S
- Saccato Gordo - Fiddleneck
- (- 1 -) LCRV-Saguaro - Carnegiea gigantea
- Sacred Datura - Jimson Weed
- Sahuaro - Saguaro
- Salsola - See: Tumbleweed
- Saltbush - Atriplex
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- Desert Saltbush - Atriplex polycarpa
- Four-wing Saltbush - Atriplex canescens
- Saltbush /1 - Atriplex polycarpa
- See: Amaranthaceae
- Salt bush /2 - Desert Holly /#2
- Saltcedar - Tamarix chinensis
See: Tamarix - Salt Grass
- (- 2 -) Salt-grass - Distichlis spp
-
- See: Poaceae
- See: List of Poaceae genera
- (Salvia columbariae) - Chia
See: Lamiaceae, Salvia - (- 3 -) LCRV-Salt Heliotrope - Heliotropium curassivicum
Salt Heliotrope, Quail Plant
Cola de Mico
Chinese parsley
Monkey Tail
See: Heliotropium, Boraginaceae - Saltwort - Tumbleweed
- Sandbar Willow - =Coyote Willow
- Sandbar Willow - Salix exigua
See: Willow - Sand Verbena
- (- 4 -) LCRV-Sand-verbena
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- Abronia (plant)
- Sand-verbena - Abronia villosa
- Sand-verbena, Desert Sand Verbena
Hairy Sand Verbena
Wild lantana
- See: Nyctaginaceae
- Sangre-de-drago (Dragon's Blood) - Limber Bush
- Sauco - Mexican Elder
- (- 5 -) Scale Bud - Anisocoma acaulis
-
- See: Asteraceae, Anisocoma
- See: List of Asteraceae genera
- Schoenoplectus
the Bulrush or Tule - Screwbean Mesquite - Prosopis pubescens
See: Mesquite, Prosopis - (- 6 -) LCRV-Scruffy Prairie Clover - Dalea albiflora
Scruffy Prairie Clover
White Dalea
See: Dalea, Fabaceae/Faboideae - Seepwillow - Baccharis
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- Mule-fat
- Mulefat - Baccharis salicifolia
- Seepwillow - Baccharis salicifolia
- (- 7 -) Senecio - Senecio quercetorum
Senecio
See: Senecio, Asteraceae - Senna - Desert senna
- (Senna covesii) - See: Desert senna
- Shrub Tobacco - See: Nicotiana glauca
- Shrubby Butterweed - Threadleaf Groundsel
- (- 8 -) LCRV-(Kofa Mtns) Shrubby Coldenia - Tiquilia canescens
Shrubby Coldenia, Oreja de perro
See: Tiquilia, Boraginaceae - Single-leaf Pinyon - Pinus monophylla
- Small-flowered Wire-lettuce - Desert Straw
- Small-Leaf Elephant Tree - Elephant Tree
- Small Leaf Mallow - Little Leaf Globemallow
- (- 9 -) LCRV-Smoke-Tree - Dalea spinosa
See Fabaceae/Faboideae - Soaptree yucca - Yucca elata
Soaptree Yucca, Soapweed
Palmilla
Whipple Yucca
Spanish Bayonet
See also: Yucca, Agavaceae - Soapweed - Soaptree yucca
- Sore-eye-poppy - Desert Globemallow
- Sorrel - Canaigre Dock
- Sotol - Common Sotol
- Southwestern Condalia - Gray Thorn
- Spanish Bayonet - Soaptree yucca
- (- 10 -) LCRV-Spanish Needles - Palafoxia arida (Palafoxia linearis)
Spanish Needles
Desert Palafox
See: Palafoxia, Asteraceae - Spider Agave - Agave bracteosa
- Spider Antelope Horns - Antelope Horns
- Spinyleaf Zinnia - Wild Zinnia
- Squaw Weed - Threadleaf Groundsel
- Starflower - Broad Leaved Gilia
- Star-Thistle/#2 - Russian Knapweed
- Star Thistle/#1/Starthistle /#1 - Yellow starthistle/#1
- Starthistle /#1 - Yellow starthistle/#1
- Steve's Dustymaiden - Esteve's Pincushion
- (- 11 -) Stevia - Stevia lemmoni
Sweet Leaf, Sugarleaf
See: Stevia, Asteraceae - Stinkweed - Tree of heaven
- Stoneseed - Fringed Gromwell
- Sugarbush /Sugar Bush - Sugar Sumac
- (- 12 -) LCRV-Sugar Sumac - Rhus ovata
Sugar Sumac
Sugarbush, Sugar Bush
Chaparral Sumac
See: Rhus/(Sumac), Anacardiaceae - Summer Poppy - Arizona Caltrop
- Sweetbush - Chuckwalla's Delight
- Switch-Sorrel - Dodonaea viscosa
- (- 13/14 -) Sycamore - Platanus (6 species)
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- Arizona Sycamore - Platanus wrightii
- Mexican Plane - Platanus mexicana
- See: Platanus
Read more about this topic: List Of Plants By Common Name (Sonoran Desert)