Euphorbia cyathophora Murray
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Erect annual, to 1 m, usually branched, glabrous or nearly so (or the lvs seldom sparsely pilose beneath); lvs mainly or all alternate (or the uppermost opposite), variable, even on the same plant, from linear to broadly oblong or ovate or pandurate, entire or serrate to lobed, the upper mostly lobed and blotched with red or white at base; involucral gland solitary, bilabiate, cupulate, usually wider than high; fr smooth, 6–8 mm thick; seeds tuberculate, 3–3.5 mm, without a caruncle; 2n=28, 56. Moist soil, often in shade; trop. Amer. and s. U.S., cult. and escaped n. to Va., Wis., and Minn. Summer. (E. heterophylla and Poinsettia h., misapplied; Poinsettia c.)
fire on the mountain