Difference between revisions of "Symphyotrichum laurentianum"
Phytologia 77: 286. 1995.
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|name=Aster laurentianus var. contiguus | |name=Aster laurentianus var. contiguus | ||
|authority=Fernald | |authority=Fernald | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Aster laurentianus var. magdalenensis | |name=Aster laurentianus var. magdalenensis | ||
|authority=Fernald | |authority=Fernald | ||
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|distribution=N.B.;P.E.I.;Que. | |distribution=N.B.;P.E.I.;Que. | ||
|discussion=<p>Of conservation concern.</p><!-- | |discussion=<p>Of conservation concern.</p><!-- | ||
− | --><p>Symphyotrichum laurentianum is known only from the southern shores of the Gulf of St. Lawrence.</p> | + | --><p><i>Symphyotrichum laurentianum</i> is known only from the southern shores of the Gulf of St. Lawrence.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1995 | |publication year=1995 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_1121.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Symphyotrichum | |genus=Symphyotrichum |
Revision as of 16:17, 18 September 2019
Annuals, 1–13+ cm. Stems 1, decumbent to erect (straight), glabrous. Leaves ± fleshy, margins entire, eciliate, apices obtuse, faces glabrous; basal deciduous at bolting, petiolate, blades oblanceolate 44–50 × 5–7 mm [cult.], bases attenuate; proximal cauline and some distal withering by flowering; cauline sessile, blades linear-lanceolate to spatulate, 15–55 × 1–4 mm, reduced distally, bases cuneate; distal sessile, blades linear-lanceolate to spatulate. Heads (disciform) in ± densely paniculiform arrays. Peduncles glabrous, bracts linear. Involucres campanulate, 5–8+mm. Phyllaries in 3–4 series, lanceolate, subequal, bases scarious, margins eciliate, green zones foliaceous (outer), apices obtuse, faces glabrous. Ray florets 0. Pistillate florets 14–47+ in 2–3+ series; laminae 0 (corolla tubes 2–2.4 mm, shorter than style branches). Disc florets 5–8+; corollas yellow, 3.1–3.9 mm, lobes deltate to triangular, 0.2–0.3 mm. Cypselae purple, obovoid, ± compressed, 2.8–2.9 mm, 2–4-nerved, faces strigillose; pappi white to yellowish white, 4.8–5.2 mm. 2n = 14.
Phenology: Flowering Aug–Sep.
Habitat: Brackish sand and mud, intertidal salt marshes, moist dune slacks
Elevation: 0 m
Distribution
N.B., P.E.I., Que.
Discussion
Of conservation concern.
Symphyotrichum laurentianum is known only from the southern shores of the Gulf of St. Lawrence.
Selected References
None.