Euphorbia hyssopifolia

Hyssopleaf sandmat
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malpighiales
Family:	Euphorbiaceae
Genus:	Euphorbia
Species:	E. hyssopifolia
Binomial name
	Euphorbia hyssopifolia; L. (1759)
Synonyms
	Anisophyllum hyssopifolium(L.) Haw. (1812) ; Chamaesyce hyssopifolia(L.) Small (1905) ; Chamaesyce brasiliensis(Lam.) Small (1903) ; Chamaesyce jenningsiiMillsp. ex Britton (1916) ; Chamaesyce jonesii(Millsp.) Millsp. (1916) ; Chamaesyce nirurioidesMillsp. (1914) ; Euphorbia blanchetiiMiq. ex Boiss. (1850) ; Euphorbia brasiliensisLam. (1788) ; Euphorbia brasiliensis var. hyssopifolia(L.) Boiss. (1862) ; Euphorbia domingensisSpreng. ex Boiss. (1862) ; Euphorbia hypericifolia var. falciformisKlotzsch (1843) ; Euphorbia jonesiiMillsp. (1890) ; Euphorbia klotzschianaMiq. (1851) ; Euphorbia nirurioides(Millsp.) (1920) ; Euphorbia pulchellaKunth (1817) ; Euphorbia serrulataVell. (1829) ; Euphorbia stenomeresS.F.Blake (1922) ;

Last updated October 10, 2025

Euphorbia hyssopifolia, known by the common name of hyssopleaf sandmat in English and hierba de pollo ("chicken grass") in Spanish, is a member of the spurge family, Euphorbiaceae. It is an annual herb, native to Central and South America and the Southeastern United States.^[2] It has also been introduced to west Tropical Africa, India, and Australia.^[1]

Description

Arching annual to 80 cm with leaf-bases oblique. Flowers and fruits in small loose clusters. Because it is rather confusable with the usually slightly hairier E. nutans, fruit capsules should always be opened for seeds. The seeds are cross-ridged and rather square-edged in comparison to the more irregular rounder-edged seeds of E. nutans.

Seeds: "brown to grayish white, ovoid, slightly 4-angled in cross section, abaxial faces convex, adaxial faces slightly concave to slightly convex, 1–1.4 × 0.7–1.1 mm, with 2–3 prominent transverse ridges that do not interrupt adaxial keel, or coarsely and inconspicuously pitted-reticulate." FNA (see also FNA nutans)

References

1 2 3 "Euphorbia hyssopifolia L.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 4 December 2022
↑ "Euphorbia hyssopifolia". Global Biodiversity Information Facility . Retrieved 4 December 2022.

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[POWO_101676-2-1] 1 2 3 "Euphorbia hyssopifolia L.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 4 December 2022

[2] "Euphorbia hyssopifolia". Global Biodiversity Information Facility . Retrieved 4 December 2022.

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