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Strict Genus: Physaria

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Search by botanical or common name, genus, or family. SilvaGrid also recognizes many botanical synonyms and standard hybrid notation.

Name search: Use Botanical or Common Name to search a full botanical name such as Acer palmatum, a genus such as Acer, or a common name such as maple.
Synonyms: The same field recognizes many outdated or alternative botanical names and links them to their currently accepted taxa.
Hybrids and graft chimaeras: In the same field, you can type a standard 'x' in place of the botanical hybrid symbol (×). Use '+' when searching for graft chimaeras.
Family search: Use Botanical Family to explore taxa within a family such as Rosaceae.

1. Climate

About climate mapping

To make searching practical, SilvaGrid groups the bioclimatic zones from the World Checklist of Vascular Plants (WCVP) into five primary macro-climates:

Tropical: Equatorial and tropical zones defined by consistent year-round warmth. This encompasses the wet tropics, seasonally dry tropics, and cooler high-altitude montane tropics.
Subtropical: Warm transition zones between tropical and temperate regions, typically characterized by mild, largely frost-free winters. (Note: WCVP groups dry-summer Mediterranean climates within this broader biome).
Temperate: Mid-latitude climates defined by distinct seasonal shifts, including a true winter season where regular frosts and plant dormancy are expected.
Arid: Moisture-deficient climates—including true deserts and dry shrublands—where evaporation exceeds precipitation, requiring severe drought adaptations.
Cold: High-latitude subarctic or high-altitude subalpine climates defined by severe winters, prolonged freezing, and highly restricted growing seasons.

These categories describe a species' primary native environment and serve as a broad baseline for cultivation. While many plants can be successfully grown across multiple macroclimates—for example, some species mapped to the Tropical macroclimate can also be grown in temperate climates—others may have much narrower climatic requirements within their mapped macroclimate. Local factors such as frost hardiness, summer heat, rainfall and soil conditions should always be considered before planting.

2. Plant Types

About plant types

SilvaGrid Plant Types are practical horticultural and botanical groupings derived from WCVP life-form descriptions, taxonomy, or a combination of the two. Some correspond closely to established botanical groups, while others bring together plants with similar growth forms for practical discovery.

Trees: Woody plants with persistent above-ground stems, generally forming an elevated crown or canopy. Large herbaceous tree-like plants are excluded.
Shrubs: Woody or partly woody plants with a shrub or subshrub growth form, typically branching low rather than forming a single main trunk.
Climbers & Vines: Plants with a climbing growth habit, including herbaceous climbers and woody lianas that use other vegetation or structures for support.
Conifers: Gymnosperms from the major conifer families, including pines, cypresses, podocarps and their relatives, ranging from low shrubs to large trees.
Palms & Cycads: True palms from the Arecaceae family together with cycads. The two are not close botanical relatives, but are grouped here as a practical horticultural and landscape category.
Ferns: Vascular, spore-producing plants within the fern group, ranging from small ground-layer and epiphytic forms to large tree ferns.
Grasses, Sedges & Rushes: A practical group combining true grasses, sedges, rushes and restios. Bamboos are shown separately because of their distinctive growth form.
Bamboos: Members of the grass family, shown separately from other grasses because of their distinctive growth forms and horticultural use.
Herbaceous Perennials: Non-woody, multi-year plants, including evergreen tropical perennials and large herbaceous forms. Bulbs and other geophytes are shown separately.
Annuals & Biennials: Short-lived plants that complete their life cycle over one or two growing seasons.
Bulbs & Geophytes: Plants with underground storage organs such as bulbs, corms, tubers or rhizomes, allowing them to persist through seasonal dormancy.
Cacti & Succulents: Cacti and other succulent plants with fleshy or thickened tissues associated with water storage, spanning many unrelated botanical groups.
Aquatic & Pond Plants: Plants adapted to living in water or water-saturated soils, including submerged, floating and emergent forms.
Air Plants & Epiphytes: Epiphytic and lithophytic plants that grow on trees or rocks, including many plants commonly described as air plants.

