Cymopterus sessiliflorus
(Theobald & Tseng) R.L. Hartm.
Sessile-flower Aletes
Identity
Unique IDELEMENT_GLOBAL.2.1322571
Element CodePDAPI0U1A0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderApiales
FamilyApiaceae
GenusCymopterus
SynonymsAletes sessiliflorusTheobald & Tseng
Concept ReferenceFlora of North America Editorial Committee (FNA). 2024. Flora of North America north of Mexico. Vol. 13. Magnoliophyta: Geraniaceae to Apiaceae. Oxford Univ. Press, New York. xxiv + 566 pp.
Taxonomic CommentsThis record represents the broad concept of Cymopterus sessiliflorus including Aletes macdougalii ssp. breviradiatus following FNA (vol. 13, 2024). In contrast, Kartesz (1994) recognized Cymopterus sessiliflorus and Aletes macdougalii ssp. breviradiatus as distinct.
Conservation Status
Review Date1998-11-16
Change Date1989-11-10
Edition Date1998-11-02
Edition AuthorsFayette, Kim
Rank ReasonsThere are 25 specimens from New Mexico, six from Arizona and one from Colorado (University of Colorado, Rocky Mountain, Arizona State University, University of Arizona, University of New Mexico, Brigham Young University Herbaria).
Range Extent CommentsThis species is known from Eocene clays in southern La Plata County, Colorado (Weber and Wittmann 1996). It is widely scattered throughout northwestern New Mexico (San Juan, Rio Arriba, and Sandoval counties) (Ecosphere Environmental Services 1995). A. sessiliflorus is also found in Apache County, Arizona (University of Colorado, Rocky Mountain, Arizona State University, University of Arizona Herbaria), but distribution data from Kartesz (1999 Floristic Synthesis) does not include Arizona in the distribution of A. sessiliflorus.
Known from New Mexico, Arizona,and Colorado (La Plata County).
Occurrences CommentsIt is reported from La Plata County, Colorado (Weber and Wittmann 1996). There are five occurrences documented at the NMNHP (1998), these have not been visited since 1984. There are 25 specimens from New Mexico, six from Arizona and one from Colorado (University of Colorado, Rocky Mountain, Arizona State University, University of Arizona, University of New Mexico, Brigham Young University Herbaria).
Ecology & Habitat
Habitat
A. sessiliflorus occupies rocky ledges and crevices of the San Jose Formation in pinyon-juniper woodlands at 1820-2270 meters (Ecosphere Environmental Services 1995). In Colorado this species is found on Eocene clays (Weber and Wittmann 1996).
Other Nations (1)
United StatesN3
| Province | Rank | Native |
|---|
| Wyoming | S1 | Yes |
| Colorado | S1 | Yes |
| Navajo Nation | S2 | Yes |
| Arizona | S1 | Yes |
| New Mexico | SNR | Yes |
| Utah | SNR | Yes |
References (8)
- Colorado Natural Heritage Program. 1998. Biological Conservation Datasystem. Colorado State University, Ft. Collins, CO.
- Ecosphere Environmental Services, Inc. 1995. The Farmington district Endangered, Threatened and Sensitive Plant Field Guide.
- Flora of North America Editorial Committee (FNA). 2024. Flora of North America north of Mexico. Vol. 13. Magnoliophyta: Geraniaceae to Apiaceae. Oxford Univ. Press, New York. xxiv + 566 pp.
- Hartman, R.L. 2006. New combinations in the genus <i>Cymopterus </i>(Apiaceae) of the southwestern United States. Sida 22(2): 955-957.
- Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
- New Mexico Natural Heritage Program. 1998. Biological Conservation Datasystem. Albequerque, NM.
- Theobald, W. L., C. S. Tseng, and M. E. Mathias. 1964. A revision of <i>Aletes </i>and <i>Neoparrya </i>(Umbelliferae). Brittonia 16:296-315.
- Weber, W.A., and R.C. Wittmann. 1996a. Colorado flora: Eastern slope. Revised edition. Univ. Press of Colorado, Niwot, Colorado. 524 pp.