34(1 CACTEAE. 



5161. OPUNTIA Tournef. 

 (Pfeiff. Enutn. diagnost. Cacl. 143.) 



I. .. , ,,. l conferlis %. \. Glomeratae. 

 Arlicul. cylin-J 

 I divaricatis.... §. 2. Divaricatae. 

 Arlicul. comprcssis lalis §. 3. C'ompres»o-arlicula(ae. 



* Glabratae. 

 ** Pulvinatae. 

 *** Criniferae.l 

 **** Aculeatae. 



( compresso §.4. Cruciatae. 



Caulc inarlicu- I / ramulis com- 



Isto 1 \ pressis §. 5. Paradoxae. 



lereti < i- 



' iramulis cy- 



\ lindricis.... §. 6. Cylindraceae. 

 §. 1. Glomeratae. Caulc articulato, humili, articulis cylindraceis 

 subglobosis vel ovatis, aculeis selaceis aut rigidis. 



1. 0. SULPHUREA Gill. mss. in Horl. Dyck, p. 300. — Pfeiff. 1. c. 144. f — Arliculis 

 ereclis subglobosis laete- viridib.; areolis subconfcrtis; aculeis biformib. e to- 

 mento pallido, superiorib. selaceis alro-purpureis minutissimis, penicillalim col- 

 lectis, inferiorib. C-12 elongalis acicularib. albidis, apice purpureis, ccntrali lon- 

 gissimo. — In Cliili. 



2. O. OVATA Pfeiff. 1. c. 144. — Arliculis viridib. gjabris ovatis; areolis approxi- 

 matis magnis pulvinalis, densissime fusco-lanuginosis; aculeis 7-8 inaequalibus 

 rigidis rectis, junioribus fuscescenlibus, tandem albis. — Crescit in Andibus Chi- 

 lensibus ad Mendozam. 



3. O. COllRUGATA H. Angl. — Hort. Dycli. p. 360. — Pfeiff. 1. c. f — Articulis 

 ereclis cylindraceis, utrinq. attenualis, laete-viridib.; areolis confertis; aculeis bi— 

 formib., subradianlib. c tomeiito pallido, superiorib. setaceis minutissimis fulvi- 

 cantibus, inferioribus 6-8 elongatis acicularibus albis. — Crescit ? 



4. 0. PUSILLA S, Dyck, Observ. botan. 1822. p. 10. — Pfeiff. 1. c. 145. f — Pro- 

 strata divaricata, sordide virens : articulis cylindraccis cucumcriformib.; fasciculis 

 spinarum approximatis; spinis setaceis albis, quibusdam elongatis erectis. — In 

 America calida. 



5. 0. LONGISPINA Haw. Philos. Magaz. 1830. p. 109. — Pfeiff. I. c. — Articulis com- 

 presso-tereliusculis; spinis purpurascentib. aliisq. minorib. fulvis, unaque lenui 

 tereti, anliquissima triunciali. — In Andibus Chilensibus ad Mendozam. 



6. O. GLOMEIIATA Haw. Philos. Magaz. 1830. p. 109. — Pfeiff. I. c. f — Ramis 

 caespitose confertis; spinis centralib. solilariis linearib. acuminatis, utrinq. planis 

 longissimis. — In Andibus Chilensibus ad Mendozam. 



7. O. ANDICOLA H. Angl. — Pfeiff. I. c. — Proslrala ramosissima: articulis cucu- 

 meriformib. elongalis, apice attcnuatis, brunneo-virenlib. nitidis, tandcm lignosis; 

 areolis subconfertis setosis; aculeis 3-4 gracilib. albis subrigidis, 1-2 longiorib. 

 albis, basi applanatis. — O. horizontalis Gill. — Crescit in Andibus Chilensi— 

 bus ad Mendozam. 



8. O. TUBEROSA H. Angl. — Pfeiff. 1. c. 146. — Arliculis cylindraceis divaricalis 

 brunneis imbricalo-tuberosis; areolis minutis albis in luberculorum vertice; acu— 

 leis 7-8 brevibus setaceis albidis. — Articuli 2-3 poll. longi, 4 lin. diam. Foliola 

 minula brunnea. — O. alpina Gill. — /9. spinosa: — 0. platyacaniha H. Angl. — 

 Aculeis pluribus et longioribus, nonnullis applanatis. — In Chili ad Mendozam. 



9. O. MESACANTHA Nutt. mss. ex Seringe, Bullet, 1831. p. 216, — Linnaea VIII. 

 Literbl. p. 81. — Pfeiff. 1. c. 146. — Humilis decumbens: arliculis subrotundis; 

 spinulis fasciculatis rufescentibus, spina centrali fuscala longiore, — Calyces 

 fructusq. ovati soliiarii, squamis carnosis spinosis; flores lulei. - Kenlucky, 



