﻿3-1G Plántete novcie nonnitllae. 



plurimi.rosulatim effusipulvinulos irregulariter orbicula- 

 res confertiusculos (10-30 cm diam. ) efficientes, glaber- 

 rirni, pallescentes v. plus minusve rubicuudi, in vivo lae- 

 ves v. obsolete striati, in sicco sulcati (5-20 cm long. = 

 2-3 mm crass. ), parce ramosi, internodiis inferís elongatis, 

 superis sensim abbreviatis, supremis brevissimis. Folia ad 

 nodos alterna glaberrima patentiuscula, firmule v. sub- 

 rigidule membranácea, limbis parvulis (5-10 mm long. 

 = 2,5-8 mm lat. ) lanceolatis, ovatis, ellipticis v. suborbi- 

 cularibus saepius complicatis ápice acutiusculis v. obtu- 

 sis, vix mucronulatis, margine dense minuteque crispa- 

 to-undulatis, basi sensim v. abrupte cuneatis, ad epiplryl- 

 lum obscure viridibus, ad hypophyllum subeinereis, va- 

 lidiuscule pallideque pinnato-nervosis, petiolis limbum 

 plus minusve aequantibus, dorso subcarinato-angulatis, 

 ventre canaliculatis. Glomeruli omnes axillares postici 

 relaxati, superi conf ertissimi et racemum linearem f olio- 

 sum simulantes, subglobosi pallide virescentes. Flores 

 pusilli (1 mm long.) bracteolis 2 minimis linearibus suf- 

 fulti sessiles sepalis eximie spathulatis .antice obtusissi- 

 me lateque rotundatis minute mucronulatis subhyalinis, 

 tenuissime 1- nervoso -viridibus, glaberrimis, foemineis 

 persistentibus, post anthesin leniter accrescentibus ; sta- 

 mina florum masculorum 5, filamentis albis vix sepalis 

 longioribus subulatis glabris a base liberis; ovarium len- 

 ticulari-ovatum glabrum laeve, stylis 3 a basi liberis co- 

 ronatum. Utriculus perianthio suffultns, non v. vix exer- 

 tus subrugulosus (1,5-1,75 mm long. et lat. = 1 mm crass.) 

 membranaceus glaber, ápice acutiusculus atque mucro- 

 nulis subimperspicuis 3 coronatus; semen lenticulare 

 (1 mm long. et lat. =0,60 mm crass.), atro-castaneum 

 laevissimum nitidissimum, margine acute rotundatum. 

 Species vulgata in aridis subsabulosis totius f ere E-eipubli- 

 cae Argentinae, Amarantho undulato R. Rr. certe affinis. 

 23. Atriplex argentina Speg., n. sp. 



Diag. Obione, tota cinéreo -sitb argéntea, fritticosa, mo- 

 noica, rigidule ramosa, inermis, ramulis tetragonis, foliis 

 altemis v. oppositis oblanceolatis v. spathulatis cuneato- 



