''Platanthera michaelii'' is an uncommon species of

orchid Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Orchids are cosmopolitan plants that are found in almost every habitat on Eart ...

known by the common names Michael's rein orchid and Michael's piperia. It is

endemic Endemism is the state of a species being found only 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 foun ...

to California, where it is known from the coastal plains, hills, and mountains, and the

Sierra Nevada foothills :''See Sierra Nevada for general information about the mountain range in the United States.'' The ecology of the Sierra Nevada, located in the U.S. states of California and Nevada, is diverse and complex. The combination of climate, topography, ...

. It can be found in varied habitats, including scrub, woodland, and forest. This orchid grows erect to about 70 centimeters in maximum height from a bulbous

caudex A caudex (: caudices) of a plant is a stem, but the term is also used to mean a rootstock and particularly a basal stem structure from which new growth arises.pages 456 and 695 In the strict sense of the term, meaning a stem, "caudex" is most ...

. The basal leaves are up to 24 centimeters long by 5 wide. Leaves higher on the stem are much reduced. The upper part of the stem is a spikelike

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 ...

of many yellow-green flowers which are fragrant in the evenings.

References

External links

Jepson Manual Treatment

USDA Plants Profile

Flora of North America

''Piperia michaelii'' — U.C.Photo gallery
michaelii Endemic flora of California Orchids of California Flora of the Sierra Nevada (United States) Natural history of the California chaparral and woodlands Natural history of the Channel Islands of California Natural history of the San Francisco Bay Area Natural history of the Santa Monica Mountains Natural history of the Transverse Ranges Endemic orchids of the United States Flora without expected TNC conservation status {{Orchidoideae-stub