Asclepias

noun
any plant of the perennial mostly tuberous genus Asclepias; some are grown as garden or greenhouse plants for their showy orange-scarlet or purple flowers: family Asclepiadaceae Sometimes called milkweed
Historical Examples

The soma plant has been thought to be the asclepias acida,11 a plant growing in Persia and called hom in Persian.
The Tribes and Castes of the Central Provinces of India R. V. Russell

Infusum asclepiadis tuberos, L. From the root of butterfly weed or pleurisy root (asclepias tuberosa).
Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley

The bark of the Cassia auriculata, and the milky juice of the asclepias gigantea, are used for tanning in India.
The Commercial Products of the Vegetable Kingdom P. L. Simmonds

asclepias, or Swallow-wort, a genus of plants, the type and the largest genus of the nat.
The New Gresham Encyclopedia. Vol. 1 Part 2 Various

Indigo of an excellent quality has been obtained in the East from a twining plant, Gymnema tingens or asclepias tingens.
The Commercial Products of the Vegetable Kingdom P. L. Simmonds

The genus Gomphocarpus is distinguished from asclepias by the absence of horns or crests in the hoods.
Field Book of Western Wild Flowers Margaret Armstrong

This part had been covered with beautiful flowers, such as sunflowers, red and orange-coloured poppies, and asclepias.
The Desert Home Mayne Reid

I plucked at the water’s edge the asclepias incarnata, with quite handsome flowers, a brighter red than our variety (the pulchra).
The Maine Woods Henry David Thoreau

A mass of waxy pollen or of coherent pollen-grains, as in asclepias and Orchids.
The Manual of the Botany of the Northern United States Asa Gray

asclepias incarnata (swamp milkweed), Umbazookskus River and after; redder than ours, and a different variety from our var.
The Maine Woods Henry David Thoreau