| Nardophyllum |
bracteolatum, cabrerae, chiliotrichioides , deserticola |
| Nassauvia |
ameghinoi, argyrophylla, chubutensis, falklandica, fuegiana, gaudichaudii, glomerulosa, hillii, juniperina, latissima, maeviae, magellanica, pentacaenoides, planifolia, pulcherrima, ruizii, sceptrum, serpens, sublobata, ulicina |
| Nassella |
arcaënsis , argentinensis , brachychaetoides, brachyglumis, burkartii, carretei, catamarcensis, clarazii, cordobensis , curamalalensis , entreriensis, fabrisii, famatinensis, formicarum, glabripoda, hunzikeri , macrotricha, meyeri, nidulans, niduloides , novari, pampeana , paramilloensis , parva, pseudopampagrandensis , psittacorum , ragonesei, sanluisensis , stuckertii , tenuis, tenuissima, uspallatensis, ventanicola, yaviensis |
| Nastanthus |
falklandicus, patagonicus, scapigerus |
| Neobaclea |
crispifolia |
| Neobouteloua |
paucirracemosa |
| Neoporteria |
andreana , bulbocalyx, strausiana, umadeave , villicumensis |
| Neosparton |
aphyllum, darwinii, ephedroides, patagonicum |
| Neuontobotrys |
choiquense , frutescens , mendocina , polyphylla, robusta |
| Nicoraepoa |
erinacea, pungionifolia, subenervis |
| Nicotiana |
acaulis, ameghinoi, longibracteata, paa, spegazzini |
| Nierembergia |
calycina, ericoides, rigida, tandilensis, tucumanensis, veitchii |
| Nitrophila |
australis |
| Nothoscordum |
achalense, albitractum, altillanense, arenarium, basalticum, bivalve, calderense, conostylum, correntinum, entrerianum, gaudichadianum, glareosum, itatiense, moconense, nudum, patricium, punillense, saltense, tafiense, tenuifolium, tricostatum, velazcoënse, yalaënse, yatainum |
| Noticastrum |
argentinense |
| Notiosciadium |
pampicola |
| Notocactus |
submammulosus |
| Nototriche |
cabrerae, caesia, cajonensis, calchaquensis, castillonii, chuculaensis, copon, famatinensis, friesii, glabra, hieronymi, hunzikeri, kurtzii, lorentzii, macrotuba, niederleinii, ovata, pulvilla, rohmederi, sleumeri, tucumana, viridula |
