140 ANALES DE LA SOCIEDAD CIENTÍFICA ARGENTINA 



tis tubo cylindracéo, lubis mox refractis linearibus subulato-in- 

 volutis tubo tríente brevioribus acutis, staminibus ovarioque 

 glabris; bacca ignota. 



Hab. In aridis saxosis secus Rio Deseado, veré 1899 (C. A.). 



Obs. Species J. Bergii Hiern. aífinis sed bene distincta, a J. rna- 

 gellanica (Grsb.) HBgpl. longius abhorrens. Radix verticalis 

 sordide alba (75-150 mm long. = 7-1 rain crass.), parurn ra- 

 mosa ápice abrupte multiceps. Caules arcuato-adscendentes 

 serius procumbentesex albo-virescente pallide purpurascentes 

 glaberrimi v. in prima juventute subpuberulo-pulverulenti 

 subteretes v. obsolete angulati (50-150 mm long. = 1,5-2 mm 

 crass.) inferné longenudi, sirnplices v. parum ramosi in di- 

 midio v. tertiosupremo remote foliosi. Folia opposita v. terna- 

 ta erecta radical i a longiuscula (50-80 mm long.) caulina bre- 

 viora (20-30 mm long.), limbis circumscriptione ovatis (10-30 

 mm long. = 7-20 mm lat.) abrupte pinnatipartitis, lobis mo- 

 dice aproximatis, 2-4 utroque latere, oblanceolatis (5-10 mm 

 long. = 2-3 mm lat.), saepius alternis acutis, simplicibus 

 v. saepius irregulariter 2-3-dentatis, dentibus minute valide- 

 que mucronulatis, utrachi planiuscula albicla in dimidio su- 

 pero anguste alata glaberrimis v. sub lente valida minute pul- 

 verulento-pruinulosis, petiolis applanatis glabris radicalium 

 elongatis (40-50 mm long.), caulinarum limbo vix aequanti- 

 bus (10-20 mm long.). Flores jam ante anthesin cernui ad 

 axillas foliorum pnuci-glomerati, rarius solitarii, pedicel lis 

 basi bracteola spalhulata v. lineari-oblanceolata integra v. 1-2 

 denticulata (10-15 mm long. = 1,5-2 mm lat.) ornatis gracil- 

 limis petiolos aequantibus v. parum superanlibus (15-20 mm 

 long. = 0,35 mm crass.) glaberrimis mox arcuato-deflexis vi- 

 ridibus suffulti; caljx hemisphaerico-subcampanulatus (3 mm 

 lat. et long.) glaber v. sub lente valida obsolete pulverulentus 

 viridis, 5-íidus lobis e basi late triangulan' subulato-acutissi- 

 mis; corollae albo-viridis glaberrimae clausae calycem triplo 

 superantes (9 mm long.), tubo cylindracéo (5-6 mm long. = 

 2-2,5 mm diam.), lobis anguste triangulari-linearibus mox 

 reflexis revoluto-subulatisque acutis (3 mm. long.), slaminum 

 filamentis parum sub fauce adfixis glabris tenuibus, antberis 

 ovatis ílavis vix e fauce prominulis, ovario hemisphaerico viride 

 glabro stylo brevi (2 mm long.) ápice viride clavulato coronato. 

 Baccaedesunt. 



