Merrill : Plants, etc., Wilkes Expedition.] 
[Phil. Journ. Scl, Vol. Til, No. 2 
'i.A\ I :■ ''' '>. 
^^'iiry^x^t oa^-iA^ti , -"-^ 
^'^^^ A'- ■ ^^^-^^ 
r^^^^A 
*' < I ' 1 .* 
X *\ i ''V * 
IV*. 
