Chamaenerion angustifolium subsp. circumvagum

(Mosquin) Moldenke

Phytologia 27: 289. 1973.

Basionym: Epilobium angustifolium subsp. circumvagum Mosquin Brittonia 18: 169. 1966
Synonyms: C. angustifolium var. abbreviatum Lunell C. angustifolium var. canescens (Alph. Wood) Britton C. angustifolium subsp. macrophyllum (Haussknecht) Czerepanov C. danielsii (D. Löve) Czerepanov C. exaltatum Rydberg Chamerion angustifolium var. canescens (Alph. Wood) N. H. Holmgren & P. K. Holmgren C. angustifolium subsp. circumvagum (Mosquin) Hoch C. danielsii (D. Löve) Czerepanov C. platyphyllum (Daniels) Á. Löve & D. Löve E. angustifolium var. abbreviatum (Lunell) Munz E. angustifolium var. canescens Alph. Wood E. angustifolium subsp. macrophyllum (Haussknecht) Hultén E. angustifolium var. macrophyllum (Haussknecht) Fernald E. angustifolium var. platyphyllum (Daniels) Fernald E. danielsii D. Löve Pyrogennema angustifolium var. abbreviatum (Lunell) Lunell
Treatment appears in FNA Volume 10.

Stems 30–200 cm, sparsely strigillose, usually glabrous proximally. Leaves: petioles 2–7 mm; cauline blades oblong to elliptic-lanceolate, (6–) 9–23 × (0.7–) 1.5–3.4 cm, base subcuneate to attenuate, margins ± denticulate, surface strigillose on adaxial side and on abaxial midrib, or, rarely, glabrous. Inflorescences strigillose; bracts 7–25 mm. Flowers: sepals 9–19 × 1.5–3 mm, acuminate; petals obovate to suborbicular, 14–25 × 7–14 mm, entire or scarcely emarginate; filaments 8–17 mm; anthers 2.5–3 mm; pollen mixed 3-porate and 4-porate (rarely 5-porate), 70–95 µm diam.; ovaries 8–25 mm, style 9–18 mm. Capsules 5–9.5 cm; pedicels 1–3 cm. Seeds 1–1.3 × 0.3–0.4 mm. 2n = 72, 108.


Phenology: Flowering Jun–Sep.
Habitat: Moist, often disturbed places in montane and boreal forest regions, frequent after fires.
Elevation: 0–3800 m.

Distribution

St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Ark., Calif., Colo., Conn., Del., Idaho, Ill., Ind., Iowa, Maine, Md., Mass., Mich., Minn., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico (Coahuila), Mexico (Nuevo León), Eurasia

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

red +  and rose-purple +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
emarginate +  and entire +
glabrous +  and canescent +
attenuate +, acuminate +  and attenuate-acute +
Peter C. Hoch +
(Mosquin) Moldenke +
subcuneate +  and attenuate +
Epilobium angustifolium subsp. circumvagum +
indehiscent +  and loculicidal +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (23 cm230 mm <br />0.23 m <br />) +
below-ground +
lobed +, toothed +  and entire +
lanceolate +  and linear or proximally oblong +
0.3 cm3 mm <br />0.003 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
reduced +
0.7 cm7 mm <br />0.007 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
oblong +  and oblanceoloid +
0.3 cm3 mm <br />0.003 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
spreading +  and erect +
appressed-canescent +
terete +  and quadrangular +
5 cm50 mm <br />0.05 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
9 cm90 mm <br />0.09 m <br /> (23 cm230 mm <br />0.23 m <br />) +
oblong +  and elliptic-lanceolate +
1.5 cm15 mm <br />0.015 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
dingy +  and white +
persistent +
detached +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
ovate +, usually linear +  and lanceolate or elliptic +
subcoriaceous +
St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, Idaho +, Ill. +, Ind. +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.Dak. +, Tenn. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Mexico (Coahuila) +, Mexico (Nuevo León) +  and Eurasia +
0–3800 m. +
deflexed +  and erect +
basifixed +  and versatile +
0.8 cm8 mm <br />0.008 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
erect +  and nodding +
protandrous +  and bisexual +
loculicidal +
spreading +  and erect +
terete +  and quadrangular +
slender +
Moist, often disturbed places in montane and boreal forest regions, frequent after fires. +
perennial +
suffrutescent +
5 cm50 mm <br />0.05 m <br /> (50 cm500 mm <br />0.5 m <br />) +
subopposite +  and arranged +
deciduous +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
denticulate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
numerous +  and 1 +
multicellular +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
emarginate +  and entire +
white +, usually rose-purple +  and pale-pink +
14mm +  and 25mm +
18 +, 15 +, 11 +, 10 +  and 7 +
obovate +  and suborbicular +
0.7 cm7 mm <br />0.007 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering Jun–Sep. +
4-porate +  and 3-porate +
bluish gray +
3(-5)-aperturate +
triangular-ovate +  and lanceolate +
coriaceous +  and submembranous +
basal +  and cauline +
clavate +  and globose +
gray-brown +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
18 +, 200 +  and 500 +
sculptured +  and smooth +
narrowly obovoid +  and oblong +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
purplish green +
deciduous +
4 +  and 2 +
acuminate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
parenchymatous +
parietal +, axile +  and placentation +
aquatic +, amphibious +  and terrestrial +
subequal +
2 times as many as sepals +
branched +  and unbranched +
prostrate +  and decumbent +
glabrous +  and strigillose +
30 cm300 mm <br />0.3 m <br /> (200 cm2,000 mm <br />2 m <br />) +
subsessile +  and petiolate +
intrapetiolar +
flushed pink +  and white +
erect +  and deflexed +
0.9 cm9 mm <br />0.009 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
aquatic +, amphibious +  and terrestrial +
glabrous +  and strigillose +
dry-papillose +
C. angustifolium var. abbreviatum +, C. angustifolium var. canescens +, C. angustifolium subsp. macrophyllum +, C. danielsii +, C. exaltatum +, Chamerion angustifolium var. canescens +, C. angustifolium subsp. circumvagum +, C. platyphyllum +, E. angustifolium var. abbreviatum +, E. angustifolium var. canescens +, E. angustifolium subsp. macrophyllum +, E. angustifolium var. macrophyllum +, E. angustifolium var. platyphyllum +, E. danielsii +  and Pyrogennema angustifolium var. abbreviatum +
Chamaenerion angustifolium subsp. circumvagum +
Chamaenerion angustifolium +
subspecies +
3(-5)-aperturate +