Physaria chambersii
Physaria newberryi
Chambers' bladder-pod, Chambers' physaria, Chambers' twinpod, double bladderpod
Newberry twinpod, Newberry's twinpod
several from base, erect or decumbent (arising laterally, unbranched), 0.5–1.5 mm.
several from base, ascending to erect (arising laterally, unbranched), 0.5–1(–2.5) dm.
(petiole slender);
blade obovate to orbicular, 3–6 cm (width 10–20 mm), margins entire or dentate.
(ascending to erect, petiole slender);
blade oblanceolate to obovate, 3–8 cm, (base tapering to petiole), margins incised or dentate with broad teeth, (apex acute to obtuse).
blade spatulate, 1–2 cm (width 3–6 mm), margins entire, (apex often acute).
blade linear-oblanceolate to oblanceolate, 1–2 cm, margins entire.
congested.
dense (elongated or not in fruit, 2.5–8.5(–10) cm).
sepals narrowly lanceolate, 5–8(–9) mm;
petals narrowly oblanceolate, 9–12 mm, (claw undifferentiated from blade).
sepals (greenish yellow), lanceolate, 6–8.5 mm, (saccate and cucullate);
petals spatulate to narrowly oblanceolate, 7–10(–12) mm.
(divaricate, slightly sigmoid), 8–15 mm.
(divaricate, straight), 5–11(–15) mm, (rigid, fruits not pendent on arching pedicels).
(often purplish in age), didymous, subreniform, strongly inflated, 9–18 × 11–21(–30) mm, (papery, base obtuse to slightly cordate, apical sinus V-shaped or convex, open crests rounded);
valves (2-keeled on side away from replum, each 3-sided, keels rounded, sides flat or slightly convex, retaining seeds after dehiscence), evenly and densely pubescent;
replum oblong, as wide as or wider than fruits, apex obtuse;
ovules 4–12 per ovary;
style (4–)6–8 mm (exceeding sinus).
didymous, sides curved and angular, highly inflated, 6–16 × 8–12 mm, (papery, apical sinus broad and concave);
valves (retaining seeds after dehiscence, distinctly 2-keeled on side away from replum), pubescent, trichomes appressed;
replum linear to linear-lanceolate, as wide as or wider than fruit, apex acute;
ovules 4–8 per ovary;
style 2–9 mm, (usually not exceeding sinus).
flattened.
slightly flattened, (ovate).
= 8, 10, 16, 24.
Physaria chambersii
Physaria newberryi
Physaria chambersii has been divided into three varieties based on whether the fruit is stipitate (var. canaani) or not, and whether the caudex elongates (var. sobolifera) or not (var. chambersii). In this species and in some others, e.g., P. newberryi, the latter character often depends on substrate and microclimate. Shifting substrates, such as moving sand and talus, often cause caudices to elongate. The species can be confused with 57. P. newberryi.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 2 (2 in the flora).
Physaria newberryi, with its unusual fruits, can be confused with 15. P. chambersii. In P. chambersii, the sides of the fruit are flat, the style always exceeds the top, or shoulders, of the fruit, and shoulders form an angle that does not curve in toward the style. In P. newberryi, the sides of the fruit are concave, the styles are shorter than shoulders of the silicle (except in subsp. yesicola), and shoulders of the silicle form a curved, inward arching crown on the fruit.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Styles less than 4 mm, shorter than fruit sinuses. | subsp. newberryi |
1. Styles 5-9 mm, longer than fruit sinuses. | subsp. yesicola |
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
