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sandhill St. Johnswort

Drummond's St. Johnswort, nits and lice

Habit Shrubs, decumbent, straggling and rooting, forming low, rounded clumps or mats, 1–5 dm. Herbs annual, erect, branches strict, in distal 1/2, 1–8 dm, wiry.
Stems

internodes (4-) or 6-lined at first, then terete.

internodes 4-lined.

Leaves

blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched.

erect to suberect, sessile;

blade linear or linear-subulate to linear-lanceolate, 5–22 × 0.5–1 mm, subcoriaceous, margins recurved to revolute, apex acute to obtuse, basal vein 1, 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 to broadly triangular, 1–12-flowered, branching mostly monochasial.

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.

5–8 mm diam.;

sepals narrowly oblong to linear-lanceolate, subequal, 3–7 × 0.7–1.3 mm, apex acute;

petals golden yellow to orange-yellow, oblong, 4–7 mm;

stamens 10–22, separate or obscurely 3-fascicled;

styles (0.5–)0.8–1.5 mm;

stigmas broadly capitate.

Capsules

ovoid, 3–4 × 2–2.5 mm.

narrowly ovoid to ovoid-cylindric, 3.5–7 × 2.5–3 mm, length 1–1.2 times sepals.

Seeds

carinate, 0.7 mm;

testa not seen.

0.9–1.1 mm;

testa finely scalariform.

2n

= 24.

Hypericum lloydii

Hypericum drummondii

Phenology Flowering summer (Aug). Flowering summer–early fall (Jul–Sep).
Habitat Dry habitats (pine woods, granite outcrops, roadside embankments), inner coastal plain and foothills Dry, sandy or clay soil in open woods, old fields, waste or rocky places
Elevation 100–300 m (300–1000 ft) 0–1100 m (0–3600 ft)
Distribution
from FNA
AL; GA; NC; SC
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; FL; GA; IA; IL; IN; KS; KY; LA; MO; MS; NC; OH; OK; SC; TN; TX; VA
[WildflowerSearch map]
[BONAP county map]
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 drummondii is closely related to H. gentianoides.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 6, p. 79. FNA vol. 6, p. 95.
Parent taxa Hypericaceae > Hypericum > sect. Myriandra 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. 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. virgatum, H. ×mitchellianum
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. 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. virgatum, H. ×mitchellianum
Synonyms H. galioides var. lloydii Sarothra drummondii, Brathys drummondii
Name authority (Svenson) W. P. Adams: Contr. Gray Herb. 189: 32. (1962) (Greville & Hooker) Torrey & A. Gray: Fl. N. Amer. 1: 165. (1838)
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