Hypericum lloydii |
Hypericum ascyron |
|
---|---|---|
sandhill St. Johnswort |
great or giant St. John's wort, great St. John's-wort |
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Habit | Shrubs, decumbent, straggling and rooting, forming low, rounded clumps or mats, 1–5 dm. | |
Stems | internodes (4-) or 6-lined at first, then terete. |
|
Leaf | blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched. |
|
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. |
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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. |
|
Capsules | ovoid, 3–4 × 2–2.5 mm. |
|
Seeds | carinate, 0.7 mm; testa not seen. |
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Hypericum lloydii |
Hypericum ascyron |
|
Phenology | Flowering summer (Aug). | |
Habitat | Dry habitats (pine woods, granite outcrops, roadside embankments), inner coastal plain and foothills | |
Elevation | 100–300 m (300–1000 ft) | |
Distribution |
AL; GA; NC; SC
|
CT; IA; IL; IN; KS; MA; MD; MI; MN; MO; NY; OH; PA; VT; WI; ON; QC; Asia (e China, Japan, Korea, Siberia)
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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.) |
Subspecies 3 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 79. | FNA vol. 6, p. 97. |
Parent taxa | Hypericaceae > Hypericum > sect. Myriandra | Hypericaceae > Hypericum > sect. Roscyna |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | H. galioides var. lloydii | |
Name authority | (Svenson) W. P. Adams: Contr. Gray Herb. 189: 32. (1962) | Linnaeus: Sp. Pl. 2: 783. (1753) |
Web links |