Plantce Lindheimeriance. 207 



date; stigma 5-lobed, erect ; fruit 2| inches long, 6-8 lines 

 wide at the top, deeply umbilicate. Lindheimer's specimens 

 are from Industry, south of the Brazos. I believe I have 

 seen the same species near Natchitoches on Red River. 



O. Lindheimeri (n. sjj.) : erecta, robusta ; caule lignoso ; 

 articulis (magnis) ellipticis basi attenuatis planis ; pulvillis 

 remotis ad margines confertioribus griseo-tomentosis, setis 

 flavidis aculeisque paucis instructis 1-3 compressis validis 

 deflexis varie divergentibus stramineis, nunc cum 1-2 aculeis 

 adventitiis gracilioribus ; flore . . . bacca clavata elongata 

 subpulposa glabrata ; seminibus late marginatis. — About New 

 Braunfels. Plant erect, often 6-8 feet high: stems terete 

 ligneous, sometimes 6 inches in diameter, with gray bark, and 

 very light, spongy wood. Larger joints 9-12 inches long, 

 5-7 broad. Areolae l|-2 inches distant on old joints; 

 bristles on them 1-3 lines long. Spines all pale yellow, 

 much compressed, indistinctly annulated, ^-1 inch long, 

 various ; the 3 longer spines, or the one longer, with one or 

 two shorter spines. The fruit, which Lindheimer has sent as 

 belonging to this species, resembles very much that of O. vul- 

 garis, 2-2| inches long, slender, with a deep umbilicus, very 

 different from that of the following species. Seeds 2 - 2| lines 

 in diameter, not numerous. Young plants grown from this 

 seed have the same compressed spines, but are brown at the 

 base ; the lower areolae produce no spines, but a quantity of 

 long, coarse hair. — I add here the following species, though 

 not properly belonging to the flora of Texas, because I suspect 

 that it is also found at the mouth of the Rio Grande, within 

 the limits of Texas. There, and especially on the barren sand 

 islands at the Brazos, near Point Isabel, the St. Louis Volun- 

 teers found large and impenetrable thickets formed by an 

 Opuntia with large joints, covered with almost globose fruits, 

 with innumerable small seeds, and a very luscious deep red 

 pulp. The fruit and seed are before me, but unfortunately I 

 did not obtain a living specimen. 



O. Engelmanni (Salm. Mss.) : erecta ; articulis orbiculato- 



