NOVA ADDENDA AD FLORAM PATAGONICAM 289 



abrupte denseque botrjoso-ramosi ac coespites subhemi- 

 phaer¡cos(5-IO cm alt.) efficientes; rami erecti subsimplices 

 (8-15 mmlong. =3-4 mm diam.), alteri abbreviati foliiferi, 

 alterielongali folio-scapigeri, sed omnes fértiles. Folia parvu- 

 vula (15-30 ram long. = 5-7 mm lat.), basi pericladio ovalo 

 (7-9 mm long. = 5-6 mm lat.) amplexicaule subscarioso gla- 

 berrimo e lúteo v. ferrugineo aurantio margine longiuscule 

 subpectinatimque albo-ciliolato v. piloso, sursum sensim in 

 petiolo attenuato donata, petiolo gracili (10-20 mm long.) in 

 tertia parte infero nudo, ceterum foliolifero, dorso convexulo, 

 venlre applanato adpresse pubescenti-canescente ; foliolis 5-1 1 

 adpresse denseque argenteo-serniceis sessilibus subconfertis 

 (Ínter juga 2-4 mm long.) a basi apicem versus sensim majo- 

 ribus, infimis minimis (1-1 ,5 mm long. = 0.5-1 mm lat.) sim- 

 plicibus, mediis (2-3 mm long. = 1,5-3 mm lat.) bifidis v. 

 trifidis, supremis (4-5 mm long. = 3-5 mm lat.) 5-ridis v. 

 melius tripartitis, lóbulo medio tridentato, lateralibus bifidis, 

 lobis ómnibus planis ellipticis v. oblanceolatis ulrimque obtu- 

 siuscule acutatis. Flores dimorphi, alteri tantum foeminei (an 

 semper?) ovario irregulariter triangulari applanato, sepalis 

 ellipticis sericeis pusillis, in axillis pericladiorum solitarii v. 

 2-5-glomerulati absconditi, alteri normales hermaphroditi 

 ovario ellipsoideo spinuloso pubescente sepalis ovatis extus se- 

 riceis mediocribus, staminibus 2 et stylis plumosis purpuréis 

 exertis donati, in scapis interrupte glomerati. Scapi erectiu- 

 sculi (5-8 cm long.) teretes gráciles, laeves v. obsolete striati, 

 e virescentepurpurei, glabri v.laxe adpresse autpatule pilosu- 

 li, bracteisovatisamplexicaulibus ma]'usculis(4-5 mm long. = 

 2 mm lat.) dorso canescentibus 1-4 (saepius 2) remotis donati, 

 ad axillas bractearum 1-5-flori, ápice capitulum 8-16 florum 

 ellipticum V. subglobosum (6-10 mm long. =5-6 mm diam.) 

 gerentes. Fruclus dimorphi ; alteri in axillis pericladiorum 

 1-5 absconditi glabri v. vix pulverulento-puberulie lutescente 

 ferruginei obovato-triangulares (4-5 mm long. = 3 mm lat.) 

 compressissimi dorso non v. obsolete nervoso-subcarinati, po- 

 sticeattenuato-acutissimi, margine angustesubalati atque irre- 

 gulariter denliculalo-aculeati aculéis planiusculis (rectis v. 

 subruncinatis), brevibus minute puberulo-glochidiatis, calyce 

 minutissimo persistente coronati ; alteri scapicolae elliptici v. 

 ovati (3-4 mm long. = 2-2,5 mm diam.) e virescente minute 



AN. SOC. CIEXT. ARG, — T. XLVIl 19 



