Hypericum brachyphyllum (Spach) Steud.

Coastal plain st. johnswort (en)

Species

Angiosperms > Malpighiales > Hypericaceae > Hypericum

Characteristics

Shrubs, erect, forming round bush, 3–15 dm, <bark smooth, not metallic-silvery>. Stems: internodes sometimes 4-lined at first, soon 2-winged, not terete. Leaf blades linear, 6–12 × 0.5–0.7 mm, base articulated <deciduous with leaf, cf. 8. H. tenuifolium>, parallel, margins revolute, apex rounded-apiculate, midrib unbranched. Inflorescences <± narrowly cylindric>, 3–15-flowered, with 3–5-flowered dichasia or flowering branches from to 10 proximal nodes. Flowers 10–13 mm diam.; sepals deciduous, not enclosing capsule, 5, linear, unequal, 2.5–4.5 × 0.5–1 mm; petals 5, bright yellow, obovate-spatulate, 5–8 mm; stamens deciduous, 40–45; ovary 3-merous; <styles longer than ovaries>. Capsules narrowly cylindric to narrowly ovoid-conic, 3.5–5 × 1.5–2 mm. Seeds not carinate, 0.4–0.6 mm; testa finely reticulate. 2n = 18.
Life form perennial
Growth form shrub
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 1.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

Uses medicinal
Edible -
Therapeutic use Cathartic (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 10 - 12
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Hypericum brachyphyllum unspecified picture

Distribution

Hypericum brachyphyllum world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:433265-1
WFO ID wfo-0001295897
COL ID 3NPDD
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Hypericum brachyphyllum Myriandra brachyphylla