364 

 Psidium rufum, Martius. 



Brazil, in the province Minas Greraes, on sub-alpine heights. 

 This Gruava-bush gains finally a height of 10 feet, and is 

 likely the hardiest of all the species, producing palatable 

 fruit. 



Ptychosperma Alexandrae, P. v. Mueller. 



The Alexandra Palm. Queensland, as well in tropical as 

 extra-tropical latitudes. The tallest of Australian Palms, 

 and one of the noblest form in the whole empire of vegeta- 

 tion. It exceeds 100 feet in height, and is likely destined 

 to grace any shady moist grove free from frost in this and 

 other countries, as it seems less tender than most palms. 

 The demand for seeds has already been enormous. 



Ptychosperma Cunninghami, Wendland. 



East Australia, as far south as Illawarra ; thus one of the 

 most southern of all palms. This also is a very high species, 

 destined to take here a prominent' position in decorative 

 plantations. Several species occur in Peegee and other 

 islands of the Pacific Ocean, arid again others might be 

 obtained from India, but they are probably not so hardy as 

 ours. Though strictly speaking of no industrial value these 

 palms are important for horticultural trade, and are objects 

 eminently fitted for experiments in acclimation. 



Ptychosperma elegans, Blume. 



(P. SeafortMa, Miq. SeafortMa elegans, Pv. Br.) 

 Litoral forests of tropical Australia. Also a lofty magnifi- 

 cent Peather-Palm. Its leaflets are erose. It may prove 

 hardy. 



Pycnanthemum incanum, Michaux. 



North America. A perennial herb, in odor resembling both 

 Pennyroyal and Spearmint. It likes to grow on rocky 

 woodland, and on such it might be easily naturalized. 



Pycnanthemum montanum, Michaux. 



The Mountain-Mint of North America. A perennial herb 

 of pleasant aromatic mint-like taste. These two particular 

 species have been chosen from several North American 



