A stemless four-nerve daisy growing from a sandstone crevice

Stemless four-nerve daisies have remarkable variation for growth form

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 that I suspect is tied to site-specific adaptation. Read more
Smooth Sumac Berries

Smooth sumac has edible berries and poisonous but medicinal leaves

Smooth sumac and fragrant sumac have been shown to be sources of food, medicines, weaving... Read more
Full rose in bloom at Chataqua meadow

Wild roses are nutritional, medicinal and aesthetic

The Chautauqua Meadow put on a memorable display of wildflowers in late June and early... Read more
Mountain goat in the Rockies.

Introduced mountain goats have colonized much of the land above the trees

Is that good or bad? Depends on your perspective, but there is a cost to native plant and animal communities. Read more
Sheep grazing at Crane Park Pond

Grazing on public lands alters plant communities

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

Helicoptering ponderosa pine seeds attract hungry mouths

From birds to chipmunks, wildlife scrambling to harvest seeds. Read more

Fall colors reveal clones of quaking aspen

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

A volcanic eruption in Russia causes purple sunsets in North America

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. Read more

Unique wildflower resembles Dr. Seuss’ fictional truffula trees

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

Queen Alexandra’s sulphur an ultraviolet marvel

Butterfly species is fascinating when it comes to color variation. Read more

Green gentians live for decades, but only flower once

It appears that, for a plant that will flower only once, having offspring flower over a period of at least 40 years is a way of hedging one’s bets in an unpredictable environment. Read more

Caterpillar a mobile fortress bristling with hypodermic needles

Adult buck moths earned the name by flying during fall deer hunting season. Read more