[Polemoniums and Jacob's Ladders: The Genus Polemonium in Mt. Adams Country]

Low Jacob's Ladder

Polemonium pulcherrimum ssp. pulcherrimum

Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense

Inflorescence of Low Jacob's Ladder: Polemonium pulcherrimum var. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense)

The photo above shows the inflorescence of low jacob's ladder as seen at about 7200' on the Highline Trail #114. Plants at this location were largely found under small whitebark pine.
Locations on Mt. Adams where this species has been seen:

1. Seen at and above timberline around the entire mountain.

Low Jacob's Ladder: Polemonium pulcherrimum var. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense)

The photo above shows a close-up sideview of the flowers and calyx of showy Jacob's ladder as seen along the road to King's Mt. at ~ 4160' on the southeastern side of Mt. Adams.........May 28, 2005.

Flower of Low Jacob's Ladder: Polemonium pulcherrimum var. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense)

The photo above shows a close-up of the flower of low jacob's ladder as seen at about 7200' on the Highline Trail #114.

Upper leaf surface of Low Jacob's Ladder: Polemonium pulcherrimum var. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense)

The photo above shows a close-up of the dorsal surface of a leaf of low jacob's ladder as seen at about 7200' on the Highline Trail #114. The larger leaflets of this species are up to 10 mm long, while those of P. californicum are 1-3 cm long.

Lower leaf surface of Low Jacob's Ladder: Polemonium pulcherrimum var. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense)

The photo above shows a close-up of the ventral surface of a leaf of low jacob's ladder as seen at about 7200' on the Highline Trail #114.

Inflorescence of Low Jacob's Ladder: Polemonium pulcherrimum var. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense)

The photo above shows a side-view of the inflorescence of low jacob's ladder as seen at about 7200' on the Highline Trail #114. Note the numerous, long and spreading hairs, some of which are tipped with glands..........July 24, 2005.
Paul Slichter