Upright to spreading perennial rhizomatous herb. Leaflets 7-19, ovate to lanceolate. Flowers blue; spring to summer.
P. viscosum Nutt. from N America is also fairly readily obtained. It is an unpleasant smelling perennial to about 20 cm tall with mostly basal leaves; the leaflets are divided, giving them a verticillate appearance. [P. confertum A. Gray]
Source: (2002). Polemoniaceae. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.
To about 25 cm tall. Flowers blue.
P. 'Firmament' is also sometimes listed.