3. Native range (WGSRPD)

Continent

Region

Botanical country

About WGSRPD mapping

SilvaGrid uses the World Geographical Scheme for Recording Plant Distributions (WGSRPD) to organise native plant distributions. WGSRPD is an international botanical standard maintained by Biodiversity Information Standards (TDWG) and is also used by the World Checklist of Vascular Plants (WCVP).

Botanical geography: SilvaGrid uses WGSRPD continents, regions and "botanical countries". These provide consistent units for recording plant distributions, but they do not always correspond exactly to modern political countries.
Consistent distribution data: Using the same geographic framework as WCVP allows SilvaGrid to preserve and compare native-range information consistently across the global plant dataset.

WGSRPD is a system for recording plant distributions rather than a climate, habitat or site-suitability classification.

Genus Physaria

View Botanical Profile & Insights

Herbaceous perennials make up the vast majority of the genus Physaria, a member of the Brassicaceae family, which comprises 158 taxa. It is native to North America, South America, and Temperate Asia. It is most often linked to temperate and subalpine or subarctic regions.

Data Profile

Taxonomic Scale: 158 taxa (110 base species, 48 variants).
Centers of Diversity: North America (153), South America (7), Temperate Asia (2)
Primary Climates: Subalpine Or Subarctic (69), Temperate (49), Desert Or Dry Shrubland (20)
Dominant Forms: Herbaceous Perennials (123), Annuals & Biennials (16), Shrubs (3)

158 taxa found

Showing 30 (page 1 of 6)

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Physaria acutifolia

— Sharpleaf Twinpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria acutifolia var. acutifolia

— Sharpleaf Twinpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria acutifolia var. canaani

Family: Brassicaceae

Cold Herbaceous Perennials

Physaria alpestris

— Alpine Twinpod, Washington Twinpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria alpina

— Avery Peak Twinpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria angustifolia

— Threadleaf Bladderpod Family: Brassicaceae

Temperate Annuals

Physaria arctica

— Arctic Bladderpod, Northern Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria arenosa

— Great Plains Bladderpod, Sand Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials Annuals

Physaria arenosa subsp. arenosa

— Great Plains Bladderpod, Sand Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials Annuals

Physaria arenosa subsp. argillosa

— Great Plains Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials

Physaria argentea

Family: Brassicaceae

Physaria argyraea

— Silver Bladderpod Family: Brassicaceae

Arid Herbaceous Perennials

Physaria argyraea subsp. argyraea

— Silver Bladderpod Family: Brassicaceae

Arid Herbaceous Perennials

Physaria argyraea subsp. diffusa

Family: Brassicaceae

Arid Herbaceous Perennials

Physaria arizonica

— Arizona Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials

Physaria aurea

— Golden Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials Annuals

Physaria bellii

— Front Range Twinpod Family: Brassicaceae

Temperate Herbaceous Perennials

Physaria berlandieri

Family: Brassicaceae

Physaria brassicoides

— Double Bladderpod, Double Twinpod Family: Brassicaceae

Temperate Herbaceous Perennials

Physaria calcicola

— Rocky Mountain Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials

Physaria calderi

— Calder's Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria carinata

— Idaho Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria carinata subsp. carinata

— Idaho Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria carinata subsp. paysonii

— Idaho Bladderpod, Payson's Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria carinata subsp. pulchella

— Beautiful Bladderpod, Idaho Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria chambersii

— Chamber's Twinpod, Chambers' Twinpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria cinerea

— Basin Bladderpod Family: Brassicaceae

Temperate Herbaceous Perennials

Physaria condensata

— Dense Twinpod, Tufted Twinpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria congesta

— Dudley Bluffs Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

Physaria cordiformis

— Wassuk Range Bladderpod Family: Brassicaceae

Cold Herbaceous Perennials

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