ENGELMANX — NOTES OX THE GEXl'S YUCCA. XO. 2. 313 



Chron. 1. c, would, from the size of the leaves (4* ft. long), have 

 to be referred here, if the leaves were not said to be glabrous and 

 shining. 



Page 47. The character of Ciistoyucca is to be modified as fol- 

 lows : 



Fructus indehiscens, pendulus (in altera specie erectus?), demum 

 siccatus: semina tenuiora, plana, vix marginata, albumine inte- 

 gro. — Plants caulescentes, altera arborescens, panicula sessili 

 vel pedunculata. 



* Folia serrulato-asperata. 



Yucca brevifolia, Engeltn. : pericarp spongy (erect?) seeds thick- 

 er, — Dr. Parry has just sent a specimen, which shows the panicle to 

 be ovate, dense-flowered; bracts wide and membranaceous, much like 

 those of T. Treculiana (as are also the flowers), the lower ones 2 inches 

 wide, 3-4 inches long, tapering into a herbaceous serrulate point; the 

 upper ones i inch long, oblong obtuse, of thinner texture, white; segments 

 of perigon 2j-2i inches long, narrow ; ovary attenuated into a short style, 

 ovules 0.4 mm. thick. — In Southern Utah in flower about the end of April. 



** Folia margine Integra, etc 



Yucca gloriosa, Lin. : pericarp leathery, pendulous ; seeds thinner. 



Page 50. K. consiricta^ Buckley, Proc. Phil. Ac, 1862, page 8, 

 «eems to belong to 2". angusiifolia, var. elata, and T. aibospica of 

 European gardens to var. mollis of the same. 



Page 51. T. filamentosa : numerous specimens from South 

 Carolina, Georgia, and Alabama, prove that the varieties are 

 •difficult to keep apart. Even the most marked forms of genuina 

 latifolia have sometimes large, not contracted, capsules, with near- 

 ly complete secondary dissepiments and large seeds. As thus the 

 •characters, by which I have tried to distinguish X\\^ forma genuina-, 

 prove to be uncertain, this arrangement of the different forms will 

 have to be abandoned ; we may simply distinguish them as var. 

 angusta (preferable to angustifolia on account of the species of that 

 name), var. lata., etc. Y. filamentosa seems confined to the low 

 •country of the Southeastern States and not to penetrate into the 

 interior more than perhaps 100 miles, while T. gloriosa and 

 aloifolia appear to be strictly sea-side plants. The westernmost 

 specimens of Y. filamentosa I have seen came from the western 



