Hypericum lloydii |
Hypericum mutilum |
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sandhill St. Johnswort |
dwarf St. John's-wort, small Canadian St. John's-wort, small flower st john's wort |
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Habit | Shrubs, decumbent, straggling and rooting, forming low, rounded clumps or mats, 1–5 dm. | Herbs annual or perennial, usually erect, sometimes decumbent and rooting, basal branches sometimes present, usually with to 10 pairs of spreading branches distal to middle, 0.5–8 dm. | ||||
Stems | internodes (4-) or 6-lined at first, then terete. |
internodes 4-angled. |
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Leaves | blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched. |
spreading, sessile or amplexicaul; blade paler abaxially, ovate, elliptic, or elliptic-oblong (proximal), ovate or suborbiculate to elliptic or lanceolate (mid and distal), 3–27(–40) × 1–15 mm, papery to membranous, margins plane, apex obtuse to rounded, basal veins 3–5, midrib with to 3 pairs of branches. |
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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. |
cylindric, 5–60-flowered, branching mostly dichasial; bracts linear-subulate. |
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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. |
3–5 mm diam.; sepals lanceolate to linear-lanceolate or elliptic-oblong to oblanceolate, equal or unequal, 2–4.5 × 0.6–1.5 mm, margins sometimes ciliate, not setulose-ciliate, apex usually acute to apiculate, sometimes obtuse to rounded; petals pale yellow, oblong, 1.7–3.5 mm; stamens 5–16, scarcely grouped; styles 0.5 mm; stigmas broadly capitate. |
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Capsules | ovoid, 3–4 × 2–2.5 mm. |
narrowly ovoid to cylindric-ellipsoid, 2–5 × 1.6–2.4 mm, usually broadest at or near middle. |
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Seeds | carinate, 0.7 mm; testa not seen. |
0.4–0.7 mm; testa finely linear-scalariform. |
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Hypericum lloydii |
Hypericum mutilum |
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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
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AL; AR; CA; CO; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MO; MS; NC; NE; NH; NJ; NY; OH; OK; OR; PA; RI; SC; TN; TX; UT; VA; VT; WA; WI; WV; BC; NB; NS; ON; QC; SK [Introduced in w North America]
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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 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 6, p. 79. | FNA vol. 6, p. 93. | ||||
Parent taxa | Hypericaceae > Hypericum > sect. Myriandra | Hypericaceae > Hypericum > sect. Brathys | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | H. galioides var. lloydii | Sarothra mutila | ||||
Name authority | (Svenson) W. P. Adams: Contr. Gray Herb. 189: 32. (1962) | Linnaeus: Sp. Pl. 2: 787. (1753) | ||||
Web links |
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