214 MUSEO NACIONAL DE BUENOS AIEES. 



tis crassis paucifolüs stellato-pulverulentis, raeeniis eloiiga- 

 tis multifloris, siliciilis pedicello rachi adpresso semioer plus- 

 minusve longiore stellato-2iul)erulo suffultis, siliculis lanceola- 

 tis (5-7 mm, long. — 2,5-3 mm lat.) glaberrimis viriclibus siib- 

 nervosis, stylo persistente gracili elongato (2-3 mm long.) 

 armatis. 



A. Dr. arattcana Pli., siliculis immatnris piiberulis donata., 

 an satis recedens? 

 768. Draba chubutensis Speg., n. sp. 



Diag. Elata, caespüosa, tota laxissime pulverulento -pithe- 

 scens, pilis ómnibus stellatis, foliis in innovationíbus subfascicu- 

 latis oblanceolatis pro ratione majuscuUs integerrimis longe 

 attenuato-petiolatis, cauUnis paucis inajoribus elUptico-ovatls 

 integris r. repando subdentatis, scapis ralidis ramosis, raeeniis 

 praelongis lajcis, siliculis pedicello seniel c. ter ipsas aequante 

 suffultis, glaberrimis subparvis planis stylo dimidio fere breviore 

 armatis. 



Hah. In collinis editioribns Teka- choique, aest. lüüü 



(N.I.). 



Obs. Species eximia etsi Dr. magellanicae Lam. et Dr. 

 araucanae Ph. certe affinis, statura et magnitudine omninm 

 partium mox dignoscenda. Eadix robusta teres (7-15 ciu 

 long. = 3-5 mm diam. ) dense ramoso -fibrosa albescens; scapi 

 floriferi pauci simul cum innovationibus sterilibus numerosis 

 ad collum radiéis, erecti (25-50 cm alt. = 2,5-3,5 mm crass.) 

 laeves, laxe pulverulento -puberuli, pilis ómnibus stellatis,. 

 in tertio v, dimidio infero nudi simj^liees ceterum laxe pa- 

 tentiusculeque ramosi, ramis arcuato-adscendentibus óm- 

 nibus floriferis, ad basin foliis sessilibus late ovatis inte- 

 gris v. obsolete denticulatis (1-5 cm long. =5-20 mm lat.) 

 subglabratis v. parcissime pubescentibus suffultis; innovatio- 

 nes steriles plures (3-8) erectiusculae (50-100 mm alt.) in 

 tertio infero subnudae v. foliis paucis arescentibus ornatae, 

 sursum sensim densius foliosae, foliis oblanceolatis firmule 

 membranaceis (30-50 mm long. cum pet. = 5-8 mm lat.) 

 planis antice obtuso subacutatis, deorsum sensim in petiolo 

 limbum subaequante latiusculo cuneato-attenuatis. Flores 

 pedicello vix breviore v. saepius longiore erecto pulverulento- 

 puberulo fulti, erecti subparvi (5 mm long.), sepalis ovatis 

 (2,5-3 mm long.) herbaceis obtusiusculis puberulis, petalis 

 albis spathulatis (5 mm long.) glabris, staminibus parum 



