WorldFloraDB - Hypericum densiflorum

Characteristics

Shrubs, erect, forming slender bush, 6–30 dm. Stems: internodes 4-lined at first, soon 2-lined to terete. Leaf blades narrowly elliptic-oblong or oblanceolate to linear, 20–45 × 2–7 mm, base articulated, narrowly cuneate to attenuate, margins recurved to revolute, apex apiculate-rounded to subacute, midrib with 14–17 pairs of branches. Inflorescences <broadly pyramidal to broadly cylindric>, 5–25-flowered <from apical node>, with (2–)5–15-flowered dichasia from 1–2 proximal nodes. Flowers 10–17(–20) mm diam.; sepals deciduous, not enclosing capsule, 5, narrowly oblong to oblanceolate-spatulate, unequal or subequal, 4–6 × 1–1.5 mm, <basal veins 1–3>; petals 5, deep golden yellow, obovate-oblanceolate, 6–9 mm; stamens deciduous, 100–150; ovary 3–4(–5)-merous. Capsules narrowly ovoid conic to cylindric-ovoid, 5–6(–7) × 2–3 mm, <not or scarcely lobed>. Seeds not carinate, 0.8–1.3 mm; testa linear-reticulate. 2n = 18.

More

Shrub to 2(–3) m, much-branched above; lvs articulate at the base, linear to narrowly elliptic or commonly oblanceolate, 2–4(–5) cm × 5–8 mm; fls 7–many in a large, compound, dichasial cyme, 10–15 mm wide; styles 3(4), connate at the base and forming a beak on the fr; fr mostly 4.5–6 mm, to 3 mm thick, shallowly or obscurely sulcate, quasi-3(4)-locular, the partitions meeting in the center but not joined. Wet meadows and moist bottomlands, less often on rocky slopes, coastal plain from N.J. to S.C., and in the mts. from sw. Pa. to n. Ga. and c. Ala. July–Sept.

Life form

perennial

Growth form

shrub

Growth support

-

Foliage retention

deciduous

Sexuality

hermaphrodite

Pollination

-

Spread

-

Mature width (meter)

-

Mature height (meter)

2.0

Root system

-

Rooting depth (meter)

0.5

Root diameter (meter)

-

Flower color

-

Blooming months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Fruit color

-

Fruiting months

-

Nitrogen fixer

-

Photosynthetic pathway

-

Environment

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

Usage

Uses	-
Edible	-
Therapeutic use	-
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	-