Fragaria virginiana subsp. platypetala

(Rydberg) Staudt

Canad. J. Bot. 40: 881. 1962.

Endemic
Basionym: Fragaria platypetala Rydberg Monogr. N. Amer. Potentilleae, 177. 1898
Synonyms: F. sibbaldifolia Rydberg F. suksdorfii Rydberg F. truncata Rydberg F. virginiana var. platypetala (Rydberg) H. M. Hall
Treatment appears in FNA Volume 9. Treatment on page 278. Mentioned on page 277.

Stolons usually densely spreading-hairy. Leaves: petiole usually densely spreading-hairy; leaflet blade usually bluish green, slightly glaucous, sometimes dull, terminal leaflets ovate-obovate to cuneate or truncate, sometimes slightly leathery, margins serrate or crenate only in distal 1/3, teeth: relative number 0.1–0.4. Peduncles and pedicels densely spreading-hairy. Flowers 15–18.6 mm diam. (pistillate), 16.3–26 mm diam. (bisexual and staminate). Fruits: bractlets clasping or slightly spreading. 2n = 56.


Phenology: Flowering spring.
Habitat: Moist to dry sites, prairies, savannas, open forests, roadsides, abandoned fields
Elevation: 0–3700 m

Distribution

V9 448-distribution-map.jpg

Alta., B.C., Yukon, Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.

Discussion

Plants of subsp. platypetala that are hypothesized to have resulted from a former introgression of subsp. glauca into Fragaria chiloensis on the Pacific coast have been grouped under subsp. platypetala. Plants growing away from coastal areas still show characteristics of F. chiloensis, such as having all stems densely spreading-hairy and relatively large hypanthia spreading or clasping the fruits.

Selected References

None.

Lower Taxa

None.

"thin" is not a number. "thick" is not a number."thin" is not a number.

yellowish green +  and reddish-brown +
superficial +
ovoid +  and ovate +
1.2mm +  and 1.8mm +
pointed +
Günter Staudt† +
(Rydberg) Staudt +
Fragaria platypetala +
ovate +, shallowly deltate +  and widely ovate or widely depressed +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
free +  and distinct +
Alta. +, B.C. +, Yukon +, Calif. +, Colo. +, Idaho +, Mont. +, Oreg. +, Utah +, Wash. +  and Wyo. +
not +  and aggregated +
0–3700 m +
1.63 cm16.3 mm <br />0.0163 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
Moist to dry sites, prairies, savannas, open forests, roadsides, abandoned fields +
0.95 cm9.5 mm <br />0.0095 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
saucer--shaped +
crassinucellate +
opposite +  and alternate +
bright green +, usually green +  and bluish green +
deciduous +
leathery +
rhombic +  and roundish +
pinnate +  and entire +
crenate +  and serrate +
inferior +  and superior +
clustered +, biseriate +  and superposed +
spreading-hairy +
spreading-hairy +
5 (?) +  and 9 (?) +
pink +  and white +
free +  and distinct +
obovate;widely obovate +
spreading-hairy +
Flowering spring. +
adnate +, free +, connate +  and distinct +
Canad. J. Bot. +
not arillate +
persistent +
free +  and distinct +
reflexed +  and spreading +
lanceolate +
free +  and distinct +
1 +  and 10 +
palmate +  and pinnate +
lanceolate +
spreading-hairy +
deciduous +
distinct +
not elongate +
F. sibbaldifolia +, F. suksdorfii +, F. truncata +  and F. virginiana var. platypetala +
Fragaria virginiana subsp. platypetala +
Fragaria virginiana +
subspecies +
ovate-obovate +  and cuneate or truncate +
0.1 (?) +  and 0.4 (?) +
2.4 cm24 mm <br />0.024 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
white +, carmine +, wine red +  and red +
inconspicuous +
subglobose +  and oblong conic or oblate +
enlarged +
0.9 cm9 mm <br />0.009 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
stoloniferous +, short-rhizomatous +  and acaulescent +
unisexual +  and hermaphroditic +