THE YUCCEAE. 35 



Botanical Garden, and continued to flower until well into 

 the fall. The first flowers which opened, though shorter 

 than those of the San Antonio plant referred to H. parvi- 

 flora, and consequently broader relatively to their length, 

 possessed the conspicuously exserted white style and short 

 anthers (scarcely over 2 mm. long) of that species. After 

 the first few flowers, those which opened were relatively 

 much broader, because of a considerable actual shortening, 

 so that the expression bell-shaped, which has been used for 

 H. Engelmanni, might be applied to them, and the style 

 was not exserted, merely reaching to the mouth of the 

 perianth, and, in fact, was slightly shorter than the 

 stamens. Except for having their anthers a very little 

 shorter, these flowers are the counterpart of a well-pre- 

 served specimen of the original of H. Engelmanni sent to 

 Dr. Engelmannby Lindheimerin 1878, though the included 

 style of the latter is a little longer than the stamens. Still 

 later flowers of the same plant, while preserving the short 

 broad form, again had the style a little exserted (Plate 2). 



As in typical H. parviflora, the leaves, which are deeply 

 concave and with free marginal fibers, differ in width, as 

 indeed, is usual in the genus Yucca, and the inflorescence, 

 which in vigorous plants has a few spreading branches, 

 may sometimes be simple, in either case the fascicled 

 flowers continuing to develop in succession for many 

 months, and varying from deep rosy-red, when well lighted, 

 to a salmon-color, when shaded from strong light. 



For the present, this short-flowered plant, with the style 

 included or very slightly exserted, and which seems to come 

 from a point a little north of but very close to the known 

 range of H. parvijlora, appears to be varietally separable 

 from the latter in these characters, and should bear the 

 name Engelmanni given to it as a specific name by Kraus- 

 kopf. 



