Drymocallis convallaria

(Rydberg) Rydberg

Monogr. N. Amer. Potentilleae, 193. 1898.

Common names: Cordilleran drymocallis or wood beauty
Endemic
Basionym: Potentilla convallaria Rydberg Bull. Torrey Bot. Club 24: 249, plate 306. 1897
Synonyms: Drymocallis arguta subsp. convallaria (Rydberg) Soják P. arguta subsp. convallaria (Rydberg) D. D. Keck P. arguta var. convallaria (Rydberg) Th. Wolf
Treatment appears in FNA Volume 9. Treatment on page 286. Mentioned on page 282, 283, 284, 285, 287.

Caudex branches short. Stems usually solitary, sometimes tufted, 4–9 (–10) dm; base 2–5 mm diam., ± densely septate-glandular. Leaves sparsely to moderately, rarely densely, hairy; basal (10–) 15–25 (–30) cm, leaflet pairs (2–) 3–4; terminal leaflet usually obovate, sometimes elliptic, 3–5 (–6) × 1.5–4.5 cm, teeth double, 9–16 per side, apex rounded-obtuse; cauline (1–) 2–4, well developed at least proximally, leaflet pairs usually 3. Inflorescences (5–) 10–40-flowered, not leafy, congested to open, (1/8–) 1/6–1/3 (–1/2) of stem, narrow, branch angles 5–20°. Pedicels 1–5 (proximal to 25) mm, sparsely to ± densely short-hairy, predominantly septate-glandular. Flowers opening ± widely; epicalyx bractlets narrowly elliptic, (2–) 4–6 × 0.7–1.5 mm; sepals ± spreading, (4–) 5–8 (–10) mm, apex acute; petals not or scarcely overlapping, ± spreading, cream-white to pale-yellow, obovate-elliptic, sometimes broadly so, (3–) 5–8 × (2–) 4–6 mm, ± equal to sepals; filaments 1.5–2.5 mm, anthers 0.7–1 mm; styles thickened, 0.8 mm. Achenes light-brown, 1 mm.


Phenology: Flowering (May–)Jun–Aug.
Habitat: Dry to seasonally moist meadows, open forests, sagebrush and grassy rocky slopes
Elevation: 100–3000 m

Distribution

V9 458-distribution-map.jpg

Alta., B.C., Yukon, Alaska, Ariz., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Drymocallis convallaria is widespread in western North America, occurring mostly west of the Continental Divide from south-central Alaska to Arizona. It differs from most sympatric species in usually having a single thick stem, a narrow inflorescence, and cream-white to pale yellow petals, at most only slightly longer than the sepals.

Some collections from southern Idaho and northern Nevada that have very small petals in the size range of Drymocallis micropetala are included here on the basis of glandular pedicels. Excluded here are comparably small-petaled plants from the Warner Mountains of California and Oregon that have the aspect of D. convallaria but the blunter, redder achenes of D. glandulosa. Populations in northern Idaho and adjacent Washington that approach D. arguta in size and vestiture are provisionally treated as D. convallaria on the basis of leaflet shape. Specimens from New Mexico previously assigned to this taxon have largely been redetermined to D. arguta in the strict sense. See also discussions of Potentilla fissa var. major under 1. D. fissa, and of D. valida under the genus discussion. The illegitimate names P. glutinosa Nuttall ex Rydberg and D. glutinosa Rydberg have been applied most often to D. convallaria.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Drymocallis convallaria"
light-brown +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Barbara Ertter +
(Rydberg) Rydberg +
compound +  and simple +
opposite +  and alternate +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Potentilla convallaria +
oblanceolate-oblong +
1 cm10 mm <br />0.01 m <br /> (25 cm250 mm <br />0.25 m <br />) +
reduced +
free +  and distinct +
Cordilleran drymocallis or wood beauty +
Alta. +, B.C. +, Yukon +, Alaska +, Ariz. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
not +  and aggregated +
100–3000 m +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Dry to seasonally moist meadows, open forests, sagebrush and grassy rocky slopes +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
congested +  and open +
1/8 +  and 1/6-1/3-1/2 +
crassinucellate +
opposite +  and alternate +
marcescent +
winter-persistent +
overlapping +  and not confluent +
elliptic-ovate +  and flabellate or rhombic +
toothed +, or +, flat +, entire +  and more or less toothed +
inferior +  and superior +
clustered +, biseriate +  and superposed +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
overlapping +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0 (?) +  and 4 (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering (May–)Jun–Aug. +
adnate +, free +, connate +  and distinct +
Monogr. N. Amer. Potentilleae, +
not arillate +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
persistent +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
free +  and distinct +
branched +  and simple +
stramineous +, reddish +  and green +
1 +  and 20 +
palmate +  and pinnate +
deciduous +
distinct +
fusiform +
0.8 cm8 mm <br />0.008 m <br /> (?) +
Drymocallis arguta subsp. convallaria +, P. arguta subsp. convallaria +  and P. arguta var. convallaria +
Drymocallis convallaria +
Drymocallis +
species +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
horseshoe--shaped +
9 +  and 16 +
inconspicuous +
hemispheric +  and conic +
enlarged +
peglike-glandular +  and septate-glandular +