| Family | subfamily | Genus | Species | |
|---|---|---|---|---|
| Plantaginaceae | Globularia Tourn. ex L. | Globularia arabica Jaub. & Spach | Details | |
| Leguminosae (Fabaceae) | Papilionoideae (Faboideae) | Glycyrrhiza L. | Glycyrrhiza glabra L. | Details |
| Compositae (Asteraceae) | Asteroideae | Gnaphalium L. | Gnaphalium polycaulon Pers. | Details |
| Compositae (Asteraceae) | Asteroideae | Gnomophalium Greuter | Gnomophalium pulvinatum (Delile) Greuter | Details |
| Apocynaceae | Asclepiadoideae | Gomphocarpus | Gomphocarpus fruticosus (L.)W.T.Aiton | Details |
| Apocynaceae | Asclepiadoideae | Gomphocarpus R. Br. | Gomphocarpus sinaicus Boiss. | Details |
| Amaranthaceae s.l. | Amaranthoideae | Gomphorena L. | Gomphrena celosioides Mart. | Details |
| Malvaceae s.s. | Malvoideae | Gossypium L. | Gossypium herbaceum L. | Details |
| Compositae (Asteraceae) | Asteroideae | Grangea Adans. | Grangea maderaspatana (L.) Poir. | Details |
| Tiliaceae [ Family (APGIII): Malvaceae s.l. ] | Grewioideae | Grewia L. | Grewia tembensis Fresen. | Details |
| Tiliaceae [ Family (APGIII): Malvaceae s.l. ] | Grewioideae | Grewia L. | Grewia villosa Willd. | Details |
| Malvaceae s.l. (Tiliaceae) | Grewioideae | Grewia L. | Grewia tenax (Forssk.)Fioir subsp. tenax | Details |
| Compositae (Asteraceae) | Gymnarrhenoideae | Gymnarrhena Desf. | Gymnarrhena micrantha Desf. | Details |
| Caryophyllaceae | Paronychoideae | Gymnocarpos Forssk. | Gymnocarpos decander Forssk. | Details |
| Caryophyllaceae | Paronychoideae | Gymnocarpos Forssk. | Gymnocarpos sclerocephalus (Decne.) Dahlgren & Thulin | Details |
| Celastraceae | Gymnosporia (Wight & Arn.) Hook.f. | Gymnosporia senegalensis (Lam.)Loes | Details | |
| Caryophyllaceae | Caryophylloideae | Gypsophila L. | Gypsophila coelesyriaca (Boiss. & Hausskn.) F.N.Williams | Details |
| Caryophyllaceae | Caryophylloideae | Gypsophila L. | Gypsophila capillaris (Forssk.)C.Chr., subsp. capillaris | Details |
| Caryophyllaceae | Caryophylloideae | Gypsophila L. | Gypsophila viscosa Murray | Details |
| Caryophyllaceae | Caryophylloideae | Gypsophila L. | Gypsophila capillaris (Forssk.) C.Chr. subsp. confusa Zamarzty | Details |
| Caryophyllaceae | Caryophylloideae | Gypsophila L. | Gypsophila pilosa Hudson | Details |
| Amaranthaceae s.l. | Salicornioideae | Halocnemum M.Bieb. | Halocnemum strobilaceum (Pall.) M. Bieb. | Details |
| Cymodoceaceae | Halodule Endl. | Halodule uninervis (Forssk.)Asch. | Details | |
| Amaranthaceae s.l. | Salicornioideae | Halopeplis Bunge ex Ung.-Sternb. | Halopeplis perfoliata (Forssk.) Bunge ex Ung.-Sternb. | Details |
| Amaranthaceae s.l. | Salicornioideae | Halopeplis Bunge ex Ung.-Sternb. | Halopeplis amplexicaulis (Vahl) Ung.-Sternb. ex Ces., Pass. & Gibelli | Details |
| Hydrocharitaceae | Halophila Thouars | Halophila ovalis (R.Br.)Hook. f. | Details | |
| Hydrocharitaceae | Halophila Thouars | Halophila capricorni Larkum | Details | |
| Hydrocharitaceae | Halophila Thouars | Halophila stipulaceae | Details | |
| Gramineae (Poaceae) | Chloridoideae | Halopyrum | Halopyrum mucronatum (L.) Stapf | Details |
| Amaranthaceae s.l. | Salsoloideae | Haloxylon Bunge ex Fenzl | Haloxylon persicum Bunge | Details |
| Amaranthaceae s.l. | Salicornioideae | Haloxylon Bunge ex Fenzl | Haloxylon scoparium Pomel | Details |
| Amaranthaceae s.l. | Salsoloideae | Haloxylon Bunge ex Fenzl | Haloxylon salicornicum (Moq.) Bunge ex Boiss. | Details |
| Rutaceae | Haplophyllum Juss. | Haplophyllum poorei C.C.Towns. | Details | |
| Rutaceae | Haplophyllum Juss. | Haplophyllum tuberculatum(Forssk.)A.Juss. | Details | |
| Compositae (Asteraceae) | Cichorioideae | Hedypnois Mill. | Hedypnois rhagadioloides (L.) F.W.Schmidt | Details |
| Compositae (Asteraceae) | Asteroideae | Helenium L. | Helenium amarum (Raf.) H.Rock | Details |
| Cistaceae | Helianthemum | sp. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum schweinfurthii Grosser | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum sancti-antonii Schweinf. ex Boiss. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum salicifolium (L.)Mill. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum ledifolium (L.)Mill. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum crassifolium Pers. subsp. sphaerocalyx (Gauba & Janch.)Maire | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum aegyptium (L.)Mill. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum lipii (L.)Dum. Cours. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum ventosum Boiss. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum sessilifolium (Desf.)Pers. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum kahiricum Delile | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum virgatum subsp. ciliatum (Desf.) Murb. | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum vesicarium Boiss. var. vesicarium | Details | |
| Cistaceae | Helianthemum Mill. | Helianthemum stipulatum (Forssk.)C.Chr. | Details |