Revista de la Facultad 
109. Margyricarpus patagonicus Speg. (n.sp.). 
Diag. Tetraglochin, inermis, fruticosus, prostrato-caespitosus, 
ramis foliis vetustis arescentibus vestitis, ramulis novellis longiu- 
sculis dense fasciculato-foliiferis, foliis glabris, pericladio subauricu- 
lato ciliato-villosulo, imparipinnatis, foliolis strictissime linearibus 
remotiusculis acutis integerrirnis, revolutis; fructus coriaceo-sicci, 
ochroleuci axillares solitarii obovati, acute trigoni sed non alati 
angulis non v. vix subdenticulatis, lateribus convexulis irregular! • 
ter subrugosis. 
Hah, In planitie glareosa siccissima prope Santa Cruz^ anno 
1882 (C. S.) et prope Golfo de San Jorge anno 1896 fC. A ). 
Obs. Frutex parvulus quandoque prostrato diífusus quandoque 
caespitoso erectus, ramis (15-30 cnt long. = 2-5 mm crass.) dense 
ramulosis, vaginis rachidibusque foliorum annorum praeteritorum 
arescentium fusco-cinerascentium fragilium non v. vix rigido sub- 
spinescentium adpressorum v. modice arquato patulorum dense 
imbricato- vestitis, ramulis novellis longiusculis (10-80 mm long.) 
erectis foliosis viridibus; folia (lo- 20 mm long.) dense imbricata' 
erecta ramululo adpressa, pericladio valide costato-subcarinato lan- 
ceolato late vaginante (4-5 mm long. = 2-2,5 lat.) glabro subsca- 
riosulo, ápice hyalino truncato-auriculato, auriculis parce ciliato- 
villosis, petiolo nullo v. brevissimo, rachide glaberrima tenui, impa - 
ripinnata; folióla 3-4-juga (impari exclusa), infera subalterna remota 
minuta, apicem versus gradatim majora subopposita magis aproxi- 
mata, non patentia, strictissime linearla (2-5 mm long. = 0,3-0,5 
mm lat.) ápice acuta saepe setula plus minusve longa hyalina 
appendiculata, basi sessilia, subtruncata viridia glaberrima rigida 
integerrima; flores non visi; fructus glabri ochroleuci coriacei sicci, 
obovati (6 mm long. = 2,5-3 mm lat ) antice breñter rotundato- 
acutati , postice longe attenuato cuneati trigoni, angulis acutis non 
v. vix subalatis, non v. minute et vix 3-4 subdenticulatis, faciebus 
Ínter ángulos planis v. convexulis, laevibus v. rugulosis, ápice 
lobis calycinis ovatis utrinque acutiuscule obtusatis (1,5 mm long. 
= 0,7 -1 mm lat.) virescentibus reflexis (staminibus purpurascentibus 
saepe additis) coronati. 
Species habitu M. setoso R. & P. nec non M. alato Gilí, sat si- 
milis, notis tamen perplurimis bene distincta. 
Genus Margyricarpus R. & P. in sectionibus tribus eximie divi- 
dendum: 
a¡ Eumargyricarpits, fructibus drupaceis carnosis sessilibus soli- 
tariis. 
b¡ Tetraglochin, fructibus nucamentaceis plus minusve alatis 
c¡ Pseudacaena. fructibus nucamentaceis plus minusve spinoso-hor- 
ridis. 
lio. Margyricarpus Ameghinoi Speg. (n.sp.). 
Dtag. Tetraglochin, strictus, fruticulosus, petiolis subspinescen- 
