Hypericum lloydii |
Hypericum lissophloeus |
|
---|---|---|
sandhill St. Johnswort |
smooth-bark St. John's wort |
|
Habit | Shrubs, decumbent, straggling and rooting, forming low, rounded clumps or mats, 1–5 dm. | Shrubs, erect, sparsely branched, forming dense clumps sometimes with prop roots, to 40 dm, bark smooth and metallic-silvery, without laticifers, exfoliating in thin, curled plates. |
Stems | internodes (4-) or 6-lined at first, then terete. |
internodes 4-lined at first, soon 4-angled, then terete, dull silvery, glaucous. |
Leaf | blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched. |
blades linear-subulate to acicular, (9–)12–17 × 0.5–0.8 mm, glaucous, base articulated, parallel or almost so, margins revolute, apex obtuse to rounded, 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. |
narrowly cylindric, 1–3-flowered, usually with paired flowers or triads from to 9 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. |
20 mm diam.; sepals deciduous, not enclosing capsule, 5, linear-subulate, subequal, 7–8 × 0.5–0.8 mm, glaucous; petals 5, bright yellow, obovate-spatulate, 10–12 mm; stamens deciduous, 170–220; ovary 3-merous; styles 5 mm. |
Capsules | ovoid, 3–4 × 2–2.5 mm. |
narrowly ovoid to ellipsoid, 6–7 × 2.5–3.5 mm. |
Seeds | carinate, 0.7 mm; testa not seen. |
narrowly carinate, 1–1.6 mm; testa coarsely reticulate-sulcate. |
2n | = 18. |
|
Hypericum lloydii |
Hypericum lissophloeus |
|
Phenology | Flowering summer (Aug). | Flowering summer–early fall (Jun–Oct). |
Habitat | Dry habitats (pine woods, granite outcrops, roadside embankments), inner coastal plain and foothills | Pond and lake margins to 1.5 m deep water |
Elevation | 100–300 m (300–1000 ft) | 0–10 m (0–0 ft) |
Distribution |
AL; GA; NC; SC
|
FL |
Discussion | The habit, leaf shape, and drier habitats distinguish Hypericum lloydii from H. galioides. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Hypericum lissophloeus is found in Bay and Washington counties. The larger capsules, one- to three-flowered, lateral inflorescence branches, and smooth-polished, metallic bark (that exfoliates like that of Betula species) are among the features that distinguish H. lissophloeus from H. fasciculatum, H. nitidum, and their allies (H. brachyphyllum and H. chapmanii). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 79. | FNA vol. 6, p. 80. |
Parent taxa | Hypericaceae > Hypericum > sect. Myriandra | Hypericaceae > Hypericum > sect. Myriandra |
Sibling taxa | ||
Synonyms | H. galioides var. lloydii | |
Name authority | (Svenson) W. P. Adams: Contr. Gray Herb. 189: 32. (1962) | W. P. Adams: Contr. Gray Herb. 189: 21. (1962) |
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