Nicotiana attenuata Torr. ex S.Watson - Solanaceae - coyote tobacco, Kojotentabak
Annual herb up to 150cm tall, native to western North America from from British Columbia to northern Mexico. Plant glandular-hairy, sometimes glabrous; basal leaves elliptic to ovate, proximal clanceolate, distal narrower, reduced; flower: calyx 6-10mm, densely glandular, corolla tube 20-35mm long, pinkish-white, lobes five, white.
https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=34644
Main compounds of the floral headspace were benzylacetone (49.1%), benzyl alcohol (6.3%), benzaldehyde (6.1%), hexyl acetate (3.5%), caryophyllene (2.1%), limonene (1.4%), and cis-3-hexenol (1.0%). Minor components were e.g. geraniol (0.7%), cis-α-bergamotene (0.7%), cis-3-hexenyl butyrate (0.7%), 2-phenylethanol (0.6%), nicotine (0.4%), methyl benzoate (0.15%), and methyl salicylate (0.05%).
Main volatile components of the nectar were nicotine (23.3%) and benzylacetone (15.8%).
[Kessler, Danny, and Ian T. Baldwin. „Making sense of nectar scents: the effects of nectar secondary metabolites on floral visitors of Nicotiana attenuata.“ The Plant Journal 49.5 (2007): 840-854]
„Nicotiana attenuata, a night-flowering tobacco that germinates after fires in the Southwestern United States, normally produces flowers that open at night and release benzyl acetone (BA) to attract night-active hawkmoth pollinators (Manduca quinquemaculata and M. sexta), which are both herbivores and pollinators. When plants are attacked by hawkmoth larvae, the plants produce flowers with reduced BA emissions that open in the morning and are preferentially pollinated by day-active hummingbirds.“
[Kessler, Danny, Celia Diezel, and Ian T. Baldwin. „Changing pollinators as a means of escaping herbivores.“ Current Biology 20.3 (2010): 237-242] PDF
Nicotiana attenuata Plant, author: Max Lichter Yavapai County Native & Naturalized Plants CC BY-SA 1.0