Trillium pusillum Michaux var. ozarkanum (E.J. Palmer & Steyermark) Steyermark. Subgenus: Delostylis. Common name: Ozark Least Trillium. Phenology: Apr-May. Habitat: Dry to dry-mesic slopes, in NC under Quercus coccinea and Kalmia latifolia. Distribution: Centered in the Ozarks of sw. MO, nw. AR, and e. OK; disjunct eastward at scattered localities in sc. KY, nc. TN, sw. NC, and s. MS.
ID notes: Petals white to pink.
Origin/Endemic status: Endemic
Synonymy ⓘ: = K4, Mo1, NS, Case & Case (1997); = Trillium ozarkanum Palmer & Steyerm. — Ar; < Trillium pusillum Michx. — G, RAB, S, S13, Tn, Patrick (1986), Timmerman-Erskine, Dute, & Boyd (2002); < Trillium pusillum Michx. var. pusillum — F, FNA26, POWO. Basionym: Trillium ozarkanum Palmer & Steyerm. 1935
Links to other floras: < Trillium pusillum var. pusillum - FNA26
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
Heliophily ⓘ: 4
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