300 MUSEO XACIOXAL DE BUENOS AIEES. 



simplicissimis, foliis latissime obovatis obtusissimis internodia 

 semper aequantibus v. superantibus recedens. 

 966. Boopis chubutensis Speg., n. sj). 



Diag. Perennh' rividis (jlaherrima, subcaespitosa^ foliis nu- 

 merosis eximie rosulatis crassiusculis carnosulis anguste linea- 

 ribus subrevohitis integris v. remote hreviterque pinnatis, ápice 

 et dentibus acidissimis mucronulatis, scapis soUtariis v. paucis 

 erectis nudis folia non v. vix aequantibus monocejjhalis, capitu- 

 lis majusculis honisphaericis, involucro 6-8 -foliato foliis ovato- 

 triangularihus acutis integris v. paucidentatis, floribus numero- 

 sis constipafis liheris, ovariis turbinatis lobis 6 anguste lanceola- 

 tis acutissimis, coroUis albis cylindraceo-turhinatis breviter 

 ó-dentatisj staminibus o ad médium tubum insertis, stylo elongato 

 exerto sursum vix subincrassatulo. 



Hah. In aridis saxosis secus Eio Clmbut, aest, 1899 (N. I,). 



Obs. Species B. squarrosae Miers peraffinis sed foliis angu- 

 stis revolutis exiinie rosulatis scapibusque brevibus recedens; 

 ambae a B. australi Done (cum qua Cl. K. Reiclie, Beitraege 

 2.. Systm. d. Calyc, p. 115 jungit) lobis calycinis acutissimis 

 lanceolatis fere subspinosulis eximie distinctae. 



Radix (an rhizomatis rami?) verticalis teres (40-80 mm 

 long. =2-3 mm crass. ) sordide albescens laevis v. in sicco ru- 

 gulosa, ápice abrupte rosulato-foliif era; folia conferta nume- 

 rosa infera patentissima arescentia, supera patentiuscula v. 

 erecta viridia anguste linearía a basi ad apicem leniter sensim- 

 que attenuata (15-30 mm long. — 1-1,5 mm lat. ) viridia car- 

 nosula, ápice acutissima pallescenti-mucronulata, margine 

 angustissime revoluta integra v. pinnati-loba v. dentata, lobis 

 V. dentibus 1-4-jugis remotissimis oppositis v. subalternis 

 subulato-linearibus brevibus (0,5-3 mm long. =: 0,3-0,5 mm 

 lat. ) acutissimis mucronulatis adpressis v. divaricatulis, basi 

 leniter tenuiterque dilatato-subamplexicaulia pallida. Scapi 

 breves crassiusculi (5-35 mm long. = 2-3 mm crass.) erecti 

 solitarii V. 2-4 ex quaque rosula monocepliali; capitula hemi- 

 spliaerica (15-20 mm diam.), involucro 5-8-pliyUo, foliolis 

 basi longiuscule connatis triangularibus v. lanceolatis (5-10 

 mm long.) acutis integris v. utrimque 1-2 -inciso -dentatis, 

 receptáculo convexulo paleis nonnullis flores subaequantibus 

 filiformibus v. angustissime subspathulatis ornato. Flores nu- 

 merosissimi, ovariis obconicis (1,75 mm long. = 1 mm lat.) 

 6-augulatis glabris, ápice lobulis 5 eximie lanceolatis (1,5 mm 



