Chenopodium atrovirens Skip to content

Chenopodium twisselmannii Benet-Pierce
Madroño 66: 70. 2019.

Etymology	Named for botanist and cattle rancher Ernest Christian Twisselmann (1917-1972)
Description:	Erect large annual, branched from base, ~11 dm high. Leaf blades petiolate, narrowly lance-ovate, mostly un-lobed, ~ 2.5 cm long by ≥ 1 cm wide, base cuneate to obtuse and apex obtuse, entire. Secondary leaf blades narrowly oblong; ~3-2 cm long by ~ .7 cm wide, apex and base obtuse to acute. Inflorescences are terminal and axillary panicles of glomerate spikes, ~60-40 cm, with sessile flowers ~ 1mm. Fruits conical, ≤ 1.2 mm by ~ .7 mm wide, with marked equatorial margin. Pericarp adherent, orange brown to golden yellow, from the center of the abaxial cone to the margin, brown half way as it ages.
Distribution:	California: High meadows in Fresno, Inyo, Inyokern, Kern and Tulare counties.
Synonyms:	Chenopodium hians Standl.
Type:	Howell + True 43934: CAS 637604, PAC 81227
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