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tapering into a long, involute, setaceous point; spike single, 8 
inches long, drooping above ; sterile flowers much exceeding the 
short joints of the rhachis; outer glumes oblong-ovate, narrowed 
to a blunt or acutish tip; pistillate joints 4 lines long. 
Collected by the late Dr. A. P. Garber at Miami, Southeast- 
ern Florida, June, 1887. 
Botanical Note. 
Weeds at the World’s Columbian Exposition. In order that 
the exhibition of weeds at the World’s Columbian Exposition 
may be large, and representative of all sections of the country, 
the undersigned (having this feature in charge) respectfully ask 
for specimens of the worst weeds from all States and Territories. 
It is suggested that each botanist or local collector, who may 
be pleased to assist in the work, secure at least three specimens 
each of the worst weeds in his State or section. In making the 
specimens it is important that the following points be considered : 
[1.] Seeds are especially desired. [2.] Seedlings are important 
in various stages of development. [3.] The root system isessen- 
tial: also [4] the flower and flower cluster, and [5] the seed 
vessel, 
It may be necessary, therefore, to secure these various essen- 
tials at different times during the coming season. If the weed is 
a large one stress is laid upon the procuring of specimens while 
they are small enough so that the whole plant, roots and all, can 
be mounted, without bending, upon an herbarian sheet of ordinary 
size, that is, not over a foot in length. They are not to be 
Mounted, however, by the collector. 
That unnecessary duplication may be avoided, persons who 
contemplate collecting specimens should signify their intentions 
to the undersigned, and allotments will then be made, the assign- 
ments depending largely upon the locality. It is hoped that 
fach State in the Union may be represented by specimens in 
this national exhibit of our worst weeds. : 
The collecting must all be done the present season, and the 
Specimens sent in for mounting, labeling, etc., by December Ist. 
Correspondence is solicited. Byron D. HALSTED. 
Rutgers College, New Brunswick, N. J. 
