Participant Info

Species

Polemonium occidentale [Polemonium caeruleum subsp. occidentale]

Family

Polemoniaceae

CommonName

western Jacob’s ladder

Presence

YES

Status

native

EarliestDate

1891

LatestDate

2022

Ecosystem

montane, subalpine, ruderal

Geobotanical

SSanjuans, Culebras

Counties

Conejos, Costilla, Hinsdale, Mineral, Rio Grande, Saguache

Passes

Los Pinos

WildlifePreserves

Big Meadows Reservoir

Other Localities

PhotoRecords

YES Rich Haswell: Rio Grande Co, to of Million Reservoir 11 Aug 2022

Comments

Western Jacob's-ladder is a fairly common Watershed species, growing in the montane and in more mesic conditions than does Polemonium foliosissimum: lake shores, edges of beaver ponds, marshes, sometimes wet ditches by roads. There are no records of Polemonium occidentale from the north Cristos and only one from the Culebras, near Leandro Lake and the New Mexico border (Costilla Co, 1986). The continuation of the flower into Rio Arriba and Taos counties of New Mexico marks the SE corner of this western USA plant.

Annotation