''Corallorhiza striata'' is a 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. Along with the Asteraceae, they are one of the two largest families of flowering ...

known by the common names striped coralroot and hooded coralroot. This flowering plant is widespread across much of southern

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

, the northern and western

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

, and

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

. It lives in dry, decaying plant matter on the ground in pine and mixed coniferous forests, and it obtains its nutrients from

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

via mycoheterotrophy.

Description

Like other coralroot orchids, the plant takes its name from its

coral Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...

-shaped

rhizome 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 ...

s. It has an erect stem about tall that may be red, pink, purple, or yellow-green to almost white. The leaves lack

chlorophyll Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words , ("pale green") and , ("leaf"). Chlorophyll allow plants to a ...

and are reduced to colourless scales that sheath the stem. The plant also lacks roots, and relies upon

parasitism Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted structurally to this way of lif ...

of fungi for sustenance. The stem is topped by a

raceme A raceme ( or ) or racemoid is an unbranched, 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 produced as the s ...

of 15 to 25 orchid flowers. Each flower is an open array of

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 The term ''sepalum'' was coined b ...

s and similar-looking petals that may be pink or yellowish and have darker pink or maroon stripes. Inside the flower is a column formed from the fusion of male and female parts, which may be spotted with purple or red. The fruit is a capsule one or two centimeters long.

References

External links

* *
Jepson Manual Treatment
* {{Taxonbar, from=Q5169619 striata Orchids of Canada Orchids of the United States Flora of the Great Lakes region (North America) Flora of the North-Central United States Flora of the Western United States Flora of the Sierra Nevada (United States) Flora without expected TNC conservation status

Description

See also

References

External links