Purshia Dc. ex Poir.

Bitterbrush (en)

Genus

Angiosperms > Rosales > Rosaceae

Characteristics

Shrubs, 2–75 dm. Stems 3–20+, branched; bark cinnamon brown, weathering gray, in thin papery sheets; short shoots present. Leaves persistent or drought-deciduous, ?abscising distal to bases, crowded on short-shoot spurs?, simple; stipules persistent, deltate, margins entire; petiole usually absent, sometimes present; blade linear or ovate to obovate, 0.3–1.5(–1.9) cm, coriaceous, sometimes thin, margins revolute, entire or toothed to lobed, abaxial surface usually densely hairy, adaxial glabrous or sparsely hairy. Inflorescences terminal ?on short shoots?, flowers solitary; bracts present ?resembling immature leaves?; bracteoles absent. Pedicels present. Flowers 10–15(–25) mm diam.; hypanthium obconic, sometimes hemispheric in fruit, 2.5–6.5 mm, exterior villous, stipitate-glandular or not, ?interior glabrous, nectariferous?; sepals 5, spreading-reflexed, ovate to oblong-ovate, ?abaxial surface pubescent-villous?; petals 5, caducous, white, cream-yellow, or yellow [rose red], broadly obovate or obovate-spatulate to spatulate, ?base cuneate to clawed, apex spreading, rounded to emarginate?; stamens (17–)20–80(–125), shorter than petals; torus absent; carpels 1–15(–31), stipitate, stigmas terminal. Fruits achenes, 1, obovoid-fusiform or oblanceoloid, 4–12 mm, leathery; hypanthium persistent; sepals persistent, spreading-reflexing. x = 9.
Life form annual
Growth form shrub
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2 - 7.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer frankia
Photosynthetic pathway -

Environment

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

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Purshia unspecified picture

Distribution

Purshia world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30034502-2
WFO ID wfo-4000032201
COL ID 75K9
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Purshia

Lower taxons

Purshia ericifolia Purshia glandulosa Purshia mexicana Purshia x subintegra Purshia plicata Purshia stansburyana Purshia stansburiana Purshia tridentata