Flora of North America species comparison

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Physaria argyraea

Physaria arctica

silver bladderpod

arctic bladderpod
Habit Perennials; caudex simple or branched, (woody, cespitose); ± densely pubescent, trichomes (sessile or short-stalked), several-rayed, rays distinct, furcate or bifurcate, (somewhat umbonate, finely tuberculate to ± smooth).
Stems

simple or few to several from base, erect to spreading or prostrate, 0.5–2(–3) dm.
Basal leaves

(usually ± rosulate);

blade obovate to oblanceolate, (1–)2–6(–15) cm, margins entire.
Cauline leaves

(sessile or shortly petiolate);

blade oblanceolate or lingulate, 0.5–1.5(–3) cm, margins entire.
Racemes

loose.
Flowers

sepals ovate to elliptic, (3–)4–5(–6) mm, (median pair often thickened apically, cucullate);

petals spatulate, 5–6(–7) mm, (blade gradually narrowed to claw).
Fruiting pedicels

(erect to divaricate or ascending), (5–)10–20(–40) mm, (stout).
Fruits

subglobose to ellipsoid, uncompressed, 4–6(–9) mm;

valves (not retaining seeds after dehiscence), glabrous or sparsely pubescent outside, trichomes sessile;

replum as wide as or wider than fruit;

ovules (8–)10–14(–16) per ovary;

style 1–2.5(–4) mm.
Seeds

plump.
2n

= 60.

Physaria argyraea

Physaria arctica
Phenology Flowering May–Aug.
Habitat Typically on sand and gravel from calcareous bedrock, river bars and terraces, cliff ledges, scree and talus slopes, often growing after disturbance
Elevation 0-1800 m (0-5900 ft)
Distribution
from FNA
TX; n Mexico
[BONAP county map]
from FNA
AK; AB; BC; MB; NL; NT; NU; QC; YT; Greenland; circumarctic (except n Europe, ne Russia)
[BONAP county map]
Discussion

Subspecies 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 627. FNA vol. 7, p. 626.
Parent taxa Brassicaceae > tribe Physarieae > Physaria Brassicaceae > tribe Physarieae > Physaria
Sibling taxa
P. acutifolia, P. alpestris, P. alpina, P. angustifolia, P. arctica, P. arenosa, P. arizonica, P. aurea, P. bellii, P. brassicoides, P. calcicola, P. calderi, P. carinata, P. chambersii, P. cinerea, P. condensata, P. congesta, P. cordiformis, P. curvipes, P. densiflora, P. didymocarpa, P. dornii, P. douglasii, P. eburniflora, P. engelmannii, P. eriocarpa, P. fendleri, P. filiformis, P. floribunda, P. fremontii, P. garrettii, P. geyeri, P. globosa, P. gooddingii, P. gordonii, P. gracilis, P. grahamii, P. hemiphysaria, P. hitchcockii, P. humilis, P. integrifolia, P. intermedia, P. kingii, P. klausii, P. lata, P. lepidota, P. lesicii, P. lindheimeri, P. ludoviciana, P. macrocarpa, P. mcvaughiana, P. montana, P. multiceps, P. navajoensis, P. nelsonii, P. newberryi, P. obcordata, P. obdeltata, P. occidentalis, P. oregona, P. ovalifolia, P. pachyphylla, P. pallida, P. parviflora, P. parvula, P. pendula, P. pinetorum, P. prostrata, P. pruinosa, P. pulvinata, P. purpurea, P. pycnantha, P. rectipes, P. recurvata, P. reediana, P. rollinsii, P. saximontana, P. scrotiformis, P. sessilis, P. spatulata, P. subumbellata, P. tenella, P. thamnophila, P. tumulosa, P. valida, P. vicina, P. vitulifera
P. acutifolia, P. alpestris, P. alpina, P. angustifolia, P. arenosa, P. argyraea, P. arizonica, P. aurea, P. bellii, P. brassicoides, P. calcicola, P. calderi, P. carinata, P. chambersii, P. cinerea, P. condensata, P. congesta, P. cordiformis, P. curvipes, P. densiflora, P. didymocarpa, P. dornii, P. douglasii, P. eburniflora, P. engelmannii, P. eriocarpa, P. fendleri, P. filiformis, P. floribunda, P. fremontii, P. garrettii, P. geyeri, P. globosa, P. gooddingii, P. gordonii, P. gracilis, P. grahamii, P. hemiphysaria, P. hitchcockii, P. humilis, P. integrifolia, P. intermedia, P. kingii, P. klausii, P. lata, P. lepidota, P. lesicii, P. lindheimeri, P. ludoviciana, P. macrocarpa, P. mcvaughiana, P. montana, P. multiceps, P. navajoensis, P. nelsonii, P. newberryi, P. obcordata, P. obdeltata, P. occidentalis, P. oregona, P. ovalifolia, P. pachyphylla, P. pallida, P. parviflora, P. parvula, P. pendula, P. pinetorum, P. prostrata, P. pruinosa, P. pulvinata, P. purpurea, P. pycnantha, P. rectipes, P. recurvata, P. reediana, P. rollinsii, P. saximontana, P. scrotiformis, P. sessilis, P. spatulata, P. subumbellata, P. tenella, P. thamnophila, P. tumulosa, P. valida, P. vicina, P. vitulifera
Subordinate taxa
P. argyraea subsp. argyraea
Synonyms Vesicaria argyraea, Alyssum argyraeum, Lesquerella argyraea Alyssum arcticum, Lesquerella arctica, Lesquerella arctica subsp. purshii, Vesicaria arctica, Vesicaria leiocarpa
Name authority (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) (Wormskjöld ex Hornemann) O’Kane & Al-Shehbaz: Novon 12: 321. (2002)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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