Polemoniaceae
| Polemoniaceae | |
|---|---|
| |
| Polemonium caeruleum (type species) | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Ericales |
| Family: | Polemoniaceae Juss.[1]
|
| Genera[2] | |
|
27; see text | |
The Polemoniaceae (Jacob's-ladder or phlox family) are a
perennials native to the Northern Hemisphere and South America, with the center of diversity in western North America
.
Only one genus (Polemonium) is found in Europe, and two (Phlox and Polemonium) in Asia, where they are confined to cool temperate to arctic regions; both genera also occur more widely in North America, suggesting relatively recent colonization of the Old World from North America.
The family can be distinguished from most other
corolla
.
For decades, most sources used a classification of the family published by Grant in 1959, but new evidence, including
molecular phylogeny, veins of the corolla, pollen, and the flavonoids present, have led to reclassifications, such as the 1998 classification by Grant.[3] It recognizes two subfamilies. The subfamily Cobaeoideae is tropical/subtropical and composed of six genera organized into five tribes. The subfamily Polemonioideae consists of 13 temperate genera. Grant divides it into three tribes, but with the disclaimer that it is not clear what the correct division is and that the genus classifications may be more useful in this subfamily.[3]
Human uses
A number are widely grown as
.Genera
27 genera are accepted.[2]
- Acanthogilia A.Day & R.C.Moran
- Aliciella Brand
- Allophyllum (Nutt.) A.D.Grant & V.E.Grant
- Bonplandia Cav.
- BryantiellaJ.M.Porter
- Cantua Juss. ex Lam.
- Cobaea Cav.
- Collomia Nutt.
- Dayia J.M.Porter
- Eriastrum Wooton & Standl.
- Gilia Ruiz & Pav.
- Giliastrum (Brand) Rydb.
- Gymnosteris Greene
- Ipomopsis Michx.
- Langloisia Greene
- Lathrocasis L.A.Johnson
- Leptosiphon Benth.
- Linanthus Benth.
- Loeselia L.
- Loeseliastrum (Brand) Timbrook
- Maculigilia V.E.Grant
- Microgilia J.M.Porter & L.A.Johnson
- Microsteris Greene
- Navarretia Ruiz & Pav.
- Phlox L.
- Polemonium L.
- Saltugilia (V.E.Grant) L.A.Johnson
References
- hdl:10654/18083. Retrieved 2013-07-06.
- ^ a b c Polemoniaceae Juss. Plants of the World Online. Retrieved 17 April 2024.
- ^ PMID 21684957
External links
Wikimedia Commons has media related to Polemoniaceae.