This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Herbs, with stout rootstocks, yellow sap, pinnatifid leaves and clustered or solitary flowers, the buds nodding. Sepals 2. Petals 4. Stamens ∞. Placentae 2-4; style distinct; stigma 2-4-lobed, radiate. Capsule linear or ovoid, bristly, dehiscent to the base by 2-4 valves. Seeds cancellate, crested. [Name Greek, style-bearing.]
A genus of about 4 species, natives of eastern North America, the Himalayas, Japan and Manchuria, the following typical.
Glaucous, especially the lower surfaces of the leaves, sparingly pubescent, 12'-18' high. Leaves basal and cauline, 4'-10' long, slender-petioled, 1-2-pinnatifid, the divisions obovate, obtuse, lobed or irregularly crenate, those of the stem 2-4, the upper opposite; flowers 2-4, terminal, about 1' broad, deep yellow; sepals hirsute, caducous; petals obovate, rounded; capsule 1' long, ovoid, acute at each end, tipped with the persistent style.
Macleya cordÓta (Willd.) R. Br. (Bocconia cordata Willd.), the Plume-poppy, a tall glaucous perennial, with palmately lobed leaves and large panicles of small greenish-white apetalous flowers, native of eastern Asia, is much planted for ornament, and is spontaneous after cultivation in Pennsylvania and Ohio.