76 MISSOURI BOTANICAL GARDEN, 
acantha Zucc. Acta Acad. Leop.-Carol. xvi. 675; Engelm. 
Trans. St. Louis Acad. iii. 306, Collected Writings, 308; 
Baker, Amaryllideae, 168. A. Poselgerii Terr. Monogr. 
32.— Abundant on the limestone highlands of West Texas, 
and along the Rio Grande, as far east as Presidio, extending 
into Mexico and New Mexico. Mr. Nealley reports the 
Devil’s river as the eastern limit.— Plate 31.— By error, 
the specific name was originally printed Lecheguilla. 
Specimens examined:— From Mr. C. Wright, Nos. 1907 
(1851), 682 (1849), 1432 (1852), Mexican Boundary 
Survey; Dr. E. Palmer, 1878; O. Meusebach, Jan., 1880; 
Dr. V. Havard, June and Sept., 1880, 1881, Guadalupe 
Mts., El Paso, and Presidio; J. G. Lemmon, Organ Mts., 
May 18, 1851; G. R. Vasey, El Paso, 1880, 1881; Shaw’s 
Garden, July, 1884; W. A. Evans, El Paso, June, 1891; 
Lieut. Emory’s Second Mex. Bound. Survey, 213. 
The flowers I observed in Texas did not open their an- 
thers upon first expanding. The anthers were of a salmon 
tint which marked a contrast with the lower ones a day 
older, which showed a bright yellow coloring, caused by 
the dehiscence of the cells, and discharge of the pollen. 
I saw many plants in Texas showing a tendency towards 
a paniculate inflorescence, and Dr. Engelmann in Gard. 
Chron. June, 1883, gives a special description of specimens 
collected by Dr. Havard. A figure is given showing a 
cluster of ten capsules. 
A pest of the arid mesas and limestone cliffs of West 
Texas. The parenchyma of leaves and root furnish large 
quantities of amole valuable for cleansing purposes.* Its 
fiber, called Tampico, Ixtle, or Ystle, is very valuablet 
where strength and durability are required. 
Though this plant certainly shows affinities with A. 
heteracantha Zuce. and A. Poselgerii Salm-Dyck, it differs 
from them in having a more stiffly sub-erect and one-sided 
* Dr. Havard. Proceedings of U. S. National Museum, 1885, 518. 
Page 59 of this paper. 
+ Dr. Parry, Bot. of Bound, 11; Dr. Havard, 1. c.; Kew Bull. Dec., 
1887. Page 63 of this paper. 
