 100 to 150 feet high. 



It is found on the Brisbane mountains and in the neighbour- 

 hood of Moreton Bay, in Australia. Mr. Bidwill, after whom 

 it was named, describes it as overtopping the forests, with a 



