Field Notes from the Yuma Chapter 2019-2020 Season Arizona Native Plant Society “Plant Families from Asteraceae to Zygophyllaceae”
Posted Mar 27, 2020
Members of the Yuma Chapter are devoting meeting time to the study of plant families represented in the Sonoran Desert flora of our area. Asteraceae, the first family we studied, was presented remotely in December via YouTube by chapter president Valerie Morrill. In February, Erv Barnes followed with a discussion on the puzzling Zygophyllaceae. Later that month a group trekked to the Imperial Sand Dunes in California to find examples of both plant families, spring wildflowers, and to inspect an unusual growth form of creosote bush, Larrea tridentata. We stopped at two places off I-8. The first stop south of Sidewinder Road exit and the second was at the historical Old Plank Road ACEC on BLM west of the Grays Well exit.
Following is a plant list and photographs recorded by member Linda Johnson.
Desert willow Chilopsis linearis
Creosote bush Larrea tridentata
Emory Indigo bush Psorothamnus emoryii
Giant Dune Buckwheat Eriogonum deserticola
Joint Fur, Mormon Tea Ephedra (probably trifurca)
Russian thistle Salsola sp.
Annuals and low-growing perennials
Ajo lily Hesperocallis undulata
Bugseed Dicoria canescens
Crinklemat Tiquilia plicata
Cryptantha Cryptantha sp.
Dune primrose Oenothera deltoides ssp. deltoides
Locoweed/milkvetch Astragalus sp.
Sand verbena Abronia villosa
Spanish needles Palofoxia arida
Spectacle pod Dimorphicarpa pinnatifida
Suncup Camissonia sp.