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Life form2, 3: forb, annual
Habitat: near water
leaf presence3: leaves usually present
leaf arrangement3: apparently whorled
leaf format3: simple
leaf shape3: linear or lanceolate or oblanceolate
leaf surface3: rough
Flower color2: white or whitish
Flowering period2: spring
Armament2, 3: spineless
Family1, 2, 3: Rubiaceae (madder family)
Status: introduced,uncommon
Locations where collected or observed:
Organ Pipe Cactus National Monument
Barry M. Goldwater Range
Sonoran Desert National Monument
*For information on nomenclature, authorship, or plant characteristics, see these references:
- 1 Felger, Richard Stephen, Susan Rutman, Thomas Van Devender, and Steven M. Buckley. 2012. Checklist of Vascular Plants of Organ Pipe Cactus National Monument, Cabeza Prieta National Wildlife Refuge, and Tinaja Altas, Arizona. CANOTIA 8:1-53
- 2 Felger, Richard Stephen, Susan Rutman, Michael F. Wilson, and Kathryn Mauz. 2007. Botanical Diversity of Southwestern Arizona and Northwestern Sonora. in: Dry Borders, Great Natural Reserves of the Sonoran Desert. eds.: Richard Stephen Felger and Bill Broyles. The University of Utah Press, Salt Lake City
- 3 Felger, Richard Stephen. 2000. Flora of the Gran Desierto and Rio Colorado of Northwestern Mexico. The University of Arizona Press, Tucson
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