Hypericum lloydii |
Hypericum ellipticum |
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sandhill St. Johnswort |
millepertuis elliptique, pale Saint John's wort, pale St. John's-wort |
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Habit | Shrubs, decumbent, straggling and rooting, forming low, rounded clumps or mats, 1–5 dm. | Herbs, perennial, erect, with creeping, rhizomatous, ± woody base, usually unbranched, sometimes branched proximally, relatively slender, 1.1–3(–5) dm. |
Stems | internodes (4-) or 6-lined at first, then terete. |
internodes 4-lined. |
Leaf | blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched. |
blades broadly to narrowly elliptic or oblanceolate to oblong-elliptic, 11–35 × 3–13 mm, base not articulated, cuneate to shallowly cordate-amplexicaul, margins plane to subrevolute, apex rounded, midrib with 5–7 pairs of branches. |
Inflorescences | narrowly pyramidal, 1–3-flowered, with 1–3(–5)-flowered dichasia from to 5 proximal nodes, without additional flowering branches; pedicels 0.5 mm. |
corymbiform, (1–)3–15-flowered, narrowly branched, sometimes with branches from 1–2 proximal nodes. |
Flowers | 12–14 mm diam.; sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, (3–)4.5–7 × 0.5–0.8 mm; petals 5, golden yellow, oblanceolate-oblong, 5–7.5 mm; stamens deciduous, 100; ovary 3-merous. |
12–15 mm diam.; sepals persistent, not enclosing capsule, (4–)5, ± lanceolate to lanceolate-elliptic, ± unequal, 6–7 × 2–3 mm; petals (4–)5, pale yellow, sometimes tinged red, obovate to oblanceolate, 6–8 mm; stamens persistent, 70–95; ovary 3-merous, placentation parietal. |
Capsules | ovoid, 3–4 × 2–2.5 mm. |
ellipsoid to globose, 4–7 × 3.5–5 mm. |
Seeds | carinate, 0.7 mm; testa not seen. |
carinate, 0.6–0.7 mm; testa scalariform-reticulate. |
2n | = 16, 18. |
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Hypericum lloydii |
Hypericum ellipticum |
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Phenology | Flowering summer (Aug). | Flowering summer (Jun–Sep). |
Habitat | Dry habitats (pine woods, granite outcrops, roadside embankments), inner coastal plain and foothills | Stream, lake, and pond margins, wet meadows, swamps |
Elevation | 100–300 m (300–1000 ft) | 0–600 m (0–2000 ft) |
Distribution |
AL; GA; NC; SC
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CT; IL; MA; MD; ME; MI; MN; NH; NJ; NY; OH; PA; RI; TN; VT; WA; WI; WV; NB; NF; NS; ON; QC
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Discussion | The habit, leaf shape, and drier habitats distinguish Hypericum lloydii from H. galioides. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Hypericum ellipticum is related to H. sphaerocarpum, differing by the shorter, herbaceous, rhizomatous habit, shorter leaves, and smaller seeds. A submerged aquatic form (forma submersum Fassett) and one with axillary branches developing after fertilization (forma foliosum Marie-Victorin) seem scarcely worth formal recognition. Hypericum ellipticum is introduced in Washington. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 79. | FNA vol. 6, p. 84. |
Parent taxa | Hypericaceae > Hypericum > sect. Myriandra | Hypericaceae > Hypericum > sect. Myriandra |
Sibling taxa | ||
Synonyms | H. galioides var. lloydii | Brathydium canadense, H. brathydium, H. canadense var. oviforme |
Name authority | (Svenson) W. P. Adams: Contr. Gray Herb. 189: 32. (1962) | Hooker: Fl. Bor.-Amer. 1: 110. (1831) |
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