Vascular Plants of North Carolina
Account for Narrowleaf Rushfoil - Croton michauxii   G.L. Webster
Members of Euphorbiaceae:
Members of Croton with account distribution info or public map:
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Section 6 » Order Euphorbiales » Family Euphorbiaceae
AuthorG.L. Webster
DistributionCoastal Plain only, known from two sites in Brunswick County: Boiling Springs Lakes, Longleaf Pine savanna at edge of large doline pond, 20 Sept 2006, J.C. Morris 060606-15 (NCU); Boiling Springs Lakes, E side Lee Buck Road Southeast at intersection with railroad, 6 Oct 2020, E. Ungberg s.n. (NCU). RAB (1968) lists the species (as Crotonopsis linearis) only north to SC.

Coastal Plain from southeastern NC to southern FL and eastern TX; inland to southern MO, IL, and reportedly IA.
AbundanceVery rare, only two small populations known. The editors suggest it be listed by the NCNHP as Significantly Rare, if not Watch List.
Habitat"Longleaf Pine savanna at edge of large doline pond" and "disturbed roadside with Quercus elliottii and Solidago tortifolia."
PhenologyFlowers and fruits in Sept-Oct.
IdentificationVery similar to C. willdenowii, including prominent silvery scales. It differs by longer inflorescence (1-4 cm vs. less than 1 cm), narrower leaves (1-3 mm vs. 1.5-4+ mm), and shorter and less conspicuous stellate hairs on leaf uppersides.
Taxonomic CommentsA synonym is Crotonopsis linearis Michaux. Croton linearis Jacquin is a different plant altogether.

Other Common Name(s)Michaux's Croton
State RankS1? [S1]
Global RankG5
State Status[SR]
US Status
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