R.J. O'Kennon

Botanist.

Abbreviations: O'Kennon
Occupations: botanist, botanical collector, aircraft pilot
Dates: 1942-01-01T00:00:00Z
Direct attributions: 25 plants, 0 fungi
Authorship mentions: 26 plants, 0 fungi
Links:IPNIORCID

25 plants attributed, 1 plant contributed to26 plants:

Crataegus phippsii (Phipps' Hawthorn) O'Kennon 1998
plant species in the rosaceae family
Crataegus phippsii is a species of hawthorn native to south-central British Columbia, Washington state, and Montana. It forms a shrub or small tree to 7 m in height with leaves that have white hair on the underside, and fruit that ripen through red to purplish black. It appears to have potential as an ornamental plant.
Crataegus purpurella (Loch Lomond Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
Crataegus purpurella, also known as the Loch Lomond hawthorn, is a plant in the Crataegus genus. It is endemic to Saskatchewan, Canada, and is unranked by NatureServe.
Crataegus okanaganensis (Okanagan Valley Hawthorn) J.B.Phipps & O'Kennon 1998
plant species in the rosaceae family
Crataegus okanaganensis is a species of hawthorn native to western British Columbia, Washington state and Montana. It forms a vigorous shrub to 8 m in height with brilliant red fruit in late summer, that later ripen to "burgundy to deep purple (occasionally almost black)". It has potential as an ornamental plant.
Liatris glandulosa (Glandular Blazing Star) G.L.Nesom & O'Kennon 2001
plant species in the asteraceae family
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Liatris aestivalis (Summer Gayfeather) G.L.Nesom & O'Kennon 2001
plant species in the asteraceae family
Liatris aestivalis, also known as the summer gayfeather, is a plant species in the family Asteraceae and genus Liatris. The specific epithet, aestivalis, is derived from Latin and means "pertaining to the summer".
Crataegus ursopedensis (Bears Paw Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
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Crataegus shuswapensis (Shuswap Hawthorn) J.B.Phipps & O'Kennon 2002
plant species in the rosaceae family
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Crataegus sheilaphippsiae (Sheila Phipps' Hawthorn) J.B.Phipps & O'Kennon 2004
plant species in the rosaceae family
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Crataegus rubribracteolata (Red Bracteole Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
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Crataegus rivulopugnensis (Battle Creek Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
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Crataegus rivuloadamensis (Adams Creek Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
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Crataegus orbicularis (Orbicular-leaved Hawthorn) J.B.Phipps & O'Kennon 2002
plant species in the rosaceae family
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Crataegus nananixonii (Nixon's Hawthorn) J.B.Phipps & O'Kennon 1997
plant species in the rosaceae family
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Crataegus enderbyensis (Enderby Hawthorn) J.B.Phipps & O'Kennon 2002
plant species in the rosaceae family
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Crataegus cupressocollina (Cypress Hills Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
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Crataegus castlegarensis (Castlegar Hawthorn) J.B.Phipps & O'Kennon 2002
plant species in the rosaceae family
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Crataegus atrovirens (Dark-green Hawthorn) J.B.Phipps & O'Kennon 2002
plant species in the rosaceae family
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Crataegus aquacervensis (Elkwater Hawthorn) J.B.Phipps & O'Kennon 2007
plant species in the rosaceae family
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Packera texensis (Central Texas Groundsel) O'Kennon & Trock 2003
plant species in the asteraceae family
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Mirabilis latifolia (Broad-leaved Four-o'clock) (A.Gray) Diggs, Lipscomb & O'Kennon 1999
perennial plant species in the nyctaginaceae family
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Crataegus okanaganensis var. wellsii (Wells' Hawthorn) J.B.Phipps & O'Kennon 2002
plant variety in the rosaceae family
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Manfreda virginica ssp. lata (Broadleaf False-aloe) (Shinners) O'Kennon, Diggs & Lipscomb 1999
plant subspecies in the asparagaceae family
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Ipomoea edwardsensis (Edwards Plateau Morning-glory) (O'Kennon & G.L.Nesom) O'Kennon 2019
annual plant species in the convolvulaceae family
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Crataegus sheilaphippsiae var. saskatchewanensis (Saskatchewan Hawthorn) J.B.Phipps & O'Kennon 2007
plant variety in the rosaceae family
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Crataegus chrysocarpa var. vernonensis (Vernon Hawthorn) J.B.Phipps & O'Kennon 2004
plant variety in the rosaceae family
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Nabalus carrii (Canyon Rattlesnake Root) (Singhurst, O'Kennon & W.C.Holmes) Weakley 2011
plant species in the asteraceae family
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