About Euphorbia curtisii Engelm.
Euphorbia curtisii Engelm. is a plant species that closely resembles Euphorbia ipecacuanhae. Its stems grow stiffly upright and are extensively branched. Lower branches are arranged alternately, while upper branches are arranged oppositely. Lower leaves are mostly bract-like and arranged alternately, while upper leaves are opposite, and shaped linear, lanceolate, or oblong. The leaves can be either glabrous or pubescent, and measure 1–6 cm long and 0.5–1.5 mm wide, with petioles 0.5–5 mm long. Peduncles are 0.3–2 cm in length. Cyathia are either glabrous or pubescent, and measure 1.5–3 mm across. The petaloid appendages of the glands are white or pale pink, measuring 0.8–1.3 mm long and 1–1.5 mm wide. Capsules may be sparsely pubescent or glabrous, and are 2.5–3 mm long, with pedicels that extend less than 1 mm beyond the cyathia. The seeds are gray, mottled with reddish-brown, and measure 1.8–2 mm in length. Euphorbia curtisii grows in longleaf pinelands, savannas, and wet pine flatwoods, and also occurs in human-disturbed areas at the edges of flatwoods and along roadsides.
