''Artemisia rothrockii'' is a North American species of

sagebrush Sagebrush is the common name of several woody and herbaceous species of plants in the genus '' Artemisia''. The best known sagebrush is the shrub '' Artemisia tridentata''. Sagebrushes are native to the North American west. Following is an al ...

known by the common names timberline sagebrush and Rothrock's sagebrush.''Artemisia rothrockii''.
NatureServe. 2012. ''Artemisia rothrockii'' is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...

, where it is native to parts of the

Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primari ...

, the White Mountains, and the

San Bernardino Mountains The San Bernardino Mountains are a high and rugged mountain range in Southern California in the United States. Situated north and northeast of San Bernardino and spanning two California counties, the range tops out at at San Gorgonio Mountain ...

. It has been recorded from the

Kern Plateau The Golden Trout Wilderness is a federally designated wilderness area in the Sierra Nevada, in Tulare County and Inyo County, California. It is located east of Porterville within Inyo National Forest and Sequoia National Forest. It is in s ...

Mount Dana Mount Dana is a mountain in the U.S. state of California. Its summit marks the eastern boundary of Yosemite National Park and the western boundary of the Ansel Adams Wilderness. At an elevation of , it is the second highest mountain in Yosemite ...

, Angora Peak, and the vicinity of

Fallen Leaf Lake Fallen Leaf Lake is a mountain lake located in El Dorado County, California, near the California–Nevada state border, about one mile south west of the much larger Lake Tahoe. It is approximately aligned north-to-south and oval in shape, measur ...

. It grows in the dry transition between mountain meadows and forests. It can also tolerate wet conditions, surviving waterlogging during

snowmelt In hydrology, snowmelt is surface runoff produced from melting snow. It can also be used to describe the period or season during which such runoff is produced. Water produced by snowmelt is an important part of the annual water cycle in many part ...

. ''Artemisia rothrockii'' grows at elevations between 2000 and 3500 meters. This mountain shrub grows to heights of 20 to 50 centimeters, producing many upright stems from a narrow trunk. The evergreen foliage is dark green, glandular, sticky, and very aromatic. New twigs and leaves are somewhat woolly, but older parts are hairless. The narrow

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed ...

holds clusters of

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

lined with rough, shiny, slightly hairy

phyllaries In botanical terminology, a phyllary, also known an involucral bract or tegule, is a single bract of the involucre of a composite flower. The involucre is the grouping of bracts together. Phyllaries are reduced leaf-like structures that form one ...

and containing yellowish

disc floret The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae we ...

s. The fruit is an

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not op ...

up to 2 millimeters long, sometimes with a pappus.''Artemisia rothrockii''.
The Jepson Manual eFlora, 2012. The species is named for American forester

Joseph Trimbel Rothrock Joseph Trimble Rothrock (April 9, 1839 – June 2, 1922) was an American environmentalist, recognized as the "Father of Forestry" in Pennsylvania. In 1895, Rothrock was appointed the first forestry commissioner to lead the newly formed Division o ...

, 1839 – 1922.Gray, Asa. 1876. Proceedings of the American Academy of Arts and Sciences 19: 50, in footnote
/ref>

References

External links

Calflora Database: ''Artemisia rothrockii'' (Rothrock sagebrush)
* rothrockii Endemic flora of California Flora of the Sierra Nevada (United States) Natural history of the Transverse Ranges San Bernardino Mountains Plants described in 1876 {{asteroideae-stub