Hypericum cistifolium

Lamarck in J. Lamarck et al.
in J. Lamarck et al., Encycl. 4: 158. 1797.
EndemicIllustrated
Synonyms: Hypericum opacum Torrey & A. Gray H. punctulosum Bertoloni H. rosmarinifolium Lamarck
Treatment appears in FNA Volume 6. Treatment on page 82. Mentioned on page 75, 83.

Shrubs, erect, unbranched or with relatively short branches and sometimes 1–2 branches ascending from proximal nodes, 5–13 dm. Stems: internodes 4-lined at first, then terete. Leaf blades narrowly oblong or narrowly elliptic-oblong to triangular-lanceolate, 15–40 × 2–10 mm, base not articulated, cuneate to subcordate, margins recurved, apex subacute to rounded, midrib with 1 pair of branches. Inflorescences corymbiform to cylindric, (7–)15–65-flowered, narrowly branched, sometimes with 3–65-flowered dichasia from 1–2 proximal nodes and relatively short, flowering branches from further 1–4 nodes. Flowers 7–12 mm diam.; sepals persistent, not enclosing capsule, 5, obovate or broadly elliptic to oblong, unequal, 2–4 × 1–1.7 mm; petals 5, bright yellow, oblanceolate, 5–8 mm; stamens (some or all) persistent, 30–50; ovary 3-merous, placentation parietal. Capsules ovoid-cylindric to broadly ovoid, 4–6 × 3–4 mm. Seeds not carinate, 0.6 mm; testa reticulate to linear-foveolate. 2n = 18.


Phenology: Flowering spring–early fall (Apr–Oct).
Habitat: Pine flatwoods, margins of bogs, swamps, and marshes, ditches, on sand, coastal plain
Elevation: 0–300 m

Distribution

V6 133-distribution-map.jpg

Ala., Fla., Ga., La., Miss., N.C., S.C., Tex.

Discussion

Hypericum cistifolium is woodier in habit than H. sphaerocarpum and has shorter leaves, smaller flowers, narrower sepals, narrower capsules, and smaller seeds.

Selected References

None.

Lower Taxa

None.

... more about "Hypericum cistifolium"
Norman K. B. Robson +
Lamarck in J. Lamarck et al. +
Undefined sect. Myriandra +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +  and Tex. +
0–300 m +
Pine flatwoods, margins of bogs, swamps, and marshes, ditches, on sand, coastal plain +
Flowering spring–early fall (Apr–Oct). +
in J. Lamarck et al., Encycl. +
Endemic +  and Illustrated +
Hypericum opacum +, H. punctulosum +  and H. rosmarinifolium +
Hypericum cistifolium +
Hypericum sect. Myriandra +
species +