EUCALYPTUS TREES. 331 
dei, Kunth. )—The berry-bearing Bamboo, from Chit- 
tagong and other mountainous parts of India. It isa 
thornless bamboo, growing on dry slopes of hills. 
Height up to 70 feet ; circumference toward base 1 
foot ; growth beautifully erect. 
Melocanna humilis, Roeper.—India. More slender 
than the preceding species, and attaining only a 
height of 20 feet. 
Melocanna Travancorica. (Beesha Travancorica, 
Beddome. )—A new bamboo from Travancore, worthy 
of introduction. 
Mentha piperita, L.* -—The Peppermint. Middle 
Europe. This well-known perennial herb is impor- 
tant for its peculiar essential oil, which here, by cult- 
ure, is produced in good quality. This distilled oil 
is in considerable demand, and would be best obtain- 
ed from plants cultivated in the mountain regions, or 
naturalized along the forest rivulets. Eminent au- 
thorities refer the Peppermint, as a variety, to Men- 
tha aquatica, L., the Watermint of Europe, North Af- 
rica, West and North Asia, from which the true Crisp 
Mint (M. crispa, L.) is again derived, as well as the 
Bergamot Mint (M. citrata, Ehrh.). 
Mentha Pulegium, L.—The true Pennyroyal. Eu- 
rope, Western Asia, North Africa. A perennial scent 
herb, yielding a peculiar ethereal oil. It likes moist 
soil. 
Mentha rotundifolia, L.— Middle and South Eu- 
rope, North Africa, Western Asia, Fond of wet pla- 
ces, which, by the culture of this and other mints, may 
be profitably utilized, In odor this mint approaches to 
Melissa. The French and Italian Crisp Mint is partly 
derived from this spacies, Cfo8ely allied to the fol: 
