56 ANALES DE LA SOCIEDAD CIENTÍFICA ARGENTINA 



minute-mucronulalis (2-2,5 mm long. = 0,8-1 mm lat.), 

 petiolis nullisv. brevissimis in pericladio membranáceo limbo 

 aequilongo v. longiore ovato latissimo vaginanle, margine 

 integerrimo, non denticulato nec ciliolato ampliatis. Flores 

 glaberrimi ex axillis foliorum supremorum solitaria exsur- 

 gentes et pseudoacrogeni, pedúnculo brevissimo pericladium 

 fulcrans breviore, medio bracteolis (involucro) linearibus 

 pusíllis angustis acutis 3 ornato fulti, ovario ovato, calycis 

 dentibus minimis^ petalis virescentibus ovatis, staminibus 

 brevibusflavidis,styIopodiisconoideisparvu]isdonati. Fructus 

 ovati (4 mm long. = 3 mm lat. bns.), basi non v. vix sinuati, 

 sursum rotundato-cuneati, dorso planiusculi v. concaviusculi 

 laeves, margine acutissime angulato-alati. 



156. MuLiNUM PATAGONicuM Speg., n. sp. 



Diag. Perenne caespitosum glaberrimum, foliis mediocribus erec- 

 tiusculis imbricalis trifidis, petiolo gracili limbo breviore in 

 pericladio vaginante basi amplíalo suffuUis, umbellis pseudoa- 

 crogenis paucifloris brevissime pedunculatis, involucro minuto 

 3-5-phyllo, fructibus pedicellos duplo aequanlibus pyramidato- 

 ovatis. 



Hab. In rupestribus montanis prope Lago Nahuel-Huapi, Dec. 

 1897 (C. S.). 



Obs. Caudices lignosi crassi (5-15 cm long. = 5-15 mm crass.) 

 cortice atro-fusco ruguloso-scrupuloso tectis, ápice abrupte 

 densiusculeque ramoso- intricati atque caespites hemisphae- 

 ricos (5-15 cm diam. et alt.) laxiusculos efficientes. Folia 

 glaberrima imbricata, in parte ramorum infera arescentia 

 nigrescentia subrelaxata, in supera conferta viridia, limbis 

 triangulari-cunealis (5-7 mm long. = 4-5 mm lat.) tripartitis, 

 laciniis linearibus ápice attenuato-mucronatis planiusculis, 

 dorso non v. obsolete nervoso-striatis, ventre valide sulcato- 

 nervosis, postice in petiolo plus minusve abbreviato et gracili 

 (2-3 mm long. = 1-1,5 mm lat.) attenuatis, basi in pericladio 

 ovato vaginante (2-3 mm long. et lat.) pallescente margine 

 utrimque in juventute ciliis 3-5 longiusoulisornato, peraetatem 

 nudo amplatis. Umbellae ex axillis foliorum supremorum 

 exsurgenles, pseudo-acrogenae, pedúnculo folium fulcrans 

 non aequante (3-4 mm long.) donatae, involucro 3-5 parlito 

 laciniis linearibus acutis pedicellos aequantibus v. leniter 



