Flora of North America species comparison

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Hypericum galioides

bedstraw St. Johnswort
Habit Shrubs, erect, forming rounded clumps, 5–15 dm.
Stems

internodes 6-lined at first, soon 4-lined, then terete.
Leaf

blades narrowly oblong-elliptic or oblanceolate to linear, 15–32(–37) × 1–7 mm, base articulated, attenuate, margins recurved to revolute, apex rounded to acute, midrib obscurely branched.
Inflorescences

narrowly cylindric, 3–15-flowered from apical node, with (1–)3–5-flowered dichasia from 3–4 proximal nodes, sometimes with additional flowering branches.
Flowers

9–14 mm diam.;

sepals deciduous, not enclosing capsule, 5, oblanceolate-spatulate to linear, subequal or equal, 3.5–6.5 × 0.5–1.5 mm;

petals 5, bright yellow, obovate-oblanceolate, 5–9 mm;

stamens deciduous, 60–120;

ovary 3-merous, placentation parietal.
Capsules

narrowly ovoid-conic, 4.5–6 × 2.5–3.5 mm.
Seeds

narrowly carinate, 0.7–0.8 mm;

testa finely reticulate.
2n

= 18.

Hypericum galioides
Phenology Flowering summer (Jun–Aug).
Habitat Wet or moist, open habitats (stream banks, flood plains, roadside ditches, low pine forest, etc.), coastal plain
Elevation 0–200 m (0–700 ft)
Distribution
from FNA
AL; FL; GA; LA; MS; NC; SC; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

The leaves of Hypericum galioides vary considerably in width; the lamina is always visible on either side of the midrib.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 6, p. 78.
Parent taxa Hypericaceae > Hypericum > sect. Myriandra
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. 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 Brathydium ambiguum, H. ambiguum, H. axillare, H. galioides var. ambiguum, H. galioides var. axillare, H. michauxii, Myriandra galioides, M. michauxii
Name authority Lamarck: in J. Lamarck et al., Encycl. 4: 161. (1797)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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