''Agnorhiza invenusta'' (

syn. The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnae ...

''Wyethia invenusta'') is a species of flowering plant known by the common names Coville's mule's ears and rayless mule's ears. It is found only in

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, where it grows in 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 plants and animals are a significant ...

as in Fresno, Tulare, and Kern Counties. ''Agnorhiza invenusta'' is a perennial herb growing from a thick taproot and

caudex A caudex (plural: 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 m ...

unit. The hairy, glandular stem grows up to a meter tall. The leaves have triangular or oval blades, up to 15 to 20 centimeters long. The

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 o ...

is made up of one or more flower heads. The head has lance-shaped phyllaries which may be more than 3 centimeters long. The plant usually does not have ray florets, but there may be 2 or 3. 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 ope ...

nearly a centimeter long with no pappus.Jepson Manual Treatment
/ref>

References

External links

United States Department of Agriculture Plants Profile
Heliantheae Flora of California Plants described in 1889 Flora without expected TNC conservation status {{Heliantheae-stub