Chenopodium sonorense Benet-Pierce & M.G. Simpson
The Journal of the Torrey Botanical Society, 144(3):339-356

Etymology	The epithet "sonorense" is Latin for "from Sonora" as it occurs in the Sonoran desert region of the USA and Mexico
Description:	Plant an erect annual, ~ 3-4 dm high, ill-scented. Stems slender, sparsely branched, branches ascending, weak. Leaves alternate, yellowish-green, farinose; leaf-blades 0.6–1.5 cm long, round-ovate, ovate to lanceolate, elliptic, or triangular, usually with squarish, lateral basal lobes, occasionally sinuate in the often reduced central lobe, apex obtuse or rounded; upper blades smaller, triangular, elliptic, or lanceolate, entire, usually with prominent squarish double basal lobes, these rounded, apex obtuse or acute. Inflorescences in narrow, paniculate spikes. Flowers ~ 1 mm in diameter. Perianth uniseriate; calyx synsepalous, distinct to near base; lobes apically obtuse, farinose abaxially. Stamens five, distinct, whorled, antisepalous, yellowish; filaments terete; anthers laterally dehiscent, dithecal, sub-basifixed. Gynoecium with two stigmas. Fruit, lenticular, ~ 1.1 (1.0–1.2) mm in diameter, seed embryo horizontal, equatorial margin thick in side view; fruit wall adherent, papillate. Papillae large, often not collapsed, radially white or blackish above, occasionally even faintly so and fuzzy dark with minute, elongated papillae usually collapsed, forming alternating brown or whitish lines below. Seed coat black, rugose
Distribution:	USA: AZ Mexico: BC, BS, SO
Synonyms:
Type:	Baker 13866: ASU 247550
Website Info:	We thank all the Herbaria who have very generously have allowed us to display their images. All images with a RED outline were either provided by the linked Herbaria or given us access to their website to obtain such images, or they were scanned while on loan to us. Please see the credits and further information by clicking on the Herbaria acronyms. The specimens’ images without such red outline, were taken by us during our research visits. All fruit and seed images have been taken with the Visionary Digital Microscope System, Dun, Inc. Palmyra, VA by Lee Simpson at San Diego State University. Website development by Lee Simpson. Contact: sdsuherbarium@sdsu.edu