Euphorbia hyssopifolia Linnaeus. Subgenus: Chamaesyce. Section: Anisophyllum. Common name: Hyssopleaf Sandmat. Phenology: May-Oct. Habitat: Disturbed ground. Distribution: SC south to s. FL, west to LA; also in w. TX, s. NM, and Mexico, and south to s. South America.
Origin/Endemic status: Native
Taxonomy Comments: Its status in our region has been muddled by confusion with E. nutans. It can be distinguished by its pilose stems and seeds with 2-3 prominent ridges with shallow depressions between (vs. E. nutans with stems distally crispy-pubescent and seeds finely and irregularly wrinkled).
Synonymy ⓘ: = Bah, FNA12, K4, Mex, NY, Tx, Govaerts, Frodin, & Radcliffe-Smith (2000), (basionym); = Chamaesyce hyssopifolia (L.) Small — Fl2, GW2, WH3; = n/a — C, RAB, Tat; > Chamaesyce brasiliensis (Lam.) Small — S13
Links to other floras: = Euphorbia hyssopifolia - FNA12
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FAC
- Eastern Mountains and Piedmont: FAC
- Great Plains: FACU
Heliophily ⓘ: 9
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