Debra K. Trock

Packera werneriifolia, known by the common names alpine rock butterweed and hoary groundsel, is a species of flowering plant in the aster family. It is native to the western United States in the Sierra Nevada mountain habitat in subalpine and alpine climates, including forests and barren talus.

Packera subnuda is a species of flowering plant in the aster family known by the common names Buek's groundsel and cleftleaf groundsel. It is native to western North America from the Northwest Territories to northern California to Wyoming, where it grows in high mountain meadows in subalpine and alpine climates. It is a perennial herb producing one upright stem or a small cluster of two or three stems from a rhizome and/or fibrous root system. The stems grow approximately 5 to 30 centimeters (2.0 to 11.8 in) tall. The basal leaves have fleshy oval blades up to 3 or 4 centimeters (1.2 or 1.6

Packera musiniensis is a rare species of flowering plant in the aster family known by the common names Musinea ragwort and Musinea groundsel. It is endemic to Utah in the United States, where it is known only from Sanpete County in the Manti-La Sal National Forest. Packera musiniensis is a small perennial herb has a woolly-haired white stem 5–10 cm tall. Leaves are basal, lance-shaped basal leaves 2–3 cm long, with ruffled or nearly lobed edges. The inflorescence contains 3 to 15 flower heads on woolly peduncles. Each head is lined with yellow-green to purple phyllaries nearly a centimeter in

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