Macleaya R.Br.

Named by Robert Brown to commemorate Alexander Macleay (1767–1848) Colonial Secretary of New South Wales.

Perennial herbs to about 3 m tall. Sap yellow. Leaves divided into a primary and secondary lobing system with the veins radiating from the base. Flowers small, many in a showy cluster. Petals absent. Fruit a capsule with 1-6 seeds.

Suckers and seed.

Tall plants with yellow sap; leaves with rounded lobing and veins radiating from the base; flowers small and numerous in long, plumed clusters.

2 species from temperate E Asia, China and Japan.

Source: Spencer, R. (1997). Papaveraceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Ranunculanae
order      Ranunculales
family       Papaveraceae
Higher taxa
Subordinate taxa
species         Macleaya cordata (Willd.) R.Br.