34. 
Subgen. 2. Pratoruntia, E. 1. c. Articuli complanati: flores 
magni: bacca pulposa vel rarius sicca: semina late marginata : em- 
bryo plusquam circularis circa albumen parcum spiraliter convolutus : 
cotyledones semper contrariz. aa 
§ 1. Microcarpee : suberecte : aculei plurimi, colorati: bacca parva 
subglobosa. 
2. O. Srricit, E. in B. C. R.: suberecta, articulis ovatis orbicu- j 
latisve; pulvillis confertis; aculeis 5-8 radiantibus deflexis rufis 
apice flavis; bacca parva late umbilicata rubra; seminibus parvis 
anguste marginatis. 7 
Between the Pecos and El Paso. — Plant 2 feet high ; joints 4-5 
inches long ; spines an inch or less in length. Fruit 6—7 lines long. 
§ 2. Grandes: erecte seu procumbentes: articuli magni: aculei 
pauci, validi, compressi, plerumque colorati: bacca major vel mag- 
na, plerumque ovata. 
* Subinermes. t 1 
eytrienel h fe 3. O-Frevs-txnrex, Mill: cultivated south of the Rio Grande, un- 
' der the name Nopal Castillano. 1 
« * Flavispine. 
+ Erecte. 
ae pono 4. O. Texa, Mill: cultivated about the old missions in the southern 
parts of Upper California, under the name Tujia. Specimens gath- 
ered at Beaufort, on the coast of South Carolina, (probably introduced,) 
may-belons-herer ay. Arve“, OC: By Leor<s 
he, tea sexe 5, O. ENGELMANNI, Salm: erecta, grandis; articulis obovatis ; pul- 
cee villis remotis setas stramineas rigidas inzequales aculeosque 1-3 com- 
rd . 
pressos stramineos basi rufos gerentibus ; floris flavi intus rubelli ova- 
rio subgloboso; stigmatibus 8-10; bacca obovata late umbilicata ; 
seminibus minoribus. ) 
From the Canadian River to the mouth of the Rio Grande, and 4 
westward from the Gulf to Chihuahua and El Paso: fl. May and | 
June. — Plant 4—6 feet high ; joints a foot long or less ; leaves subu- 
late, 3-4 lines long; larger spines 1-14 inches long. Flower 23 : 
—3 inches in diameter. Fruit usually 2 inches long, 1} in diameter, | 
juicy, but of a somewhat nauseous taste. Seeds 14 — 2 lines in diam- 
eter. A plant observed by Dr. Blackie on Bayou Beeuf, Western Lou- 
isiana, 54 feet high, joints 9 inches long, reddish-yellow flowers, is 
probably this species. 
