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sharpleaf St. Johnswort

Habit Herbs perennial, erect, unbranched or branching at base and in inflorescence, 4–7.5(–10) dm.
Stems

internodes 4-lined.

Leaves

(main stem) ascending to spreading, sessile;

blade lanceolate to oblong-elliptic or obovate, 10–30(–50) × 3–8(–12) mm, on main stem, longer than internodes, leathery, margins plane, apex usually acute to acuminate, rarely obtuse, basal veins 1–3+, midrib with 2–3 pairs of inconspicuous branches.

Inflorescences

broadly cylindric to corymbiform, 25–70-flowered, branching mostly dichasial, subsidiary branches with or without relatively smaller leaves.

Flowers

8–13 mm diam.;

sepals narrowly ovate to lanceolate, equal, 3–3.5 × 1.5–2.5 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to acuminate;

petals orange-yellow, obovate, 6–10 mm;

stamens 50–80, irregularly grouped;

styles 2–4 mm;

stigmas capitate.

Capsules

ovoid to rostrate-subglobose, 3–5 × 2–3 mm.

Seeds

(0.5–)0.6–0.8(–0.9) mm;

testa reticulate.

2n

= 24.

Hypericum virgatum

Phenology Flowering mid–late summer (Jun–Sep).
Habitat Dry roadsides, fields, open woods
Elevation 0–700 m (0–2300 ft)
Distribution
from FNA
AL; AR; FL; GA; IL; IN; KY; LA; MD; MS; NC; OH; SC; TN; VA; WV
[BONAP county map]
Source FNA vol. 6, p. 90.
Parent taxa Hypericaceae > Hypericum > sect. Brathys
Sibling taxa
H. adpressum, H. anagalloides, H. apocynifolium, H. ascyron, H. boreale, H. brachyphyllum, H. buckleyi, H. canadense, H. canariense, H. chapmanii, H. cistifolium, H. concinnum, H. crux-andreae, H. cumulicola, H. densiflorum, H. denticulatum, H. dolabriforme, H. drummondii, H. edisonianum, H. ellipticum, H. erythreae, H. fasciculatum, H. frondosum, H. galioides, H. gentianoides, H. graveolens, H. gymnanthum, H. harperi, H. hypericoides, H. kalmianum, H. lissophloeus, H. lloydii, H. lobocarpum, H. maculatum, H. majus, H. microsepalum, H. mutilum, H. myrtifolium, H. nitidum, H. nudiflorum, H. paucifolium, H. perforatum, H. prolificum, H. pseudomaculatum, H. punctatum, H. radfordiorum, H. scouleri, H. setosum, H. sphaerocarpum, H. suffruticosum, H. tenuifolium, H. tetrapetalum, H. ×mitchellianum
Synonyms Brathys lanceolata, H. acutifolium, H. denticulatum subsp. acutifolium, H. denticulatum var. acutifolium, H. denticulatum var. recognitum, H. virgatum var. acutifolium
Name authority Lamarck: in J. Lamarck et al., Encycl. 4: 158. (1796)
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