Centipede Grass (Hremochloa ophiuroides). Centipede 
Grass, now common in Florida as a lawn-grass, was in- 
troduced in 1917 from regions in China where Zeuxine 
strateumatica is a native, and the length of time since the 
introduction of the grass to the United States would 
seem to be commensurate with the length of time it has 
taken for the orchid to become naturalized. Protocorms 
of Zeuxine might well have been distributed with stolons 
of Hremochloa ophiuroides and in the course of time might 
have established themselves in favorable locations. But 
until we discover definite information in this regard con- 
jecture must of necessity be our only recourse. 
As efforts to trace the introduction of Zeuaine strate- 
umatica to Florida have failed, it might seem that this is 
so because the species has been a native for a very long 
time; that it is a species with representatives in both 
hemispheres and comparable in this respect to Hulophia 
alta and Polystachya luiteola, orchids known for many 
years to be components of the flora of Florida. On this 
assumption it would have to be argued that the plant has 
escaped attention until recently and is just coming to the 
notice of botanists. To argue thus would be quite just- 
ifiable if the localities where Zeuaine strateumatica has 
been found were just now being explored for the first 
time and were remote from travelled paths and from 
human habitations and if the plants proved to be confined 
because of their dependence on special soils to limited 
areas from which they have been unable to spread. But 
the simultaneity of the reported discoveries of colonies 
in widely separated areas near thoroughfares and in the 
vicinity of human dwellings constitute rather convincing 
evidence that the species is a recent newcomer rather 
than a native being noticed for the first time in regions 
where it has escaped observation for untold decades. In- 
tensive botanical exploration has been in progress many 
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