THE TILLANDRIA USXEOIDES. 



2G5 



the evergeen oak. It hangs down like a tuft of long gray hair, in 

 somewhat the same fashion as certain lichens (usnea) in European 

 pine-forests, communicating to the trees a strange and positively 

 weird aspect. The plant is collected, and the outer cellular portion 

 being removed by soaking in water, the fibrous residuum is then em- 



VEUETA.BLE LIFE IN THE TEXAN PRAIRIES. 



1. Yucca TrSciileana. 



2. Silphium terebinthinaceum. 



3. Mamillaria rodantha. 



4. Echinocactus rotmslus. 



5. Cerens Peruvianus. 



6. Opuntia microdasys. 



ployed to stuff cushions, mattresses, and pillows ; whence it is some- 

 times called " Vegetable horse-hair." 



In the thickets that dot the central Prairies commonly flourish the 

 Lantana Camara, and the curious Unynandia speciosa, a species of 



chestnut tree on a very reduced scale. 



17 a 



