Flora of North America species comparison

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Drymocallis cuneifolia

Drymocallis cuneifolia var. cuneifolia
Photo is of parent taxon

wedgeleaf woodbeauty
Caudex branches

elongate.

Stems

openly tufted to loosely spaced, 0.5–4.5 dm;

base 1–2 mm diam., sparsely septate-glandular.

2–4.5 dm.
Leaves

sparsely to moderately hairy;

basal 2–15 cm, leaflet pairs (2–)3–5;

terminal leaflet broadly cuneate to nearly round, 0.6–2(–3.5) × 0.5–2 cm, teeth irregularly single, 2–4 per side, apex rounded to truncate;

cauline 0–1(–2), reduced, leaflet pairs 1–2.

Basal leaves

5–15 cm, leaflet pairs (2–)3–4(–5);

terminal leaflet broadly cuneate-flabellate, 1–2.5(–3.5) cm.
Inflorescences

3–10(–15)-flowered, not leafy, open, 1/4–3/4 of stem, wide, branch angles 20–75°.

Pedicels

2–15 (proximal to 30) mm, sparsely to moderately short-hairy, septate-glandular.

Flowers

opening narrowly;

epicalyx bractlets linear to narrowly elliptic or lanceolate, 1–2 × 0.5 mm;

sepals erect, 2–5 mm, apex broadly obtuse;

petals scarcely overlapping, erect, yellow, narrowly obovate, 2–4 × 1.5–2.5 mm, ± equal to or slightly longer than sepals;

filaments 1.5–2.5 mm, anthers 0.5–0.8 mm;

styles slender, 1.5–2.5 mm.

Achenes

brown, 0.8–1.2 mm.

1–1.2 mm.
Epicalyx

bractlets linear to narrowly elliptic, 0.8–2 × 0.3–0.5 mm.

Drymocallis cuneifolia

Drymocallis cuneifolia var. cuneifolia
Phenology Flowering Jun–Aug(–Sep).
Habitat Stream edges in riparian scrub
Elevation 1800–2300 m (5900–7500 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Drymocallis cuneifolia has a complex nomenclatural history, complicated by the extreme rarity of the typical variety. Rydberg described the species on the basis of a single collection from the San Bernardino Mountains of San Bernardino County, probably near Green Lead Mines. When comparable (though significantly smaller) plants were found in the San Gabriel Mountains of Los Angeles County, P. A. Munz and I. M. Johnston (1925) adopted Potentilla cuneifolia (Rydberg) Th. Wolf for both extremes; this name was later replaced with P. peirsonii because of the earlier P. cuneifolia Bertoloni. In the absence of comparable new collections from the San Bernardino Mountains, D. D. Keck (in J. Clausen et al. 1940) concluded that the type of D. cuneifolia was merely an immature specimen of D. lactea var. lactea and accordingly described P. glandulosa subsp. ewanii to accommodate populations in the San Gabriel Mountains.

The 2004 discovery of a small population of plants comparable to the type of Drymocallis cuneifolia from near the type locality (Elvin 3555, IRVC, UCR) confirms that D. cuneifolia is a valid taxon that shares most of the diagnostic features of populations in the San Gabriel Mountains. Plants in the San Bernardino Mountains tend to be larger than those in the San Gabriel Mountains, with fewer and somewhat differently shaped leaflets; they are accordingly treated here as varieties.

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

Of conservation concern.

Variety cuneifolia is currently known from only two populations on the north face of the San Bernardino Mountains, San Bernardino County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Stems 2–4.5 dm; basal leaves 5–15 cm; San Bernardino Mountains.
var. cuneifolia
1. Stems 0.5–2(–2.5) dm; basal leaves 2–10 cm; San Gabriel Mountains.
var. ewanii
Source FNA vol. 9, p. 294. FNA vol. 9, p. 295.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis Rosaceae > subfam. Rosoideae > tribe Potentilleae > Drymocallis > Drymocallis cuneifolia
Sibling taxa
D. arguta, D. arizonica, D. ashlandica, D. campanulata, D. convallaria, D. deseretica, D. fissa, D. glabrata, D. glandulosa, D. hansenii, D. lactea, D. micropetala, D. pseudorupestris, D. rhomboidea
D. cuneifolia var. ewanii
Subordinate taxa
D. cuneifolia var. cuneifolia, D. cuneifolia var. ewanii
Synonyms Potentilla peirsonii
Name authority Rydberg: Monogr. N. Amer. Potentilleae, 204, plate 111 [as cuneata]. (1898) unknown
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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