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From the caliche soils of southeastern Colorado to crevices in bare sandstone on the Colorado Plateau, stemless four-nerved daisies show remarkable variation in growth form

Smooth sumac and fragrant sumac have been shown to be sources of food, medicines, weaving materials and dyesA thicket of smooth sumac retained some of its berries in January, though most of them were gone. Smooth sumac is well known

The Chautauqua Meadow put on a memorable display of wildflowers in late June and early July of this year, so I walked there several times just to enjoy the flowers, as did many others. Lupines were the most prominent and could be seen from Baseline

Is that good or bad? Depends on your perspective, but there is a cost to native plant and animal communities.

A new large-scale study from CU Boulder and colleagues provides first evidence that a gargantuan, inhospitable plateau in Asia maintains the species barriers of some birds

Ranchers graze their sheep on public lands to make money—but at what expense to the land itself?

From birds to chipmunks, wildlife scrambling to harvest seeds.

This year, aspen’s colors did not occur at the same time as in recent decades.

Now we know that natural and industrial emissions from one continent can be seen and felt on distant continents. Distant emissions become local visions and inhalations.

With pendant urns, this perennial lofts its seeds with feathery plumes.