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Hairy puccoon flowers are 3/4" across with a VERY hairy, green calyx with five sharply-triangular teeth , a yellow to yellow-orange tubular corolla with five widely-spreading rounded lobes, five stamens hidden inside the corolla beneath the throat, and a single style with a two-lobed, disc-like stigma. The flowers of hairy puccoon are heterostylous; i.e., either they have long stamens (~14 mm) and a short style (2-5 mm) or short stamens (~3 mm) with a long style (5-12 mm), but neither the anthers nor the stigma extend beyond the throat of the corolla (although they may get close). Hairy puccoon is very similar to hoary puccoon (L. canescens) but with stems that are less hairy and the hairs are "disorganized." The calyx at the base of the floral tube are very hairy in both species, but the teeth of the calyx in L. caroliniense have a distinct keel running down their midline. (I.e., subspecies L. caroliniense croceum.) Flowers of hairy puccoon are larger — up to 1" vs. 1/2" in hoary puccoon. The fruit is an egg-shaped nutlet, white when mature.

Lithospermum

Lithospermum caroliniense

hairy puccoon [Blooms: May-Jun]