Difference between revisions of "Physocarpus capitatus"
Revis. Gen. Pl. 1: 219. 1891.
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|name=Spiraea capitata | |name=Spiraea capitata | ||
|authority=Pursh | |authority=Pursh | ||
| + | |rank=species | ||
|publication_title=Fl. Amer. Sept. | |publication_title=Fl. Amer. Sept. | ||
|publication_place=1: 342. 1813 | |publication_place=1: 342. 1813 | ||
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|name=Physocarpus opulifolius var. tomentellus | |name=Physocarpus opulifolius var. tomentellus | ||
|authority=(Seringe) B. Boivin | |authority=(Seringe) B. Boivin | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Neillieae;Physocarpus;Physocarpus capitatus | |hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Neillieae;Physocarpus;Physocarpus capitatus | ||
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name=Physocarpus capitatus | name=Physocarpus capitatus | ||
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|authority=(Pursh) Kuntze | |authority=(Pursh) Kuntze | ||
|rank=species | |rank=species | ||
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|publication year=1891 | |publication year=1891 | ||
|special status=Endemic | |special status=Endemic | ||
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|subfamily=Rosaceae subfam. Amygdaloideae | |subfamily=Rosaceae subfam. Amygdaloideae | ||
|tribe=Rosaceae tribe Neillieae | |tribe=Rosaceae tribe Neillieae | ||
Latest revision as of 22:57, 5 November 2020
Shrubs, to 45(–60) dm. Stems erect, sometimes suckering, angled, glabrous or finely stellate-hairy. Leaves: stipules linear to narrowly elliptic, 4 × 0.5–2 mm; petiole 1–2(–3) cm; blade broadly ovate to obovate, (3–)4–8 cm, usually as wide as long, base rounded to truncate or slightly cordate, 3- or 5-lobed, margins irregularly crenate to doubly serrate, apex obtuse to acute, abaxial surface paler, glabrous or more densely stellate-hairy, adaxial glabrous or sparsely stellate-hairy. Inflorescences 30–50-flowered, dense, hemispheric racemes, 3 cm diam., sometimes compound with some proximal pedicels becoming secondary peduncles; bracts narrowly elliptic to spatulate, 4 × 2 mm, apex acute or erose-dentate, faces glandular. Pedicels 1–1.5 cm, densely stellate-hairy. Flowers 5–8 mm diam.; hypanthium cup-shaped, 2 mm, densely stellate-hairy; sepals pale green to white, darker in center, triangular, 2–3 mm, apex gland-tipped, surfaces densely stellate-hairy; petals white, broadly elliptic to orbiculate, 3–4 × 3–4 mm; stamens equal to or exceeding petals; carpels 3–5, connate basally, mostly glabrous, sometimes hairy (on ventral suture). Follicles 3–5, connate basally, shiny brown, ovoid, 5–7 mm (lengths slightly exceeding sepals), glabrous; styles 2.5–3 mm. Seeds 2(–5), pyriform, 2.3–2.8 mm. 2n = 18.
Phenology: Flowering May–Jul; fruiting Jul–Aug.
Habitat: Open sunny slopes on clay (higher elevations), stream and swamp banks, lake margins in moist woods (lower elevations)
Elevation: 20–1300 m
Distribution
B.C., Alaska, Calif., Idaho, Oreg., Wash.
Discussion
Physocarpus capitatus is commonly cultivated.
Selected References
None.