973 
trees send out branches, and they are long, straggling, 
and terribly thorny. Others grow with a diameter of only 
two inches, and make good poles for bringing down oranges, 
every one of which has to be torn from the tree, or it de- 
cays without falling. The cavities of the guadua often 
contain water. It is erroneously believed that the quan- 
tity increases and diminishes with the phases of the moon. 
Stones are said also to be found in these joints. This 
might be expected, but I never found an authentic instance, 
and doubt the fact. The only Instance believed to occur 
under my own observation was certainly false, as the stone 
was an ordinary one. I must state one other thing about 
the guadua which is unusual In the vegetable kingdom here, 
but very common at the North. It is apt to take entire 
possession of the ground on which It grows. Now a square 
mile covered with the same species, say a pine, an oak, or 
the beech, an acre covered with the same species of grass 
or whortleberry or other plane, is no uncommon thing at the 
North, but in the tropics it is quite different. Plants 
are not gregarious here, still less exclusive. I have seen 
the guava grow in natural orchards where most of the trees 
in a considerable space were Psidlum, but even this is 
rare, and in general you cannot expect, where you have 
found a plant you want, to find others of the same species 
near it. If I wish to find a second lime-tree, for in- 
stance, it Is of no more use to look in the neighborhood 
where I found the first than In any other. But a guadual 
is a considerable space, almost always near a stream, where 
scarce the smallest intruding plant Is permitted. The 
guadua might be cultivated to great profit, but I never 
knew of but one attempt at it.. The flower and seeds are so 
rare that few botanists have ever seen them." (Holton, New 
Granada, pp. 109-110.) 
Baryxylum dubium (Spreng.) Pierre.. (Caesalplnlaceae . ) 
42325. Seeds from Buenos Aires, Argentina. Presented by 
Sr. Benito J. Carrasco, Director, Botanic Gardens. A hand- 
some ornamental tree with mimosa-like foliage and strik- 
ing yellow flowers arranged in nuge panicles. It Is closely 
related to the Royal Polnclana and vies with it In beauty 
of flower and foliage. 
Berberis hookeri viridis Schneider . • (Berberldaceae . ) 42185. 
Seeds from Kew, England. Presented by Sir David Praln, 
Director, Royal Botanic Gardens. Described as a useful 
evergreen barberry. 
Cannabis sativa L. (Moraceae.) 42166. Seeds from Yoko- 
hama, Japan. Purchased from the Yokohama Nursery Company. 
"Tochigi (pronounced to-chlng-ee) hemp is regarded as the 
best fiber producing hemp In Japan. It Is cultivated most 
