United States Department of Agriculture
In northeastern Sonora, isolated Sky Island mountain ranges with desertscrub, desert grassland, oak woodland, and pine-oak forest have high biodiversity. El Aribabi Conservation Ranch in the Sierra Azul (from 30°51’13”N, 110°41’9”W to 30°46’38”N, 110°32’3”W) was designated a Private Protected Natural Area by the Comisión Nacional de Áreas Naturales Protegidas in March...
Recent research has shown that exposing seeds to smoke stimulates germination for a multitude of plant species, including several species in the genus Penstemon (Scrophulariaceae). I evaluated whether smoke, either alone or followed by 10 wk of stratification (moist prechilling), influenced germination for 10 Penstemon species native to the Interior West of North...