| Habernia |
uruguayensis |
| Habranthus |
andalgalensis, calderensis, correntinus, gracilifolius, guachipensis, jamesonii, martinezii, matacus, mendocensis, neumannii, pictus, riojanus, ruizlealii, salinarum, sanavirone, schulzianus, venturianus |
| Halophytum |
ameghinoi |
| Halosicyos |
ragonesei |
| Hamadryas |
argentea, delfinii, kingii, magellanica, sempervivoides |
| Haplopappus |
boelckei, diplopappus, mendocinus, pectinatus |
| Haylockia |
andina |
| Hedeoma |
medium |
| Helenium |
argentinum, donianum |
| Helictotrichon |
bulbosum |
| Heliotropium |
auratum, catamarcense, chrysanthum, johnstonii, kurtzii, mendocinum, patagonicum, pinnatisectum, ruiz-lealii |
| Heteropterys |
schulziana |
| Heterostachys |
olivascens |
| Hickenia |
scalae |
| Hieracium |
achalense, argentinense, astroadenium, burkartii, catamarcense, chacoënse, champaquiense, cienegae, cordobense, criniceps, eriadenium, giganteum, gilliesianum, jaretanum, kieslingii, lorentzianum, luteomontanum, mendocinum, neofurcatum, niederleinii, petrophyes, sordidum, streptochaetum, subargentinense, tandilense, tucumanicum, vervoorstii |
| Hierochloë |
pusilla |
| Hieronymiella |
aurea, caletensis, clidanthoides, speciosa |
| Hippeastrum |
aglaiae, argentinum, parodii |
| Hoffmannia |
australis |
| Hoffmannseggia |
doellii, erecta, pumilio , trifoliata |
| Holocheilus |
fabrisii |
| Hordeum |
cordobense, erectifolium, flexuosum, fuegianum, lechleri, parodii, patagonicum, procerum |
| Huarpea |
andina |
| Huperzia |
saururoides |
| Hyalis |
argentea |
| Hyaloseris |
andradelimae, cinerea, rubicunda |
| Hybanthus |
leucopogon, serratus |
| Hydrocotyle |
cryptocarpa |
| Hymenophyllum |
quetrihuense, umbratile |
| Hymenoxys |
cabrerae |
| Hypochaeris |
argentina, caespitosa, chubutensis, grisebachii, montana, pampasica, patagonica, petiolaris |
| Hypoxis |
catamarcensis |
| Hyptis |
australis |
| Hysterionica |
aberrans, bakeri, cabrerae, dianthifolia, glaucifolia, pulchella |
