280 ANALES DE LA SOCIEDAD CIENTÍFICA ARGENTINA 



Obs. Species pulcherrima ab ómnibus bujus sectionis distinc- 

 tissiraa. Radix nodiformis brevissitna íibris numerosissimis 

 crassis longiusculis (50-100 mmlong. = 1-1,5 mm crass.)sim- 

 plicibuscomata; foliaelliptica v. oblauceolata(80-IOOmm long. 

 =20-28 mm lat.) lirrne membranácea in siceo rígida, intense vi- 

 ridiasaepeque purpureo-tincta, antice subrotundato-cuneala 

 deorsum longiuscule attenuato-petiolata, petiolo quam limbus 

 triplo breviore, 5-7-nervia, ad epiphyllum glaberrinia; od hy- 

 pophyllum in prima juventute pubescenti-hiftella, dein per 

 aetatem glabra ta ad ñervos tantum puberulo-villosa ima bas 1 

 parce atque sluppose-submembranosa barbala, margine inte- 

 gerrimav. ulrimque obsoletissime 1-2 subrepando-denticulata, 

 aciesaepiuspurpurascenteacciliolata ; scapi plures (2-5) erecti 

 rigidi robusti (130-150 mm long. = 1,5-2,5 mm diam.) lae- 

 ves v. obsoletissime rotunda to-angulosi purpurei, in dimidio 

 infero glabri, in dimidio sapero sensim magis canescenti- 

 villosi, vi II i s asperis adpressis albis; spicae cylindraceae 

 erectae(60-IOO mm long. = 6-8 mmdiam.),axi villoso,conferti- 

 íloris, bracteis lanceolatis suboblusiusculis acute carinatis (3 

 mm long. = 1,25 mm lat. bas.) obscure purpuréis, margine 

 ¡inguste scarioso-albescentibus atque pectinato-ciliatisut saepe 

 in carina etiam ; sépala elliptica '2-2,25 mm long. = 1 ,5 mm 

 lat.) glaberrima obtusa non v. parce carinata, purpurea, 

 margine anguste albido-scariosa, áulico saepius ceteris pa- 

 rum breviore; corolla glaberrima, lobis semper conico-conni- 

 veutibus melléis lanceolatis fusce l-nervibus mucronulatis 

 3-3,25 mm long. == l,5-2mm lat.), stylo tenui glabro longis- 

 sime exerlo (5 mm long.) ornata. Capsula calyce corollaque 

 persistenle vestita glaberrima, 2-loculari, lóculo postico 2- 

 spermo, antico l-spermo; semina elliptica badia v. lateritia 

 glabra opaca (1,5-2 mm long. = I 1,25 mm lat.) margine 

 acula utrimque obtusa, dorso convexula, ventre plana atque 

 saepius macula umbilicali cinérea majuscula notata. 



474. Tricycla spinosa Cav. = Heimerl, Monogr. Nyctagin., p. 20. 

 Hab, Vulgata in aridis secus Rio Negro prope Carmen de Pata- 

 gones, Febr. 1898 (C. S.), el rarius secus Rio Chubut, aest. 

 1900 (F. Basaldua). 



475. Herniaria hirsuta L. = DC, Pr. III, p. 367. 



