Lindsay again wrote today's entry:
Lupinus pilosus, commonly known as the blue lupine, is an Old World lupine, occurring from southern Greece through western Turkey to Israel. Its distribution broadly overlaps a second Old World lupine species, Lupinus palaestinus, but the two are never found in the same plant communities (allopatric). Both are species of edaphic environments, but Lupinus palaestinus is generally confined to the light soils of coastal Israel.
The two species are of taxonomic interest. Despite being similar morphologically and having an equal number of chromosomes, they have not produced any viable intermediate hybrids in nature. Research has indicated that the two species differ in pollination apparatuses, genic imbalances and partial reproductive barriers.