Flora of North America species comparison

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Drymocallis ashlandica

Ashland cinquefoil, Mazama drymocallis or wood beauty
Caudex branches

short.
Stems

tufted, (1–)2–5 dm;

base 2–3 mm diam., ± densely septate-glandular.
Leaves

moderately to ± densely hairy;

basal 6–16 cm, leaflet pairs 2–3(–4);

terminal leaflet broadly obovate, 1.5–4 × 1–3 cm, teeth ± double, 7–12 per side, apex rounded;

cauline 0–2, moderately developed, leaflet pairs 2–3.
Inflorescences

5–15(–20)-flowered, not leafy, congested to deeply branched, 1/10–2/3 or less of stem, usually narrow, rarely ± wide, branch angles (5–)10–20(–30)°.
Pedicels

2–10 (proximal to 30) mm, sparsely to moderately short-hairy, predominantly septate-glandular, often obscuring other vestiture.
Flowers

opening widely;

epicalyx bractlets linear to broadly elliptic, 3–5 × 1–2 mm;

sepals spreading, 5–7(–9) mm, apex acute;

petals overlapping, spreading, light yellow, broadly obovate, 5–9 × 4–7 mm, equal to or longer than sepals;

filaments 1.5–5 mm, anthers 0.7–1.2 mm;

styles ± thickened, 1 mm.
Achenes

light brown, 1 mm.

Drymocallis ashlandica
Phenology Flowering Jun–Aug.
Habitat Meadows, roadsides, sandy shorelines
Elevation 500–2000 m (1600–6600 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
Discussion

The name Potentilla glandulosa subsp. ashlandica was misapplied to Drymocallis lactea var. austiniae (B. Ertter 1993); as circumscribed here, D. ashlandica is a poorly known species restricted to the Cascade and Siskiyou ranges of southwestern Oregon. It very likely also occurs in adjacent California; no collections from there are known. Drymocallis ashlandica differs from most sympatric populations of D. lactea var. austiniae and resembles D. pseudorupestris in its densely glandular inflorescences, which tend to be more densely congested and/or narrower than those of the other two species.

Drymocallis ashlandica was described by Greene as Potentilla ashlandica, and by Howell as P. ciliata (a later homonym), both based on a collection by Howell from the Siskiyou Mountains near Ashland, Oregon. The circumscription here, which matches that of D. D. Keck (in J. Clausen et al. 1940) and M. E. Peck (1961), encompasses populations from near Oregon Caves and Ashland in the Siskiyou Mountains to near McKenzie Bridge, Lane County, and Sparks Lake, Deschutes County. It is currently known from relatively few collections, mostly from the Crater Lake area, and may prove to be of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 9, p. 288.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis
Sibling taxa
D. arguta, D. arizonica, D. campanulata, D. convallaria, D. cuneifolia, D. deseretica, D. fissa, D. glabrata, D. glandulosa, D. hansenii, D. lactea, D. micropetala, D. pseudorupestris, D. rhomboidea
Synonyms Potentilla ashlandica, D. glandulosa subsp. ashlandica, P. glandulosa subsp. ashlandica
Name authority (Greene) Rydberg: Monogr. N. Amer. Potentilleae, 200. (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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