Pyrola americana Sweet

American wintergreen (en)

Species

Angiosperms > Ericales > Ericaceae > Pyrola

Characteristics

Plants rhizomatous, 0.1-0.3(-0.4) dm. Leaves: petiole (8-)15-70 mm, channeled adaxially, glabrous; blade not or, sometimes, maculate, dull to shiny and light green to green abaxially, shiny and dark green sometimes with white tissue bordering larger veins adaxially, ovate to obovate or round, 16-73(-80) × 16-70 mm, coriaceous, base rounded to decurrent, margins crenate, apex subacute to obtuse, rounded, or retuse. Inflorescences 1 per stem, 4-22-flowered; peduncular bracts 1-5, oblong-ovate, 5.5-13 × 2-4 mm, chartaceous or membranous, margins entire; inflo-rescence bracts lanceolate-ovate, longer than subtended pedicels, 4-12 × 1.2-3 mm, chartaceous. Pedicels 4-8 mm. Flowers: calyx lobes appressed or spreading in fruit, green or pinkish with margins hyaline to white or pinkish, ovate, ovate-oblong, or obovate, 2-4.3(-4.5) × 1.4-2 mm, margins entire or erose-denticulate, apices obtuse to acute; petals white, often suffused with pink, obovate to round, 6-10.5 × 4.5-5 mm, margins entire; stamens 4-7 mm; filament base 0.6-0.9 mm wide; anthers 2-4.1 mm, apiculations 0.1-0.3 mm, thecae creamy white or greenish white to pink or reddish, tubules yellowish brown to pink or reddish, 0.2-0.3 mm, gradually or abruptly narrowed from thecae, lateral walls touching for most of their lengths, pores 0.1-0.2 × 0.1-0.2 mm; ovary smooth; style exserted, 6-9 mm; stigma 0.7-1.6 mm wide, lobes erect. Capsules depressed-globose, 3-3.5 × 4.2-5 mm. 2n = 46.
Life form perennial
Growth form
Growth support mycoheterotroph
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
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) 4-9

Usage

Uses medicinal
Edible -
Therapeutic use Hunting Medicine (leaf), Dermatological Aid (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Habit

Pyrola americana habit picture by Matthias Foellmer (cc-by-sa)

Leaf

Pyrola americana leaf picture by Matthias Foellmer (cc-by-sa)

Distribution

Pyrola americana world distribution map, present in Canada, France, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:214871-2
WFO ID wfo-0001128975
COL ID 6X2BM
BDTFX ID -
INPN ID 761902
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Pyrola americana