Drought-Tolerant Plant List from the 1920s

Bailey Acacia (Acacia baileyana)
Green Wattle (Acacia decurrens)
Black Acacia (Acacia melanoxylon)
Blue-Leaf Wattle (Acacia saligna)
Madrone (Arbutus menziesii)
Coast Beefwood (Casuarina stricta)
Monterey Cypress (Cupressus macrocarpa)
Eucalyptus varieties
Arizona Ash (Fraxinus velutina)
Jacaranda (Jacaranda mimosa)
California Black Walnut (Juglans californica)
Heath Melaleuca (Melaleuca ericifolia)
Canary Island Pine (Pinus canariensis)
California Pepper Tree (Schinus molle)
Pittosporum (Pittosporum crassifolium)
Olive (Olea europea)
Coast Live Oak (Quercus agrifolia)
Wooly Senna (Senna multiglandulosa)
California Bay (Umbellularia californica)

Small Trees/Shrubs:
California Buckeye (Aesculus californica)
Saltbush (Atriplex brewerii)
Butterfly Bush (Buddleja davidii)
Bottlebrush (Callistemon viridiflorus)
Bush Anemone (Carpenteria californica)
California Lilac (Ceonothus varieties)
Cordyline (Dracaena australis)
Pincushion Tree (Hakea laurina)
Christmas Berry (Heteromeles arbutifolia)
California Juniper (Juniperus californica)
Australian Tea Tree (Leptospermum laevigatum)
Japanese Privet (Ligustrum japonicum)
Oleander (Nerium oleander)
Hollyleaf Cherry (Prunus ilicifolia)
Lemonade Berry (Rhus integrifolia)
Laurel Sumac (Rhus laurina)
Fuchsia-Flowering Gooseberry (Ribes speciosum)