Oclemena nemoralis (Aiton) Greene

Bog aster (en)

Species

Angiosperms > Asterales > Asteraceae > Oclemena

Characteristics

Plants 5–70(–90) cm (± loosely clonal, sometimes clustered; rhizomes subsuperficial, elongate, herbaceous or woody, slender, sometimes branched). Stems 1, erect, thin (1–2 mm diam.), straight, sparsely strigillose. Leaves 30–100+, crowded, proximal sometimes withering by flowering; sessile; blades linear to linear-lanceolate, 10–60 × 1–8 mm, bases rounded, margins recurved, appearing entire but remotely serrulate, scabrous, teeth minute, apices obtuse to acute, abaxial faces sparsely hispid, densely stipitate-glandular, adaxial scabrous; distal slightly reduced, rapidly becoming bracts in arrays. Heads 1–15+, usually borne singly, sometimes in loose corymbiform arrays, branches ascending, at acute angles with stems. Peduncles filiform, 3–7 cm, ± strigillose, eglandular; bracts 3–8, small, linear, scabrous. Involucres (5–)6–7.5 mm. Phyllaries lance-linear to linear, margins often pinkish distally, sparsely to moderately strigillose, sometimes sparsely glandular. Ray florets 13–25; corollas pale to deep pink, seldom white, 11–18 × 1.2–2.6 mm. Disc florets 20–35; corollas abruptly ampliate, 5–7.5 mm, glabrous; tubes shorter than or equal to tubular throats, glabrous, lobes erect, triangular, 0.5–1 mm. Cypselae tan, fusiform-obconic, ± compressed, 1.9–3 mm, ribs 5–8 (paler than bodies), faces sparsely strigillose or glabrous, gland-dotted; pappi of yellowish or pale salmon-colored bristles in 2(–3) series, ± equal to disc corollas (outer shorter and very sparse, innermost apically attenuate). 2n = 18.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.7
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses medicinal
Edible -
Therapeutic use Ear Medicine (root)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Oclemena nemoralis unspecified picture

Distribution

Oclemena nemoralis world distribution map, present in Canada, France, Saint Pierre and Miquelon, and United States of America

Conservation status

Oclemena nemoralis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:1131339-2
WFO ID wfo-0000072855
COL ID 48GSQ
BDTFX ID -
INPN ID 761905
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Eucephalus nemoralis Oclemena nemoralis Aster greenii Aster uniflorus Matricaria americana Eucephalus nemoralis Aster ledifolius Galatella nemoralis Aster nemoralis Aster nemoralis var. nemoralis Aster nemoralis f. nemoralis