52 
From north and east of Santa Fé and the Llano Estacado, to Zuni ; 
extending southward deep into Mexico: fl. May —- July. — Northward 
5-6, south 10-20 or more, feet high; easily characterized by the 
horizontal and verticillate branches, etc. 
t => 
~ 48. O. acantnocarpa, E. & B. in P. R. R.: arborescens; ramis 
alternis adscendentibus; articulis cylindricis; tuberculis elongatis ; 
aculeis 8 — 25 stellato-divaricatis ; bacca subglobosa tuberculata acu- 
leata; seminibus multangulatis. 
Mountains of Cactus Pass, between Santa Fé and the Western Col- , 
orado. — Stems 5-6 feet high; branches few, alternate, and separat- ri 
ing from the stem at an acute angle. Joints (as in the preceding) { 
4-6 or 8 inches long, about 1 inch in diameter ; tubercles 9 — 10 lines 
long ; interior spines 1— 1} inches, exterior ones 4-10 lines, long. 
Spines of fruit on the depressed tubercles 3-6 lines long. Seeds 
large, unlike those of any other Opuntia seen by me. 
44, O. mMaminuata, A. Schott in litt., B. C. R.: arborescens, divari- 
cato-ramosissima ; articulis crassis abbreviatis perviridibus ; tuberculis 
tumidis ; aculeis 4-6 brevibus plerisque deflexis ; flore parvo purpu-| 
reo ; bacca obovata inermi; seminibus parvis. 
Sonora, on the Sierra Babuquibari, in fertile soil: fl. July and Au- 
‘gust. — Stems 5-6 feet high ; joints 3-4 inches long, 1) inches in 
diameter ; the swelling tubercles very prominent; spines 3-9 lines 
long, sometimes almost wanting. Flowers an inch or less in diameter. 
. 45. O. Tuursenrt, E. in B. C. R.: frutescens, erecta ; articulis cylin- 
dricis gracilibus elongato-tuberculatis ; aculeis 3-5 brevibus diver- 
gento-deflexis ; flore miniato. 
Bacuachi, Sonora: fl. June. — Much more slender than any spe- 
cies yet enumerated in this subgenus. Joints 3 inch in diameter; 
tubercles 9 lines long; spines 3—8 lines long, the lowest one the 
stoutest. Flower 14 inches in diameter. 
* * Monacanthe: lignum densum: articuli graciliores obscure tu- 
berculati : aculei singuli: flores flavi seu rubri ; semina plus minus 
marginata. 
46. O. Wricuri, E.1. c.: frutescens, erecta ; articulis cylindricis 
_gracilibus elongato-subtuberculatis ; aculeis subsingulis porrectis vel 
subdeflexis; flore miniato. 
On steep mountain-sides, from the Limpio to the Pecos, and in 
Northern Mexico: fl. June and July. — Shrub 2-4 feet high, 1-14 
Ke Snr 
Arian, Atte Oi Ler Pt AR cont 
# 
