Physaria acutifolia
double bladderpod, pointleaf twinpod, Rydberg's twinpod, sharpleaf twinpod
several from base, usually somewhat decumbent, (unbranched), (0.4–)0.5–2 dm.
(petiole slender, often narrowly winged);
blade obovate to orbicular or rhombic-orbicular, 2–9 cm, (base abruptly narrowed to petiole), margins usually entire, rarely with few scattered teeth, (apex rounded or obtuse, sometimes with apical mucro).
blade spatulate to oblanceolate, 1–3 cm, margins entire, (apex usually obtuse).
loose, (elongated in fruit).
sepals linear-oblong, 4–7.5 mm;
petals spatulate, 6–11 mm.
(divaricate, slightly sigmoid or nearly straight), 6–12 mm.
(erect), didymous, suborbicular, inflated, (4–)6–15 × (4–)8–20 mm, (papery, basal and apical sinuses similar, basal rarely shallower, apical deep, narrow and closed or nearly so);
valves retaining seeds after dehiscence, pubescent, trichomes appressed;
replum oblong, constricted, 2–3.5 mm, narrower than fruit, apex obtuse;
ovules (2 or) 4 per ovary;
style 4–6(–9) mm.
(dark brown), flattened, (2–3 mm).
= 10, 16, 24.
Physaria acutifolia
Physaria acutifolia tends to be somewhat dwarfed, with a branched caudex and especially long styles (var. stylosa), where it grows at high elevations, especially at the western end of the Uinta Mountains in Utah. Intermediates form an uninterrupted cline and no infraspecific taxa are here recognized. In R. C. Rollins (1939), the discussion of P. acutifolia actually pertains to P. rollinsii. The discussion of P. australis pertains to what is now known as P. acutifolia. The plants are usually found in open soil patches, rarely into the subalpine or alpine tundra.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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