180 
MERRILL. 
Table II . — Summary of species, etc. — Continued. 
1 Families, genera, and species. 
Natural distri- 
bution. 
Purposely intro- 
duced. 
Accidentally in- 
troduced. 
Cultivated. 
1 Spontaneous. 
American origin. 
Oriental or Euro- 
' pean origin. 
Typhaceae: 
! 
X 
X 
Potamogetonaceae: 
X 
X 
X 
X 
Hydrocharitaceae: 
X 
X 
Gramineae: 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X? 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Andropogon sorghum L. 
X 
X 
X 
Eriochloa ramosa OK. 
X? 
X 
Paspalum scrobiculatum L. 
X? 
X 
Paspalum distichum L, 
X 
X 
Paspalum conjugatum Berg. 
X 
X 
X 
Digitaria sanguinalis Scop. 
X? 
X 
Digitaria violascens Link.. 
X? 
X 
Panicum colonum L. 
X? 
X 
Panicum crus-galli L. 
X? 
X 
Panicum amplexicaule Rudge 
X 
X 
Panicum maximum Jacq. 
X 
X 
X 
Panicum repens L. . 
X 
X 
Oplismenus compositus Beauv. 
X? 
X 
Cenchrus echinatus L. 
X 
X 
X 
Setaria viridis Beauv. 
X 
X 
X 
Rptnrip flpvpi TCimth 
X? 
X 
Oryza sativa L . . 
X 
X 
X 
Leersia hexandra Sw. _ 
X 
X 
Sporobolus indicus R. Br 
X? 
X 
Sporobolus virginicus Kth. 
X 
Phragmites vulgaris Trin. 
X 
X 
Eragrostis interrupta Doell. . 
X? 
X 
Eragrostis unioloides Nees . 
X 
X 
X 
Eragrostis pilosa Beauv. ... 
X? 
X 
Cynodon dactylon Pers. 
X? 
X 
Chloris barbata Sw. 
X 
X 
X 
Eleusine indica Gaertn. 
X 
X 
X 
Dactyloctenium aegyptium Willd. 
X 
X 
X 
Ramhusa vnlp’arin Rehrad. 
X? 
X 
Cyperaceae: 
Kvllinva brevifolia Rottb. 
X? 
X 
Kvllinc’a monocephala Rottb. 
X? 
X 
Pycreus odoratus Urb. 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
xxixxxxxixxxiixixixii X XX X ^ doubtful 
