Caltha

Taxobox
name = "Caltha"

---

image_width = 250px
image_caption = "Caltha palustris"
regnum = Plantae
subregnum = Tracheobionta
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Ranunculales
familia = Ranunculaceae
genus = "Caltha"
genus_authority = L.
subdivision_ranks = Species
subdivsion = See text

"Caltha" is a small genus of ten species of flowering plants in the family Ranunculaceae, native to temperate regions of both the Northern and Southern Hemispheres. Common names include kingcup and marsh marigold. The name "Caltha" derives from the Greek for a cup ("calyx"), describing the open flowers.

They are herbaceous perennial plants growing to 15-80 cm tall, growing in wet boggy ground.

;Species
*"Caltha alba"
*"Caltha appendiculata"
*"Caltha dionaeifolia"
*"Caltha introloba"
*"Caltha leptosepala"
*"Caltha natans"
*"Caltha novae-zelandiae"
*"Caltha obtusa"
*"Caltha palustris"
*"Caltha sagittata"
*"Caltha scaposa"

References

* [http://www.amjbot.org/cgi/content/full/91/2/247 Relationships of Caltha species]
* [http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?1936 Germplasm Resources Information Network: "Caltha"]