ENGELMANN NOTES ON THE GENUS YUCCA. NO. 2. 211 



Page 29. I have seen the vestiges of the moth, or rather its 

 larva, in all the vSarcoyuccas as well as in all those with dry pods ; 

 but fruits which show no trace of the larva may be seen more 

 frequently in the former than among the latter. This does not 

 indicate that all may not have been fertilized by the action of 

 the moth, but in such cases either no eggs were laid or they may 

 have aborted. 



Observations made last year by Mr. Riley and myself have 

 proved that the filiform flexible egg of the moth is not deposited 

 with the pollen into the stigmatic tube, but that the mother intro- 

 duces it through a puncture in the side of the ovary directly into 

 one of the cells just between two ovules, both of which at once 

 begin to swell up to three or four times the thickness of the healthy 

 ovules, and are thus preparing the sustenance of the young larva, 

 which feeds on one or usually on both of them until able to attack 

 the meanwhile more or less developed young seeds joining the 

 former. In a few cases I have seen the very young larva at a 

 place where four ovules, two from each side, meet, and here all 

 four were prematurely enlarged. 



Page 31. See below an account of the fruit of the Clisto- 

 yucca. 



Page 34. At the end of the character of Yucca add : floribus 

 majoribus pendulis nocturnis albidis nunc virescenti seu purpu- 

 ruscenti colore tinctis olentibus. 



Page 36. Southerners object to the remark, that the fruit of 

 Y. aloifolia is "much eaten" ; I should say that it is edible, and I 

 am informed that on the coast of Florida this species makes al- 

 most impenetrable thickets in which bears have their passages 

 and no doubt their lairs, and in the fruit of which they delight. 



Page 37. Y aspera and T. albospica are erroneously introduced 

 here ; for their proper place see below. 



Page 3S. Y. gloriosa does not belong to Sarccyucca, where, rely- 

 ing too much on the statements of others, I had placed it. Dr. 

 A. Schott, who has repeatedly been mentioned by me as a close 

 observer of Yuccas in the Southwest, was fortunate enough last 

 autumn to discover a specimen loaded with fruit, growing in the 

 open ground in the congressional garden at Washington. A pho- 

 tographic view was taken and specimens of the fruit and ripe 



