Spiraea douglasii var. douglasii

IllustratedEndemic
Treatment appears in FNA Volume 9. Treatment on page 407.

Leaf abaxial surfaces whitish to grayish, lanate to tomentose. Inflorescence branches tomentose. Pedicels tomentose. Flowers: hypanthia and sepals tomentose.


Phenology: Flowering May–Aug; fruiting Jul–Nov.
Habitat: Stream banks, moist woodland margins, wet meadows, fens, swamps, roadsides
Elevation: 0–2500 m

Distribution

V9 684-distribution-map.jpg

B.C., Calif., Oreg., Wash., in Europe

Discussion

H. J. Scoggan (1978–1979, part 3) identified two forms of var. douglasii based upon petal color: forma alba J. K. Henry (white) and forma douglasii (pink to deep rose). See discussion under var. menziesii for information that may also apply to var. douglasii.

Selected References

None.

Lower Taxa

None.
whitish +  and grayish +
lanate +  and tomentose +
Richard Lis +
Hooker +
reddish +  and dark-brown gray or gray-black +
not +  and exfoliating +
compound +  and simple +
opposite +  and alternate +
cuneate +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
elliptic +  and obovate +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
? (?) +, ? (?) +  and ? (?) +
0.5cm +  and 4cm +
glabrate +  and tomentose +
B.C. +, Calif. +, Oreg. +, Wash. +  and in Europe +
not +  and aggregated +
0–2500 m +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
unisexual +  and bisexual +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
tomentose +  and glabrous +
list +  and count +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
coriaceous +
not +  and aggregated +
not +  and aggregated +
Stream banks, moist woodland margins, wet meadows, fens, swamps, roadsides +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +
(2-)3-1000+-flowered +
axillary +  and terminal +
crassinucellate +
compound +  and simple +
deciduous +
craspedodromous +
pinnate +  and serrate +
toothed +, unlobed +  and lobed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
racemiform +  and corymbiform +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
2-4 times diam branches +
8cm +  and 25cm +
glabrescent +  and tomentose +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering May–Aug +  and fruiting Jul–Nov. +
adnate +, free +, connate +  and distinct +
Fl. Bor.-Amer. +
not arillate +
fusiform;oblong +
2mm +  and 4mm +
deciduous +  and persistent +
free +  and distinct +
reflexed +, erect +, ascending +  and spreading +
1 cm10 mm <br />0.01 m <br /> (?) +
2 +  and 4 +
Illustrated +  and Endemic +
free +  and distinct +
2-3 times petal length +
shorter or longer +
nectariferous +
reddish-brown +  and brown +
decumbent +  and prostrate +
erect +  and ascending +
5 +  and 20 +
discoid +  and capitate +
deciduous +  and persistent +
distinct +
subterminal +  and terminal +
not elongate +
hairy +  and glabrous +
Spiraea douglasii var. douglasii +
Spiraea douglasii +
variety +
inconspicuous +
reduced +