Hypericum lloydii |
Hypericum apocynifolium |
|
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sandhill St. Johnswort |
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Habit | Shrubs, decumbent, straggling and rooting, forming low, rounded clumps or mats, 1–5 dm. | Shrubs, erect, branches ascending, 4–7 dm. |
Stems | internodes (4-) or 6-lined at first, then terete. |
internodes narrowly 4-winged at first, then 2-lined. |
Leaf | blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched. |
blades oblong to elliptic-oblong, 20–40 × 12–20 mm, base not articulated, broadly cuneate, margins usually plane, rarely recurved, apex rounded to retuse, midrib with 6 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. |
terminal (1–)3–5(–8)-flowered, narrowly branched. |
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. |
15 mm diam.; sepals tardily deciduous, not enclosing capsule, 5, spatulate to elliptic or ovate, unequal, 3–5 × 1.5–2.3 mm; petals 5, coppery yellow, oblong, 8–10 mm length 2 times sepals; stamens deciduous, 60–80; ovary 3-merous, placentation incompletely axile. |
Capsules | ovoid, 3–4 × 2–2.5 mm. |
cylindric-conic, 6–15 × 4.5–8 mm. |
Seeds | carinate, 0.7 mm; testa not seen. |
scarcely carinate, 1.8–2 mm; testa finely scalariform-reticulate. |
Hypericum lloydii |
Hypericum apocynifolium |
|
Phenology | Flowering summer (Aug). | Flowering summer (Jun). |
Habitat | Dry habitats (pine woods, granite outcrops, roadside embankments), inner coastal plain and foothills | Stream banks and moist woods, coastal plain and inland valleys |
Elevation | 100–300 m (300–1000 ft) | 10–500 m (0–1600 ft) |
Distribution |
AL; GA; NC; SC
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AR; FL; LA; OK; TX |
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 apocynifolium has been included in H. nudiflorum; it can be distinguished from the latter by the fewer, larger flowers with relatively longer, persistent sepals, the larger, thicker-walled capsules, and the seeds, which are ridged and straight rather than carinate and curved. A record from Georgia in the Flint River drainage has not been verified. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 79. | FNA vol. 6, p. 82. |
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) | Small: Bull. Torrey Bot. Club 25: 616. (1898) |
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