Spiraea tomentosa var. tomentosa
WeedyIllustratedEndemic
Synonyms: Spiraea glomerata Rafinesque S. parvifolia Rafinesque
Treatment appears in FNA Volume 9. Treatment on page 403.
Inflorescences 300–15,000+-flowered, flowers or fruits 12–20 per cm of branches. Pedicels 0.1–0.5 mm. 2n = 36.
Phenology: Flowering Jul–Sep; fruiting Aug–Oct.
Habitat: Wetlands, woodland borders with moist acidic soil
Elevation: 0–400 m
Distribution
N.B., N.S., Ont., P.E.I., Que., Conn., Del., Maine, Md., Mass., N.H., N.J., N.Y., Pa., R.I., Vt., Va., W.Va., in n, c Europe
Discussion
Forms with white petals have been identified as forma albiflora Macbride; plants with rose petals are assigned to forma tomentosa. The chromosome count of 2n = 36 by J. T. Baldwin (1951) was for forma albiflora.
Selected References
None.
Lower Taxa
None.
... more about "Spiraea tomentosa var. tomentosa"
tomentose +
aggregated +
perigynous +
dehiscent +
rounded;acute +
cuneate +
elliptic +
bicolorous +
ovatelanceolate +
coriaceous +
absent +
absent +
tomentose +
free +
simple +
alternate +
dimorphic +
aggregated +
absent +
000+-flowered +
aggregated +
cymbiform +
000+-flowered +
12;20 +
coriaceous +
fascicles +
persistent +
hemispheric +
Present +
(2-)3-1000+-flowered +
narrow +
crassinucellate +
alternate +
deciduous +
craspedodromous +
pinnate +
absent +
aggregated +
clustered +
conic +
varying +
absent +
tomentose +
perigynous +
elliptic +
ovate;orbiculate +
absent +
1;250 +
Sp. Pl. +
1753 +
prominent +
not arillate +
2;4 +
fusiform;oblong +
triangular +
absent +
shorter +
1 times petal length +
shorter or longer +
15;20 +
nectariferous +
absent +
reduced +
branched +
young +
villous;glabrous +
palmate +
pinnate +
absent +
distinct +
terminal +
not elongate +
Spiraea tomentosa var. tomentosa +
Spiraea tomentosa +
variety +
developed +
absent +
inconspicuous +
reduced +
rhizomatous +
perennial +