Boechera holboellii

Boechera holboellii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Boechera
Species:
B. holboellii
Binomial name
Boechera holboellii
Synonyms[1]

Boechera holboellii, or Holbøll's rockcress, is a species of plant in the family Brassicaceae. Its cytology has been much studied by the Danish botanist Tyge W. Böcher. Circumscription of this species has varied, with earlier works treating it as a widespread, polymorphic species with several varieties,[2] while more recently it has been treated as a much more narrowly defined species from Greenland.[3]

The rust fungus Puccinia monoica infects the plant leading to pseudoflowers, which mimic those of yellow, early spring wildflowers (e.g. buttercups), not only in visible light but also in ultraviolet.[4]

The specific epithet commemorates Carl Peter Holbøll - a Danish civil servant and early explorer of the fauna of Greenland.

Similar species

The type of B. holboellii is diploid, from Greenland.[3] There is some evidence that it might also be present in eastern Canada.[3] It is not clear whether polyploids of B. holboellii (as narrowly defined) exist. The following diploid species have been distinguished:[3]

  • B. pendulocarpa, in the mountains of western North America
  • B. collinsii, east of the Rocky Mountains
  • B. polyantha, from Idaho, Montana, Oregon, Washington
  • B. retrofracta, widespread from Ontario to Alaska, California, and Montana

References

  1. ^ "The Plant List".
  2. ^ Rollins, R.C., 1993. The Cruciferae of Continental North America. Stanford University Press, Palo Alto, California.
  3. ^ a b c d Windham, M.D. & Al-Shehbaz, I.A. (2006). "New and noteworthy species of Boechera (Brassicaceae) I: sexual diploids". Harvard Papers in Botany. 11 (1): 61–88. doi:10.3100/1043-4534(2007)12[235:NANSOB]2.0.CO;2. S2CID 85903867.
  4. ^ Roy BA: Floral mimicry by a plant pathogen. In: Nature. 362, 1993, S. 56-58 online
  • Flora of the Canadian Arctic Archipelago [1]


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