ó06 MUSEO NACIONAL DE BUENOS AIRES. 



Hab. Rarissime in montanis prope Ancasti, Prov. Catamarca. 

 0?w. Cormns simplex (4-7 cin diam. = 2,5-4 era alt.) centro 

 lenitpr depressus non lanatus; costae rectae (5-8 mm alt.= 

 10-15 mm lat. bas.), tuberculis 4-6, supremis conflnentibus, 

 infimis eximie separatis, inaequilatei'alibus atque margine in- 

 fero saepius ± ve gibbosis efformatae; areolae valide impres- 

 sae subellipticae(3 mm long. = 1,5 mm diam.) spatio 5-7 mm 

 separatae: aculei 3-7 recti v. leniter recnrvi (7-12 mm long.), 

 centrales semper et plañe nulli; flores solitarii v. 2-3-gre- 

 garii fere e margine umbilici cormi exsurgentes (35-40 mm 

 long.) laeves extus laxe squamosi ac obcnre glanco-virides, 

 petalis pnlchre purpuréis v. roseo -purpuréis, staminum fila- 

 mentis etstylo roseo -pnrjiureis. antheris et laciniis stigmaticis 

 , ex albo oehroleucis. 



87. PfeifEera ianthothele (Mnv.) Web. = A'. Schm., 1. c, p. (ilO. 



Hah. Vulgata ad truneos arborum, Prosopidum praecipue, 

 in Santiago del Estero, Chaco, Salta, Jujui, Tucnmiín, Cata- 

 marca et La Rioja. 



88. Rhipsalis Lorentziana (IriseVi. =: (li-ish.. Synib. ad Fl. Arg., p. 

 139, n. 832. 



Hah. Non rara ad truncos arborum in silvis Catamarca, Tu- 

 cumán et Salta. 



<)b>:. CA. C. Sohumannus in Monographia Cactacearum spe- 

 ciem omisit, etsi distinctissima. Phyliocladia lanceolata (10-30 

 cm long. = 2-4 cm lat. ) distiche prolifera subteniiia (Imm 

 crass. ) jucunde viridia opaca, utrinque plus minusve longe 

 attenuata ápice obtusiuscule acutata, margine alterni-dentata, 

 dentibus obtusis (saepius 15 mm long. ) superne ángulo recto 

 truncatis ángulo interno non v. vix puberulo plaiie inermi, 

 costa mediana semper sat mauifest-a, lateralibns alternis ad 

 sinns dentium vergentibus minus perspicuis. Flores numerosi 

 ad axillas dentium solitarii, ovario omnino exerto acute tetrá- 

 gono lateribus concavis angulis subalatis (7 mm long. =4 

 mm diam.) viridi glabro laevi inermi, j)erigonio albo (8 

 mm long.) phyllis tetrastichis saepius 10, intimis subellipti- 

 ois (7 mm long. = 3 mmlat. ), staminibus ce albis, stylo erec- 

 to albo-virescente, ápice stigmatibus 4 revolutis concoloribus 

 ornato. Fructus atro-purpureus (8 mm long. = 4-5 mm diam.) 

 e globoso obtuse subtetragonus, lateribus convexis. sat suo- 

 cosus, sfMnina nigra parva 1 -3 includens. 



89. Rhipsalis squamulosa (S. D.)K, Schm. = A'. Scliiu., 1. c, p. 647. 



Hall. Non rara ad cortices arborum in silvis Chaco borealis- 



