''Vancouveria chrysantha'' is a species of flowering plant in the barberry family known by the common names golden inside-out flower and Siskiyou inside-out flower.Flora of North America: ''Vancouveria chrysantha''
/ref>

Description

''Vancouveria chrysantha'' is a

rhizomatous In botany and dendrology, a rhizome ( ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...

perennial herb with a short, mostly underground stem. It produces a patch of basal leaves which are each made up of round, shallowly lobed leaflets borne on long, reddish petioles. The

inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...

appears in the spring to early summer. It is a

raceme A raceme () or racemoid is an unbranched, indeterminate growth, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are ...

of flowers on a long, erect peduncle with hairy, glandular branches. Each drooping flower has six inner

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 Etymology The term ''sepalum'' ...

s which look like petals. They are bright yellow, up to a centimeter long, and reflexed back, or upwards, away from the flower center. Lying against the sepals are the smaller true petals, which are also bright yellow, curled, and hood-like. There are six

stamen The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament ...

s and a large glandular

ovary The ovary () is a gonad in the female reproductive system that produces ova; when released, an ovum travels through the fallopian tube/ oviduct into the uterus. There is an ovary on the left and the right side of the body. The ovaries are end ...

Distribution

The plant is native to northwestern

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

and southwestern

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

. It occurs in the

Klamath Mountains The Klamath Mountains are a rugged and lightly populated mountain range in northwestern California and southwestern Oregon in the western United States. As a mountain system within both the greater Pacific Coast Ranges and the California Coast R ...

below . It grows in dry mountain habitat in

chaparral Chaparral ( ) is a shrubland plant plant community, community found primarily in California, southern Oregon, and northern Baja California. It is shaped by a Mediterranean climate (mild wet winters and hot dry summers) and infrequent, high-intens ...

and forests, often on

serpentine soil Serpentine soil is an uncommon soil type produced by weathered ultramafic rock such as peridotite and its metamorphic derivatives such as serpentinite. More precisely, serpentine soil contains minerals of the serpentine subgroup, especially an ...

References

External links

*
Jepson Manual eFlora (TJM2) treatment of ''Vancouveria chrysantha'' (Siskiyou inside-out flower)U.C. CalPhotos gallery: ''Vancouveria chrysantha''
chrysantha Flora of California Flora of Oregon Flora of the Klamath Mountains Natural history of the California chaparral and woodlands Flora without expected TNC conservation status {{Berberidaceae-stub