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Physaria obcordata Rollins
Life   Plantae   Dicotyledoneae   Brassicaceae   Physaria

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FamilyScientific name @ source (records)
Andrenidae  Andrena cupreotincta @ BBSL (2)

Andrena hicksi @ BBSL (8)

Andrena laminibucca @ BBSL (1)

Andrena melanochroa @ BBSL (6)

Andrena merriami @ BBSL (1)

Andrena nivalis @ BBSL (2)

Andrena prunorum @ BBSL (7)

Andrena transnigra @ BBSL (3)

Andrena w-scripta @ BBSL (4)

Andrena walleyi @ BBSL (2)
Apidae  Anthophora urbana @ BBSL (1)

Zacosmia maculata @ BBSL (1)
Halictidae  Agapostemon angelicus @ BBSL (1)

Halictus confusus @ BBSL (9)

Halictus tripartitus @ BBSL (3)

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https://plants.usda.gov/java/profile?symbol=PHOB ---> http://plants.usda.gov/core/profile?symbol=PHOB
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Physaria obcordata Rollins
Dudley Bluffs twinpod

Image of Physaria obcordata

General Information
Symbol: PHOB
Group: Dicot
Family: Brassicaceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   N
Data Source and Documentation
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


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©J.S. Peterson. USDA NRCS National Plant Data Center (NPDC). Usage Requirements .

©J.S. Peterson. USDA NRCS National Plant Data Center (NPDC). Usage Requirements .




Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Capparales
Family Brassicaceae ⁄ Cruciferae – Mustard family
Genus Physaria (Nutt. ex Torr. & A. Gray) A. Gray – twinpod
Species Physaria obcordata Rollins – Dudley Bluffs twinpod

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
United States : Dudley Bluffs twinpod Threatened

Wetland Status

Interpreting Wetland Status

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CO-Colorado Natural Areas Program (PHOB)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 7 Page 617, 653 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Physaria

58. Physaria obcordata Rollins, J. Arnold Arbor. 64: 495, fig. 1. 1983.

Piceance twinpod

Perennials; caudex branched, (thick, covered with persistent, overlapping leaf bases); densely (silvery) pubescent, trichomes (stellate-scalelike), several-rayed, rays fused (webbed) to tips. Stems several from base, erect to decumbent, (unbranched, fertile stems from among basal leaves), 1.2-1.8 dm. Basal leaves (erect, not rosulate); blade broadly oblanceolate, 4-8 cm, margins entire or shallowly sinuate-dentate, (apex acute). Cauline leaves: (proximal petiolate); blade narrowly lanceolate, similar to basal in size, (distal with cuneate base), margins entire. Racemes loose, (elongated in fruit). Fruiting pedicels (widely spreading to recurved), 1-1.5 cm. Flowers: sepals (greenish yellow), elliptic, often broadly so, 4.8-7.1 mm; petals oblanceolate, 6.8-9.8 mm. Fruits (usually pendent), slightly didymous apically, obcordate, slightly inflated, 4-7 × 3-6 mm, (papery, basal sinus absent, apical sinus evident to nearly absent); valves (retaining seeds after dehiscence), pubescent; replum broadly obovate to suborbicular, 4-5 mm, as wide as or wider than fruit, margins entire; ovules usually 4 (rarely 6-8) per ovary; style (2.5-)3-4(-5) mm. Seeds plump.

Flowering May-Jun. Steep slopes, fine chiprock, shaley hillsides; of conservation concern; 1800-2300 m; Colo.

Physaria obcordata is known from the Thirteenmile Creek Tongue and the Parachute Creek Member of the Green River Formation. It is in the Center for Plant Conservation's National Collection of Endangered Plants.

Updated: 2018-08-17 10:14:32 gmt
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