Oxytheca parishiivar. cienegensis, Cienega Seca oxytheca. Photo by Steve Matson.
This herbarium specimen shows the annual, taprooted growth habit and diffusely branched inflorescence. The basal leaves wither before the achenes are ripe. Photo by Steve Matson.
The genus name Acanthoscyphus is derived from the Greek words akantha, thorn, + skyphos, cup, referring to the spine-tipped involucres below each cluster of flowers. The alternate genus name Oxytheca comes from the Greek words for sharp (oxys) and sheath (theke).Either way, the message hidden in the scientific name is that this genus is armed! Photo by Steve Matson.
Marina orcuttii var. orcuttii range map.