Pyrola grandiflora

Radius

Pyrola & Chimaphila, 27, plate 3, fig. 2. 1821,.

Common names: Large-flower or arctic wintergreen pyrole à grandes fleurs
Synonyms: Pyrola grandiflora var. canadensis (Andres) A. E. Porsild Pyrola grandiflora var. gormanii (Rydberg) A. E. Porsild
Treatment appears in FNA Volume 8. Treatment on page 382. Mentioned on page 379, 383.

Plants rhizomatous, 0.5–1.9 (–2.5) dm. Leaves: petiole 10–65 (–80) mm, channeled adaxially, glabrous; blade not or, sometimes, maculate, dull and light green to purplish abaxially, shiny and dark green, sometimes with white tissue bordering larger veins adaxially, ovate to elliptic or round to subreniform, 9–33 (–45) × 10–50 mm, coriaceous, base truncate to rounded or cordate, margins subentire to crenate or crenate-serrulate, apex rounded to acute. Inflorescences 1 per stem, 4–12-flowered; peduncular bracts absent or 1–3, ovatelanceolate to ovate, 6–12 × (2–) 3–5 mm, chartaceous or membranous, margins entire; inflorescence bracts ovatelanceolate to ovate, longer than subtended pedicels, 4.5–10 × 1.8–3.4 mm, chartaceous. Pedicels 3–8 mm. Flowers: calyx lobes appressed or spreading in fruit, green, pinkish, or reddish with margins hyaline to white or pinkish, oblong-ovate to lanceolate, (2.2–) 2.8–6 × (0.9–) 1.2–2 mm, margins entire or erose-denticulate, apices obtuse to rounded; petals white, often suffused with pink, obovate to round, 6–10 (–11) × 4.2–6 mm, margins entire or erose-denticulate, especially distally; stamens 4–7.5 mm; filament base 0.2–0.3 mm wide; anthers 1.6–3 mm, apiculations absent or less than 0.1 mm, thecae creamy yellow to golden yellow, tubules yellow to yellowish-brown, 0.1–0.3 mm, scarcely narrowed above thecae, lateral walls touching for most of their lengths, pores 0.1–0.2 × 0.1–0.2 mm; ovary smooth; style scarcely exserted, 4.5–8 mm; stigma 0.7–1.1 mm wide, lobes erect. Capsules depressed-globose, 2.9–4 × 3.8–6 mm. 2n = 46, 69.


Phenology: Flowering Apr–Jun.
Habitat: Arctic and alpine tundra, heathlands, coniferous forests, boreal forests and woodlands
Elevation: 10-2000 m

Distribution

V8 722-distribution-map.gif

Greenland, Alta., B.C., Man., Nfld. and Labr. (Labr.), N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Eurasia

Discussion

A. E. Porsild (1939) recognized three varieties in Pyrola grandiflora (var. canadensis, var. gormanii, and var. grandiflora) differing subtly in leaf and floral morphology, floral fragrance, and habitat. Variation among these taxa appears to be essentially continuous. E. Haber (1972) referred them to synonymy [under P. rotundifolia subsp. grandiflora (Radius) Andres] without discussion. Hybrids between P. grandiflora and P. minor have been reported from western Greenland; they were discussed by T. W. Böcher (1961).

Selected References

None.

Lower Taxa

None.

"broad" is not a number.

... more about "Pyrola grandiflora"
0.16 cm1.6 mm <br />0.0016 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Obtuse (?) +  and Rounded (?) +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
Craig C. Freeman +
Radius +
truncate;rounded or cordate +
3.3 cm33 mm <br />0.033 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
dark green +, light green +  and purplish +
0.9 cm9 mm <br />0.009 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
shiny +  and dull +
ovate;elliptic or round +
coriaceous +
10mm;50mm +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spreading +  and appressed +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
depressed-globose +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
pseudoverticillate +, in basal rosettes +  and alternate +
Large-flower or arctic wintergreen +  and pyrole à grandes fleurs +
persistent +  and deciduous +
rotate to crateriform campanulate cylindric globose or urceolate +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. (Labr.) +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +  and Eurasia +
10-2000 m +
undifferentiated +
fusiform +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
nodding +  and spreading +
unisexual +  and bisexual +
loculicidal +
Arctic and alpine tundra, heathlands, coniferous forests, boreal forests and woodlands +
multicellular +
0.45 cm4.5 mm <br />0.0045 m <br /> (1 cm10 mm <br />0.01 m <br />) +
ovatelanceolate +  and ovate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
persistent +
scale-like +
reduced +
hyaline +  and white or pinkish +
erose-denticulate;entire;erose-denticulate;entire;subentire;crenate or crenate-serrulate +
parietal +, axile +  and placentation +
intruded-parietal +
tenuinucellate +  and unitegmic +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
ovatelanceolate +  and ovate +
membranous +  and chartaceous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
distinct +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
reduced +
not sticky +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
6.5 cm65 mm <br />0.065 m <br /> (8 cm80 mm <br />0.08 m <br />) +
channeled +
1 cm10 mm <br />0.01 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
Flowering Apr–Jun. +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Pyrola & Chimaphila, +
distinct +
fusiform +
peltate +  and capitate +
0.7mm;1.1mm +
straight +
expanded +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Pyrola grandiflora var. canadensis +  and Pyrola grandiflora var. gormanii +
Pyrola grandiflora +
species +
creamy yellow;golden yellow +
narrowed +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
evergreen +, deciduous +  and perennial +