Erigeron hyssopifolius

Michaux

Fl. Bor.-Amer. 2: 123. 1803.

Common names: Hyssop-leaf fleabane vergerette à feuilles d’hysope
IllustratedEndemic
Synonyms: Erigeron hyssopifolius var. anticostensis Victorin & J. Rousseau Erigeron hyssopifolius var. villicaulis Fernald
Treatment appears in FNA Volume 20. Treatment on page 277. Mentioned on page 259, 266.

Perennials, 5–35 cm; rhizomatous, fibrous-rooted, caudices sometimes branched. Stems erect, sparsely and loosely strigose to strigoso-villous, eglandular. Leaves: basal and proximal cauline much reduced or present as scales; cauline blades linear to linear-oblong or oblong-lanceolate, 10–30 × 1–5 mm, largest at midstem, then relatively even-sized to peduncles, margins entire, sometimes prominently ciliate, faces glabrous or sparsely villous. Heads 1 (–5). Involucres 4–6 × 6–12 mm. Phyllaries in 2–3 series, loosely and sparsely strigose, eglandular. Ray-florets 20–50; corollas white, less commonly pinkish, or aging pinkish, 4–8 mm, laminae not coiling or reflexing. Disc corollas 3–4.6 mm. Cypselae 1.3–1.6 mm, 5–6-nerved, faces glabrous; pappi: outer of setae, inner of 25–35 bristles. 2n = 18.


Phenology: Flowering Jun–Aug.
Habitat: Open woods, river gravel, rock ledges and crevices, gravel barrens, roadsides
Elevation: 0–500 m

Distribution

V20-560-distribution-map.gif

Alta., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Nunavut, Ont., Que., Sask., Yukon, Maine, Mich., N.H., N.Y., Vt.

Discussion

Variety villicaulis, from Anticosti Island (Quebec) and Newfoundland, has been distinguished on the basis of its relatively shorter stature (mostly 3–15 cm) and greater ratio of peduncle to leafy-stem lengths (stems and peduncles as long as or longer than the leafy parts of stems); the distinction appears to be arbitrary.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron hyssopifolius"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +, corymbiform +  and loose +
indeterminate +  and determinate +
Guy L. Nesom +
Michaux +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
linear +  and linear-oblong or oblong-lanceolate +
Hyssop-leaf fleabane +  and vergerette à feuilles d’hysope +
not 2-lipped +  and actinomorphic +
pinkish +, aging +  and white +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.3 cm3 mm <br />0.003 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
fertile +  and bisexual +
Alta. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, N.S. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Maine +, Mich. +, N.H. +, N.Y. +  and Vt. +
0–500 m +
glabrous +  and villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open woods, river gravel, rock ledges and crevices, gravel barrens, roadsides +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
turbinate;hemispheric +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
not coiling +
petiolate +  and sessile +
cauline +, proximal +  and basal +
reduced +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
equal-sized +
2-carpellate +
Flowering Jun–Aug. +
narrowly elliptic +  and linear-lanceolate +
Fl. Bor.-Amer. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron hyssopifolius var. anticostensis +  and Erigeron hyssopifolius var. villicaulis +
Erigeron hyssopifolius +
Erigeron +
species +
inflated +  and tubular +
fibrous-rooted +  and rhizomatous +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
5 cm50 mm <br />0.05 m <br /> (35 cm350 mm <br />0.35 m <br />) +
tree +, shrub +  and subshrub +