Flora of North America species comparison

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Drymocallis arizonica

Drymocallis rhomboidea

Arizona drymocallis or wood beauty

common cinquefoil, globose drymocallis, rhomboid sticky cinquefoil, Siskiyou drymocallis, Siskiyou or globose drymocallis or wood beauty
Caudex branches

short.

short.
Stems

± tufted, (1.5–)2.5–6 dm;

base 1.5–2.5 mm diam., sparsely to densely septate-glandular.

± tufted, 1.7–4.7 dm;

base 1–3 mm diam., usually not septate-glandular.
Leaves

sparsely to moderately hairy;

basal 5–22 cm, leaflet pairs (2–)3–4(–5);

terminal leaflet broadly obovate-elliptic, 1–5 × 1–2.5(–4) cm, teeth double, 6–18 per side, apex rounded to acute;

cauline 1–4, well developed, leaflet pairs 2–3.

moderately to densely hairy;

basal 5–12 cm, leaflet pairs 3;

terminal leaflet obovate-elliptic, 1–2.5(–3) × 1–2(–2.5) cm, teeth single or double, 6–10 per side, apex obtuse to rounded;

cauline 0–2, developed or reduced, leaflet pairs 2–3.
Inflorescences

5–30-flowered, not notably leafy, compact, 1/10–1/4(–1/2) of stem, narrow, branch angles 5–25°.

5–35-flowered, ± leafy, usually ± open, 1/3–2/3 of stem, wide, branch angles 15–60°.
Pedicels

1–10 (proximal to 20) mm, sparsely to ± densely short-hairy, predominantly septate-glandular.

1–5 (proximal to 15) mm, predominantly short-hairy, usually not or sparsely, sometimes moderately, septate-glandular.
Flowers

opening widely;

epicalyx bractlets linear-lanceolate to narrowly elliptic, 2–4(–7) × 1–2 mm;

sepals spreading, 4–6(–11) mm, apex ± acute;

petals not or scarcely overlapping, spreading, cream-white, ± obovate, 3–6 × 2.5–5 mm, shorter than or equal to sepals;

filaments 1–3 mm, anthers 0.7–1 mm;

styles thickened, 1 mm.

opening narrowly;

epicalyx bractlets linear-oblanceolate, 2–3.5 × 1 mm;

sepals ± erect, 4–6(–8) mm, apex obtuse;

petals not overlapping, ± erect, cream-white, usually narrowly obovate, sometimes oblanceolate, 3–5 × 2–3 mm, usually ± shorter than sepals;

filaments 1.5–3 mm, anthers 0.6–1 mm;

styles slender, 1.5–2.5 mm.
Achenes

light brown, 1 mm.

light reddish brown, 1–1.2 mm.
2n

= 14.

= 14.

Drymocallis arizonica

Drymocallis rhomboidea
Phenology Flowering May–Jul. Flowering Jun–Jul(–Aug).
Habitat Streamsides, rocky sites, open forest floors, pine and aspen forests Dry slopes and outcrops in open forests
Elevation 1800–3200 m (5900–10500 ft) 1200–2500 m (3900–8200 ft)
Distribution
from FNA
AZ; UT
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Drymocallis arizonica encompasses populations in Arizona north of the Mogollon Rim and in Utah as far north as Garfield and Sevier counties, including the Henry Mountains. It is most distinctive in northern Arizona, where plants commonly have basal leaves with four pairs of lateral leaflets and compact inflorescences. The species intergrades with D. convallaria but is in general shorter and more likely multistemmed. It also shares similarities with D. pseudorupestris but has more developed cauline leaves and a more compact inflorescence. The intergrade zone between all three species and D. deseretica in southwestern Utah is particularly problematic and perhaps indicative of yet additional taxa deserving recognition.

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

Drymocallis rhomboidea is centered in the Siskiyou Mountains. It differs from D. campanulata in its smaller, cream-white petals and globular flowers; in addition, the vestiture is usually predominantly short-hairy, except in scattered California populations. Plants from Mount Ashland, the type locality, tend to have more congested, leafier inflorescences than plants found elsewhere in the range.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 9, p. 284. FNA vol. 9, p. 294.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis
Sibling taxa
D. arguta, D. ashlandica, D. campanulata, D. convallaria, D. cuneifolia, D. deseretica, D. fissa, D. glabrata, D. glandulosa, D. hansenii, D. lactea, D. micropetala, D. pseudorupestris, D. rhomboidea
D. arguta, D. arizonica, D. ashlandica, D. campanulata, D. convallaria, D. cuneifolia, D. deseretica, D. fissa, D. glabrata, D. glandulosa, D. hansenii, D. lactea, D. micropetala, D. pseudorupestris
Synonyms D. glandulosa subsp. arizonica, Potentilla glandulosa subsp. arizonica, P. macdougalii Potentilla rhomboidea, D. glandulosa subsp. globosa, P. glandulosa subsp. globosa
Name authority Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 373. (1908) (Rydberg) Rydberg: Monogr. N. Amer. Potentilleae, 203. (1898)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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