Barbara Jean Ertter

Neviusia cliftonii is a rare species of shrub in the rose family which is known by the common name Shasta snow-wreath. It is endemic to Shasta County, California, where it is known from about 25 occurrences in the mountains around Lake Shasta. The shrub was not known to science until 1992, when it was discovered east of Redding, California and described as a new species in Neviusia, previously a monotypic genus.

Potentilla morefieldii is a species of cinquefoil known by the common name Morefield's cinquefoil. It is endemic to eastern California, where it is known from just a few occurrences in the White Mountains. It grows in rocky habitat such as talus in alpine climates. This cinquefoil was considered part of the Potentilla drummondii complex until 1992, when it was separated and elevated to species status. This is a small tufted plant with hairy or woolly foliage. The leaves are each made up of several overlapping pairs of lobed leaflets which are green and rough-haired on the upper surfaces and

Potentilla rimicola is a species of cinquefoil-Potentilla, known by the common name cliff cinquefoil. It is native to the San Jacinto Mountains in Riverside County of the Peninsular Ranges in Southern California where it is known from just a few occurrences, and to Baja California. As its name suggests, it has been observed growing on cliff faces, its taproot anchoring in cracks in granite rock and its foliage hanging.

Paronychia ahartii is a species of flowering plant in the family Caryophyllaceae known by the common name Ahart's nailwort. It is endemic to California, where it is known from three counties at the northern edge of the Sacramento Valley where it rises into the southern slopes of the Cascade Range. It is a plant of moist, rocky habitat, such as vernal pools. This is a petite plant producing a nearly invisible stem from a threadlike taproot. The plant is only about a centimeter wide and somewhat spherical in shape. It is a tiny patch of bristle-tipped green leaves a few millimeters in length

Monardella beneolens is a rare species of flowering plant in the mint family known by the common name sweet-smelling monardella.

Juncus luciensis is a species of rush known by the common name Santa Lucia dwarf rush. It is endemic to California, where it is uncommon. This species is an annual herb growing just a few centimeters tall. It is yellowish green in color. The leaves are up to 1.5 centimeters long. The inflorescence contains one or two flowers with yellow-green tepals. The fruit is a greenish or sometimes red-tinged capsule containing seeds which are no more than 0.4 millimeters long. This plant can be found only in California, where it occurs in the Peninsular Ranges and the Transverse Ranges, as well as the

Artemisia packardiae, also known as Succor Creek mugwort or Packard's wormwood, is a species of North American shrubs in the sunflower family. It grows in the Great Basin region of the western United States, in the States of Nevada, Idaho, and Oregon.

Potentilla basaltica is a species of flowering plant in the rose family known by the common names Soldier Meadows cinquefoil and basalt cinquefoil. It is endemic to a small area of the Modoc Plateau and Warner Mountains in northeastern California and northwestern Nevada.

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Juncus tiehmii is a species of rush known by the common name Nevada rush. It is native to the western United States, where it grows in wet habitat with granite sand substrate, including riverbanks and barren seeps. This is a small annual herb forming dense clumps of hair-thin stems no more than about 6 centimeters high. The inflorescence is made up of one to seven tiny flowers atop each stem. The flowers have a few greenish to pink or red segments no more than about 3 millimeters long.

Potentilla rhypara, also known as grimy mousetail and grimy ivesia, is a species of flowering plant in the rose family. It is native to Oregon and Nevada in the United States.

Goodmania is a genus of plants in the family Polygonaceae containing the single species Goodmania luteola. Its common name is yellow spinecape. It is a tiny annual herb forming small patches on the ground no more than a few centimeters high and wide. It has fuzzy club-shaped leaves and bears bright yellow flowers. The plant is native to California and Nevada.

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Potentilla yadonii, commonly known as Santa Lucia horkelia, is a rare species of flowering plant in the rose family. It is endemic to California, where it is known from the Central Coast Ranges from Monterey to Santa Barbara Counties. It occupies chaparral and woodland habitat, often in meadows and dry riverbeds. Easily confused with related species, this plant was not recognized as a species of its own until 1993.

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