Flora of North America species comparison

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Drymocallis micropetala

Drymocallis rhomboidea

Wasatch drymocallis or wood beauty

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

short to elongate.

short.
Stems

solitary or ± tufted, (2.5–)3–6 dm;

base 2–4 mm diam., septate-glandular.

± tufted, 1.7–4.7 dm;

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

moderately hairy;

basal (6–)10–24 cm, leaflet pairs 2–3;

terminal leaflet obovate, 2–5 × 1.5–4 cm, teeth double, (5–)8–12(–15) per side, apex obtuse;

cauline 1–3, 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

10–20(–30)-flowered, leafy, congested clusters terminating branches, 1/10–1/3(–1/2) of stem, narrow, branch angles 5–20°.

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

1–5 mm, predominantly short-hairy, often velutinous, sparsely to moderately 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 to oblanceolate-elliptic, 2–4(–6) × (0.5–)1–1.5 mm;

sepals spreading, 4–7(–9) mm, apex obtuse;

petals not overlapping, spreading, cream-white, obovate-elliptic, 2–5 × 1.5–3.5 mm, shorter than sepals;

filaments 1–2 mm, anthers 0.5–0.8 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

reddish, 1.3 mm.

light reddish brown, 1–1.2 mm.
2n

= 14.

Drymocallis micropetala

Drymocallis rhomboidea
Phenology Flowering May–Jul. Flowering Jun–Jul(–Aug).
Habitat Mountain brush in canyons, pinyon-juniper woodlands Dry slopes and outcrops in open forests
Elevation 1400–2600 m (4600–8500 ft) 1200–2500 m (3900–8200 ft)
Distribution
from FNA
UT
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Drymocallis micropetala is poorly known; it combines the aspect and narrow inflorescence of D. convallaria, the small petals of D. glandulosa, and the predominantly short-hairy pedicels of D. deseretica. Plants with equally small petals that occur sporadically throughout the range of D. convallaria are predominantly septate-glandular rather than short-hairy on the petioles and are not included here. As circumscribed here, D. micropetala occurs only in the Wasatch Range of north-central Utah, from Juab to Rich counties; it is possibly of conservation concern.

(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. 286. FNA vol. 9, p. 294.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis
Sibling taxa
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. 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. micropetala, Potentilla glandulosa subsp. micropetala, P. glandulosa var. micropetala Potentilla rhomboidea, D. glandulosa subsp. globosa, P. glandulosa subsp. globosa
Name authority Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 375. (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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