Flora of North America species comparison

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Physaria pachyphylla

thick-leaf bladderpod
Habit Perennials; caudex usually simple, rarely branched, (loosely mounded, rosette-like growth); densely (silvery or gray) pubescent, trichomes (sessile), 5-rayed, rays bifurcate, slightly fused near base of main rays, (tuberculate throughout, less over umbo).
Stems

several from base, decumbent to prostrate, (well-exserted beyond basal leaves), 0.2–0.5 dm.
Basal leaves

(petiole differentiated from blade);

blade (slightly cupped, leathery, nearly 1 mm thick), oblanceolate to orbicular, 1.2–2 cm, margins entire, (apex acute).
Cauline leaves

blade spatulate, similar to basal.
Racemes

dense, (subumbellate).
Flowers

sepals (pale yellow), elliptic to oblong, 3.5–4.0 mm, (median pair somewhat thickened apically, cucullate);

petals lingulate, 5–6 mm.
Fruiting pedicels

(ascending, curved), 5–7 mm.
Fruits

globose or ellipsoid, slightly inflated (with slight apical constriction), 3–6 mm;

valves pubescent, trichomes closely appressed;

ovules 8 per ovary;

style 1–3 mm (shorter than mature fruit).
Seeds

plump, (oblong).

Physaria pachyphylla
Phenology Flowering Jun–Jul.
Habitat Barren areas of mixed white, pink, or reddish limestone and diatomaceous earth
Elevation 1300-1600 m (4300-5200 ft)
Distribution
from FNA
MT
[BONAP county map]
Discussion

Of conservation concern.

Physaria pachyphylla is known from the Pryor Mountain Desert near the Wyoming state line.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 656.
Parent taxa Brassicaceae > tribe Physarieae > Physaria
Sibling taxa
P. acutifolia, P. alpestris, P. alpina, P. angustifolia, P. arctica, 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. 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
Name authority O’Kane & Grady: Novon 17: 187, fig. 4. (2007)
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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