Oreocarya sp.

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Oreocarya (perennial cat's-eye) is a genus of flowering plants in the family Boraginaceae. There are about 63 species and its native range extends from western and central Canada, through western United States to north Mexico. It is part of subtribe of Amsinckiinae.

It was once thought to be a either a subgenus or synonym of Cryptantha Lehm. ex G. Don, as they both had plenty of tiny flowers, hairy leaves, and persisting dried flower stems.

Botanist William Alfred Weber later noted that the 2 genera were different in form as Oreocarya was a "biennial or perennial from rosettes of basal leaves; flowers more than 5 mm in diameter, often distinctly long-tubular with prominent yellow eye", while Cryptantha was an "annual without rosettes of basal leaves; flowers minute, less than 5 mm diameter, short-tubed with inconspicuous eye".

Description

They are perennial or biennial, plants. Most species are perennials but a few (such as O. setosissima and O. virgata) are biennial. Species of Oreocarya have a taproot, with branching and a simple or branching caudex, which has a rosette of leaves at the top. From this the flowering stem rises. The herbaceous stem is various among the species, but generally the stems are foliate or bracteate, with branches bearing several helicoid cymes (as flowers). Most species have linear, spatulate (spoon shaped) or oblanceolate shaped leaves, with entire margins and a (leaf) blade that is gradually narrowed to a long, slender petiole. The flower (or inflorescence) is an open, rounded, leafy bracteate thyrsus or a helicoid shaped cyme.

Distribution

It is found in Canada (within the provinces of Alberta, British Columbia and Saskatchewan) in the United States (within the states of Alaska, Arizona, California, Colorado, Idaho, Kansas, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington and Wyoming) and also in northern Mexico. Most species are found in the Colorado Plateau and the Great Basin of the U.S.

Ecology

Most species grow in xerophytic habitats at middle elevations. Only a few species can tolerate growing in the shade of overhanging trees or shrubs. Some species grow in sandy deserts (O. jamesii), on alpine slopes (such as O. weberi, O. crymophile and O. thompsonii), O. virginensis, O. rugulosa and O. semiglabra can tolerate clay soils, but no species grows in moist and undrained soils.

Known species

There are 63 accepted species listed by Kew, and the Biota of North America Program.

• Oreocarya abortiva Greene   Oreocarya aperta Eastw.   Oreocarya atwoodii (L.C.Higgins) Hasenstab & M.G.Simpson   Oreocarya bakeri Greene   Oreocarya barnebyi (I.M.Johnst.) Hasenstab & M.G.Simpson
• Oreocarya breviflora Osterh.   Oreocarya caespitosa A.Nelson   Oreocarya cana A.Nelson   Oreocarya capitata Eastw.   Oreocarya compacta (L.C.Higgins) R.B.Kelley   Oreocarya confertiflora Greene
• Oreocarya crassipes (I.M.Johnst.) Hasenstab & M.G.Simpson   Oreocarya creutzfeldtii (S.L.Welsh) R.B.Kelley
• Oreocarya crymophila (I.M.Johnst.) Jeps. & Hoover   Oreocarya elata Eastw.   Oreocarya flava A.Nelson
• Oreocarya flavoculata A.Nelson   Oreocarya fulvocanescens (S.Watson) Greene   Oreocarya glomerata (A.Gray) Greene   Oreocarya grahamii (I.M.Johnst.) R.B.Kelley   Oreocarya hoffmannii (I.M.Johnst.) Abrams
• Oreocarya humilis (A.Gray) Greene   Oreocarya hypsophila (I.M.Johnst.) Hasenstab & M.G.Simpson
• Oreocarya insolita J.F.Macbr.   Oreocarya interrupta Greene   Oreocarya johnstonii (L.C.Higgins) Hasenstab & M.G.Simpson   Oreocarya jonesiana Payson   Oreocarya leucophaea (Douglas ex Lehm.) Greene
• Oreocarya longiflora A.Nelson   Oreocarya mensana (M.E.Jones) Payson   Oreocarya nubigena Greene
• Oreocarya oblata (M.E.Jones) J.F.Macbr.   Oreocarya ochroleuca (L.C.Higgins) R.B.Kelley
• Oreocarya osterhoutii Payson   Oreocarya palmeri (A.Gray) Greene   Oreocarya paradoxa A.Nelson
• Oreocarya paysonii J.F.Macbr.   Oreocarya propria A.Nelson & J.F.Macbr.   Oreocarya revealii W.A.Weber & R.C.Wittmann   Oreocarya rollinsii (I.M.Johnst.) W.A.Weber   Oreocarya roosiorum (Munz) R.B.Kelley, Hasenstab & M.G.Simpson   Oreocarya rugulosa Payson   Oreocarya salmonensis A.Nelson & J.F.Macbr.
• Oreocarya schoolcraftii (Tiehm) R.B.Kelley   Oreocarya semiglabra (Barneby) Hasenstab & M.G.Simpson
• Oreocarya sericea (A.Gray) Greene   Oreocarya setosissima (A.Gray) Greene   Oreocarya shackletteana (L.C.Higgins) R.B.Kelley   Oreocarya sobolifera (Payson) R.B.Kelley   Oreocarya spiculifera Piper
• Oreocarya stricta Osterh.   Oreocarya subcapitata (Dorn & Lichvar) R.B.Kelley   Oreocarya subretusa (I.M.Johnst.) Abrams   Oreocarya suffruticosa (Torr.) Greene   Oreocarya tenuis Eastw.   Oreocarya thompsonii (I.M.Johnst.) Abrams   Oreocarya thyrsiflora Greene   Oreocarya tumulosa Payson   Oreocarya virgata (Porter) Greene
• Oreocarya virginensis (M.E.Jones) J.F.Macbr.   Oreocarya weberi (I.M.Johnst.) W.A.Weber
• Oreocarya welshii (K.H.Thorne & L.C.Higgins) R.B.Kelley   Oreocarya wetherillii Eastw.

Oreocarya - Wikipedia

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