IQ2 MISSOURI BOTANICAL GARDEN. 



drooping one : and a sheet in the Engelmann herbarium 

 with a similar leaf, two glabrous panicle fragments, and 

 several detached flowers which appear to have come from 

 them. Schott's notes and sketches in the Engelmann 

 herbarium show that the trunks were 1.75 to 2.5 m. high, 

 the leaves about .3m. long, and the panicle lax with pen- 

 dent fleshy fruit. 



It has long been evident that if, as Dr. Engelmann 

 thought doubtful, these fragments belong together, they 

 represent a species very different from any Yucca which 

 has been found by later collectors, and that the leaves can 

 scarcely be compared closely with those of any recognized 

 species, so that in August 1900, and April 1902, I took 

 occasion to revisit the original localities, respectively a few 

 miles to the eastward and a few miles to the westward of 

 Nogales, where, as I had hoped, the species was found in 

 abundance, though, as is usually true in such cases, vary- 

 ing to a surprising extent from the original fragmentary 

 material. 



Y. brevifolia, as it occurs rather sparingly in the canons 

 of the Pajarito and adjacent ranges, to the west of Nogales, 

 and abundantly among the low hills between that city and 

 the Santa Cruz river, to the east, is most commonly cespi- 

 tose and often acaulescent, though it not infrequently forms 

 a trunk 1 to 1.5 m. high, and the thick apple green abun- 

 dantly filiferous leaves, which are frequently f alcately curved 

 to one side, are usually about .75 m. in length, but vary in 

 this respect, and especially in width, which, commonly 

 about 20 mm., may reach 30 mm., or be reduced to 5 or 6 

 mm. Unfortunately none of the plants flowered ia 1 900 and 

 my second visit was too early in the season, so that neither 

 flowers nor good fruit could be obtained, but a few pan- 

 icle remnants from previous years, branched rather loosely 

 shortly above the leaves, though not so laxly as is shown 

 in the sketches by Mr. Schott, glabrous, and showing 

 where the fruits had disarticulated, leave little doubt that 



