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Cymopterus hendersonii

(Coult. & Rose) Cronq.

Spring-parsley

GNRUnranked Found in 24 roadless areas NatureServe Explorer →
GNRUnrankedGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.728507
Element CodePDAPI0U180
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderApiales
FamilyApiaceae
GenusCymopterus
Synonyms
Pseudocymopterus hendersoniiCoult. & Rose
Concept Reference
Coulter, J. M. and J. N. Rose. 1900. Monograph of the North American Umbelliferae. Contr. U. S. Nat. Herb. 7:1-256.
Taxonomic Comments
This record represents the narrow concept of Cymopterus hendersonii, not including C. longilobus, following FNA (vol. 13, 2024). Kartesz (1994, 1999). In contrast, Kartesz (1994, 1999) lumped Cymopterus hendersonii and Cymopterus longilobus into Pteryxia hendersonii. Cymopterus hendersonii in this narrow sense is a rare regional endemic of southwest and east-central Idaho and Madison and Ravalli counties, Montana. Cymopterus hendersonii was orignially described by Coulter and Rose (1900) from a 1895 collection from east-central Idaho. Subsequent treatments of the genus have placed similar plants from south-central Montana to Utah and Colorado into C. hendersonii; however, Ronald Hartman (curator, Rocky Mountain Herbarium) has determined that these plants are different from C. hendersonii and should rightly be called C. longilobus.
Ecology & Habitat

Description

Hendersons waferparsnip is a low, mat-forming perennial herb with a branched root crown covered in old leaf petioles. The petiolate leaves are all basal, 2-9 cm long and twice divided into well-separated, narrow segments. Herbage is glabrous or slightly roughened. The naked stems are 1-8 cm high, lax or erect. Small yellow flowers are born in a compound umbel subtended by 0-7 linear bracts. Each ultimate umbel is subtended by 3-7 narrow bracts, longer than the flowers. Fruits are elliptic, 2.5-5 mm long with 8 thickened, longitudinal wings protruding up to 1 mm above the surface.
Other Nations (1)
United StatesNNR
ProvinceRankNative
IdahoSNRYes
MontanaS2Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (24)
Montana (8)
AreaForestAcres
BeartoothGallatin National Forest5,285
Big Horn MountainBeaverhead-Deerlodge National Forest50,846
Line Creek PlateauCuster National Forest24,825
Mt. Gmt Area HCuster National Forest1,335
Proposed Line Creek PrnaCuster National Forest389
Red Lodge Creek HellroaringCuster National Forest17,210
Republic MountainGallatin National Forest836
VigilanteBeaverhead-Deerlodge National Forest15,893
Nevada (2)
AreaForestAcres
Ruby - MarshHumboldt-Toiyabe National Forest10,164
Ruby - SegundaHumboldt-Toiyabe National Forest12,532
New Mexico (1)
AreaForestAcres
Latir PeakCarson National Forest3,573
Utah (6)
AreaForestAcres
418028Uinta National Forest34,002
418029Uinta National Forest15,673
Bullion - DelanoFishlake National Forest14,917
Horse Mountain - Mans PeakManti-Lasal National Forest22,159
Mt. NaomiWasatch-Cache National Forest41,922
Tushar MountainFishlake National Forest39,992
Wyoming (7)
AreaForestAcres
Beartooth Proposed WildernessShoshone National Forest16,837
Phillips RidgeBridger-Teton National Forest10,108
South Beartooth HighwayShoshone National Forest105,570
Spread Creek - Gros Ventre RiverBridger-Teton National Forest166,097
Sulphur CreekShoshone National Forest30,221
West Slope TetonsTarghee National Forest47,448
Windy MountainShoshone National Forest31,283
References (5)
  1. Coulter, J. M. and J. N. Rose. 1900. Monograph of the North American Umbelliferae. Contr. U. S. Nat. Herb. 7:1-256.
  2. 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.
  3. Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
  4. NatureServe. Unpublished. Concept reference for taxa where a reference cannot be recorded due to insufficient BCD data for conversion; to be used as a placeholder until the correct citation is identified.
  5. NatureServe. Unpublished. Concept reference for taxa which have not yet been described; to be used as a placeholder until a citation is available which describes the circumscription of the taxon.