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Snake Range bladderpod

Mcvaugh's bladderpod

Habit Perennials; caudex simple; densely pubescent, trichomes 5–7-rayed, rays bifurcate or trifurcate. Perennials; caudex simple or branched, (sometimes enlarged); densely pubescent, trichomes (sessile), several-rayed, rays fused (webbed) most of their length, (umbonate, peltate, tuberculate throughout).
Stems

several from base, erect or outer usually decumbent toward base, (from below a terminal tuft of mostly erect leaves, unbranched), 1–2 dm.

few to several from base, erect or outer ones decumbent, 0.5–4 dm.

Basal leaves

blade ovate to elliptic, 2–4 cm, (base gradually narrowed to petiole), margins entire, (surfaces densely pubescent with trichome layers).

(long-petiolate);

blade elliptic to obovate or rhombic, 2–6(–9) cm, margins entire.

Cauline leaves

(remote, proximal shortly petiolate);

blade spatulate to oblanceolate, similar to basal, (base often cuneate), margins entire.

(sessile or shortly petiolate);

blade oblanceolate to spatulate, 1–3 cm, (proximal broader), margins entire.

Racemes

elongated.

dense, (relatively short).

Flowers

sepals linear-oblong, 5–7 mm, (lateral pair subsaccate);

petals (erect), lingulate, 8–10 mm, (claw barely differentiated from blade).

sepals elliptic or narrowly oblong, 4–5.4 mm, (tapered to apex);

petals (white, base and claw yellow, conspicuously purple-veined), usually broadly obovate or rhombic, 6–10 mm, (± equal to blade, tapering to slender claw).

Fruiting pedicels

(recurved), 7–10 mm.

(erect to spreading, ascending, or (proximal) horizontal, straight to slightly curved, sometimes loosely sigmoid), 6–12(–20) mm.

Fruits

(usually pendent, sessile), subglobose, slightly flattened (angustiseptate), 4–5 mm;

valves densely pubescent, trichomes somewhat spreading;

ovules 8–12 per ovary;

style 4–5 mm.

(sessile or substipitate, often reddish magenta), usually ovoid to subglobose, inflated, 4–6(–7) mm;

valves (not retaining seeds after dehiscence), glabrous;

replum as wide as or wider than fruit;

septum perforate;

ovules 8–12 per ovary;

style 1.5–4 mm.

Seeds

plump, (mucilaginous when wetted).

somewhat flattened.

2n

= 12.

Physaria pendula

Physaria mcvaughiana

Phenology Flowering May–Jun. Flowering mid Mar–Apr(-Aug).
Habitat Limestone gravel and cobbles, typically with junipers Stream bed gravels, rocky limestone slopes and hills, canyon bottoms and slopes, limestone rubble
Elevation 1700-2100 m (5600-6900 ft) 1200-1600 m (3900-5200 ft)
Distribution
from FNA
NV
[BONAP county map]
from FNA
TX; Mexico (Coahuila)
[BONAP county map]
Discussion

Of conservation concern.

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

Source FNA vol. 7, p. 657. FNA vol. 7, p. 650.
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. 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. 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. 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. 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
Synonyms Lesquerella pendula Lesquerella mcvaughiana
Name authority (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) (Rollins) O’Kane & Al-Shehbaz: Novon 12: 325. (2002)
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