Croton punctatus |
Croton argyranthemus |
|
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beach tea, gulf croton, hierba de jabalí |
healing croton, silver croton, silverleaf croton |
|
Habit | Shrubs, 3–10 dm, monoecious or sometimes appearing dioecious. | Herbs or subshrubs, annual or short-lived perennial, 1–6 dm, monoecious. |
Stems | trichotomously branching, stellate-hairy to stellate-lepidote. |
several from base, branching distally into 2–4 branches, lepidote. |
Leaves | not clustered; stipules absent; petiole 1–4 cm, 1/2 to equal blade length, glands absent at apex; blade broadly elliptic to suborbiculate, 2–5 × 1.5–4 cm, much less than 2 times as long as wide, base rounded to truncate, margins entire, apex obtuse to rounded, abaxial surface pale grayish green, stellate-lepidote, adaxial surface slightly darker green, stellate-lepidote. |
not clustered; stipules subulate, 0.2 mm; petiole 0.2–1(–2) cm, glands absent at apex; blade on proximal parts of stems oval to narrowly obovate, on distal parts oblong to lanceolate-oblong or broadly elliptic, 1–5 × 0.5–2(–3) cm, base rounded to narrowed, margins entire, apex obtuse to rounded, abaxial surface silvery, densely lepidote, adaxial surface darker green, sparsely lepidote or glabrate. |
Inflorescences | unisexual or bisexual, racemes, 1–4 cm, staminate flowers 3–7, pistillate flowers 1–3. |
bisexual, racemes, 2–5 cm, staminate flowers 15–35, pistillate flowers 2–8. |
Pedicels | staminate 2–4 mm, pistillate 0–1 mm. |
staminate 1–5 mm, pistillate 0–2 mm. |
Staminate flowers | sepals 5–6, 2.5 mm, abaxial surface stellate-lepidote; petals 0; stamens 10–13. |
sepals 5, 5 mm, abaxial surface lepidote; petals 5, oblong-spatulate, 5 mm, abaxial surface densely lepidote, scales translucent, petals appearing hyaline; stamens 10–15. |
Pistillate flowers | sepals 5, equal, 3–3.5 mm, margins entire, apex incurved, abaxial surface stellate-lepidote; petals 0; ovary 3-locular; styles 3, 1–2 mm, multifid, terminal segments 12–24. |
sepals 5–7, connate for 1/2+ length, equal, 3–4 mm, margins entire, apex incurved, abaxial surface lepidote; petals 0; ovary 3-locular; styles 3, 2–4 mm, 1–3 times 2-fid at apex, terminal segments 6–24. |
Capsules | 5–8 × 7–9 mm, smooth; columella 3-winged. |
5–6 × 3–4 mm, smooth; columella 3-angled. |
Seeds | 4.5–6 × 3.7–4.5 mm, dull. |
4–5 × 2.5–3 mm, dull. |
2n | = 28. |
|
Croton punctatus |
Croton argyranthemus |
|
Phenology | Flowering year-round. | Flowering Mar–Sep. |
Habitat | Beaches, dunes. | Deep sandy soils in pinelands, pine-oak scrub, sandhills. |
Elevation | 0–20 m. (0–100 ft.) | 0–200 m. (0–700 ft.) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; e Mexico; Central America; West Indies; n South America
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AL; FL; GA; LA; MS; TX; Mexico (Nuevo León, Tamaulipas)
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Discussion | A report of Croton punctatus from Pennsylvania apparently was based on a transient appearance on ballast (E. T. Wherry et al. 1979). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Croton argyranthemus is closely related to C. coryi. Although they have very different kinds of vegetative indumentum, the staminate petals are characteristically silvery-lepidote in both species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 222. | FNA vol. 12, p. 211. |
Parent taxa | Euphorbiaceae > Croton | Euphorbiaceae > Croton |
Sibling taxa | ||
Synonyms | C. disjunctiflorus, C. maritimus, C. plukenetii | |
Name authority | Jacquin: Collectanea 1: 166. (1787) — (as puntatum) | Michaux: Fl. Bor.-Amer. 2: 215. (1803) — (as argyranthemum) |
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