Penstemon digitalis "finger": the flowers resemble fingers of a glove. The plant grows in moist, sandy soil in full sun in meadows, prairies, fields, wood margins, open woods and along railroad tracks. Its bloom period is from late spring to early summer. The plant is known to attract, butterflies, and birds such as hummingbirds. It tolerates deer browsing. Native states for "P. digitalis" include Iowa, Nebraska, and Missouri although it is less common in Iowan native prairies compared to other "Penstemon" species. The genus "Penstemon" is the largest in North America with 270 species. However, genome size was relatively unknown for the
Recreational drug use part of the milieu of drug taking. The reasons for drug use appear to have as much to do with needs for friendship, pleasure and status as they do with unhappiness or poverty. Becoming a drug taker, to many people, is a positive affirmation rather than a negative experience.” Anthropological research has suggested that humans "may have evolved to counter-exploit plant neurotoxins". The ability to use botanical chemicals to serve the function of endogenous neurotransmitters may have improved survival rates, conferring an evolutionary advantage. A typically restrictive prehistoric diet may have emphasised the apparent benefit of consuming psychoactive drugs, which