Difference between revisions of "Physaria integrifolia"
Madroño 31: 203. 1984.
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|common_names=Snake River or creeping twinpod | |common_names=Snake River or creeping twinpod | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Physaria didymocarpa var. integrifolia | |name=Physaria didymocarpa var. integrifolia | ||
|authority=Rollins | |authority=Rollins | ||
| + | |publication_title=Rhodora | ||
| + | |publication_place=41: 407. 1939 | ||
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
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|publication year=1984 | |publication year=1984 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V7/V7_1075.xml |
|tribe=Brassicaceae tribe Physarieae | |tribe=Brassicaceae tribe Physarieae | ||
|genus=Physaria | |genus=Physaria | ||
Revision as of 20:20, 24 September 2019
Perennials; caudex usually branched, (rhizomelike, cespitose); densely (silvery) pubescent, trichomes (often stalked, appressed), several-rayed, rays furcate or bifurcate, (umbonate, strongly tuberculate throughout). Stems several from base, ± erect, exceeding basal rosette by ± 0.5 dm. Basal leaves (forming a strong rosette; long-petiolate); blade oblanceolate to ovate or orbicular, (1.5–)2–4(–8) cm, (base usually abruptly tapering to petiole), margins entire. Cauline leaves: blade oblanceolate, 1–2 cm, margin entire, (apex acute). Racemes congested, (greatly exceeding leaves). Fruiting pedicels (spreading, straight or slightly curved), 7–11 mm. Flowers: sepals often keeled, 6–8 mm; petals spatulate, 8–10 mm. Fruits didymous, highly inflated, 8–22 × 10–25 mm, (papery, basal and apical sinuses deep); valves (retaining seeds after dehiscence), densely pubescent, trichomes appressed; replum linear to oblong, as wide as or wider than fruit; ovules 8 per ovary; style 7–9 mm. Seeds flattened. 2n = 16.
Phenology: Flowering (May-)Jun–Jul(-Aug).
Habitat: Calcareous hills and slopes, shale-limestone cliffs, bare steep slopes, red clay banks, shale
Elevation: 1900-2700 m
Distribution
Idaho, Mont., Wyo.
Discussion
Physaria integrifolia has traditionally been recognized as a variety of P. didymocarpa, but it is morphologically and ecologically quite distinctive. Variety monticola (no combination has been made at subspecific rank) is not recognized here; it is considered another example, in the genus, of caudices elongating in response to shifting substrates.
Selected References
None.