PLANTAS NOVAE NONNÜLLAE 89 



gati (0,5-1,5" crass.), sublereles, corlice virescenle, integro, her- 

 báceo, lenuiusculo, dense lenissimeque longiludinaliler slrialo- 

 impresso, ob pruinosilateni laxissimam subcvanescenlem grise- 

 scente, ad nodos breviterdecurrenles ac prominulos subangulali, 

 ligno lenui albo, latissime albo-medullosi. Ramuli graciliores 

 (4-5'" crass.) subdivaricati, angulati, modice slrialo-sidcati, redi 

 V. subinflexi, canescenli-pruinulosi, ad apicem (praecipue) can- 

 didi, pseudotomentosi. Folia alterna, ordine pliyllotaxico 3/9, 

 ambitu magnitudineque subludentia, ramulorum basaba, pau- 

 ca, late elliptica v. subovata (15-24'" long. r= lü-15'" lat.), media 

 elliptico-ovata (45-50'" long.=: 16-20'" lat.), apicalia linearia v. 

 lineari-lanceolala (25-35'" long. = 6-8'" lat.), postice altenuato- 

 cuneata, in petiolo brevissimo (2-4'" long. = 0,7-1'" crass.), 

 subrubescente, glabro v. albo-farinoso subdecurrenli-producta, 

 antice longiuscule altenuata, obtusiusculeque aculata, vértice 

 abrupte contractulo-sublruncato, subincrassatulo ac in appen- 

 dice brevissima (1 '" long.), subd^cidua rnucroniforniiler elongato- 

 subpiicata, plana (in sicco undulata), laevissima, glaberrima, 

 epiphyllo obscure viridi, bypophjllo pallidiore, dense minutis- 

 simeque (lente valida tantunri perspicuis) pellucido-punctiilata, 

 pennineri'ia, ñervo primario in pagina infera usque ad apicem 

 prominulo, pallescente, glaberrimo, in supera parcissime im- 

 presso, secundariis tantum contra lucem perspicuis subpellu- 

 cidis, dense reticulatis, 'margine inlegerrima, zona tenuiori acuta, 

 strictissima subreflexa pallescenti-subpellucida (in sicco per- 

 fecte visibili, an semper ?) donata. Pulvinuli foliileri cum petio- 

 lis obscure articulati , mamillato-prominuli, slibdecurrentes 

 (praecipue in juventute), cano-squarrulosi, utrinque spinula tu- 

 berculiformi-conica, e latere compressula recta v. vix subincur- 

 vula (1-2,5'" long. — 2'" lat.), basi canescente, ápice obtusula ac 

 subglabrescente arraati. Inflorescentia in ramorum ápice termi- 

 nalis, paniculata, ampia (25-35" long.=r 10-15" diam.), rachide 

 primaria obscure angulata, striato-sulcala, pruinuloso-cane- 

 scente, rachidibus secundariis (oíd. 2/6), laxiusculis, iníeris ra- 

 mulosis, superis simplicibus, subpatenlibus, basi subdecurren- 

 tibus, ómnibus nonnihil supra basin (alt. 3'") dorso folium plus 

 minusve evolutum (in inferis foliis ramulorum apicalibus simil- 

 limum, in superis subbracteiforme lineari-subulatum 3-0'" 

 long. =0,5-1'" lat.) gerentibus, supremis vix exceptis; spinulis 

 slipularibus omnino desunt. Flores mediocres (6-7'" long.) in 



AN. SOC. CIENT. ARG. T. XVI. 



