Polemonium foliosissimum
| Polemonium foliosissimum | |
|---|---|
 | |
| In bloom | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Ericales |
| Family: | Polemoniaceae |
| Genus: | Polemonium |
| Species: | P. foliosissimum |
| Binomial name | |
| Polemonium foliosissimum | |
| Synonyms[2] | |
| |
Polemonium foliosissimum, the towering Jacob's-ladder, is a rare species of flowering plant in the phlox family Polemoniaceae, native to the western United States; Arizona, Colorado, New Mexico, and Utah.[2] As its synonym Polemonium archibaldiae it has gained the Royal Horticultural Society's Award of Garden Merit.[3]
Taxonomy
In 1878 a new species in the Polemonium genus was scientifically described by Asa Gray, which he named Polemonium foliosissimum. Together with its genus it is part of the Polemoniaceae family. Although the species has no accepted subspecies or varieties, it has some among its ten botanical synonyms.[2]
| Name | Year | Rank | Notes |
|---|---|---|---|
| Polemonium archibaldiae A.Nelson | 1901 | species | = het. |
| Polemonium filicinum var. archibaldiae (A.Nelson) Brand | 1907 | variety | = het. |
| Polemonium foliosissimum subsp. archibaldiae (A.Nelson) Wherry | 1942 | subspecies | = het. |
| Polemonium foliosissimum var. molle (Greene) Anway | 1968 | variety | = het. |
| Polemonium foliosissimum f. molle (Greene) Wherry | 1942 | form | = het. |
| Polemonium foliosissimum subsp. robustum (Rydb.) Brand | 1907 | subspecies | = het. |
| Polemonium foliosissimum subsp. verum Wherry | 1942 | subspecies | ≡ hom., not validly publ. |
| Polemonium molle Greene | 1905 | species | = het. |
| Polemonium pterospermum A.Nelson & Cockerell | 1903 | species | = het. |
| Polemonium robustum Rydb. | 1904 | species | = het. |
| Notes: ≡ homotypic synonym; = heterotypic synonym | |||
References
- ↑ NatureServe (31 July 2026). "Polemonium foliosissimum". NatureServe Explorer. Arlington, Virginia. Retrieved 11 August 2026.
- 1 2 3 POWO (2026). "Polemonium foliosissimum A.Gray". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 11 August 2026.
- ↑ "Polemonium archibaldiae". The Royal Horticultural Society. 2021. Retrieved 19 May 2021.