OPUNTIEAE. 
65 
§. 1 . Cruciata, Caule erecto , continuo articulisque 
lateralibus cruciatim oppositis compressis; pulvillis 
confertis; aculeis numerosissimis , gracilibus , elonga- 
tis , pungentibus , rarissime deficientibus. 
( Inermes . 9 
0. rubescens IVob. Pfr. Enum. p. 166. 
Aculeatis simce.) 
0. cathocantha H. Berol. Pfr. Enum. p. 166. 
— spinosissima Mill. Pfr. Enum. p. 166. 
— ferox Haio. Pfr. Enum. p. 167. — Cact. ferox Willd. 
— leucacantha H. Berol. Pfr. Enum. p. 167. 
/?. laevior Nob. — 0. subferox Schott. 
§. 2. Ellipticae. Caule articulato , erecto vel prostra- 
to , articulisque compressis , plus minusve ellipticis , 
magnitudine variis; pulvillis , prceter tomentum , se/ts 
diversiformibus instructis , aculeisque validis fulvis , 
flavidis vel albidis , raro deficientibus. 
* Crinitae. Arliculis erectis compressis; pulvillis confertis, 
setis longissimis, sericeis vel criniformibus , tortis (in plantis 
senectis interdum evanidis) aculeisque gracilibus instructis. 
0. leucotricha DC. Pfr. Enum. p. 156. (4.) 
— lanigera Nob. — 0. crinifera. Pfr. Enum. p. 157. — 
0. Pintadera Hort. ( 5 .) 
— fulvispina Nob. Pfr. Enum. p. 164. — 0. crinifera 
§. lanigera Pfr. 1. c. 0. senilis Parmt. ( 6.) 
/?. badia Nob. 
* Flllvispinoe. Articulis erectis, perviridibus, saepe validis- 
simis; pulvillis remotis vix setulosis , aculeis rigidissimis su- 
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