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Geyer's bladderpod, Geyer's twin-pod

Photo is of parent taxon

purple twinpod

Habit Perennials; caudex usually simple, (cespitose); (silvery) pubescent throughout, trichomes (sessile), 6–8-rayed, rays mostly furcate, (tuberculate to nearly smooth).
Stems

several from base, decumbent, (arising laterally, unbranched), 1–3 dm.

Basal leaves

(numerous); (petiole slender, rarely with a few broad teeth);

blade obovate, 3–7 cm, margins entire.

Cauline leaves

blade oblanceolate, 1.5–3 cm, margins entire.

Racemes

loose.

Flowers

sepals oblong, 5–7 mm;

petals (yellow to purplish), spatulate, 8–12 mm.

Fruiting pedicels

(ascending or spreading, slightly curved or sigmoid), 1–2 cm.

Fruits

obcordate, angustiseptate, somewhat inflated, (not bladdery), 5–7 × 6–9 mm, (papery, basal sinus absent, apical sinus broad and open);

valves (retaining seeds after dehiscence), loosely pubescent, trichomes spreading;

replum ovate, 5–7 mm, as wide as or wider than fruit, apex acute or obtuse;

ovules 4–6 per ovary;

style 5–7 mm.

replum apex obtuse;

ovules usually 6 per ovary.

Trichomes

nearly smooth.

Petals

purplish or light yellow, drying purplish.

2n

= 8.

Physaria geyeri

Physaria geyeri subsp. purpurea

Phenology Flowering May–Jul.
Habitat Steep marly hillsides, steep slides, fine talus, scree, sandy road cuts
Elevation 1200-2200 m (3900-7200 ft)
Distribution
from FNA
ID; MT; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
ID
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Replum apices acute; ovules 4 per ovary; petals yellow, drying yellow.
subsp. geyeri
1. Replum apices obtuse; ovules usually 6 per ovary; petals purplish or light yellow, drying purplish.
subsp. purpurea
Source FNA vol. 7, p. 638. FNA vol. 7, p. 639.
Parent taxa Brassicaceae > tribe Physarieae > Physaria Brassicaceae > tribe Physarieae > Physaria > Physaria geyeri
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. 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. geyeri subsp. geyeri
Subordinate taxa
P. geyeri subsp. geyeri, P. geyeri subsp. purpurea
Synonyms Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri P. geyeri var. purpurea
Name authority (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) (Rollins) O’Kane: Novon 17: 380. (2007)
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