Difference between revisions of "Erigeron flagellaris"
Mem. Amer. Acad. Arts, n. s. 4: 68. 1849.
FNA>Volume Importer |
FNA>Volume Importer |
||
Line 51: | Line 51: | ||
|publication year=1849 | |publication year=1849 | ||
|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/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V20_783.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron |
Revision as of 21:30, 16 December 2019
Biennuals or short-lived perennials, 3–15 cm; usually fibrous-rooted, sometimes taprooted, caudices lignescent, rarely branched. Stems first erect (greenish proximally; usually single, simple), then producing herbaceous, leafy, prostrate runners (usually with rooting plantlets at tips, populations often becoming clonal mats), strigose (often sparsely; hairs antrorsely appressed, consistent in orientation), sometimes slightly glandular distally. Leaves basal (often persistent) and cauline; basal blades broadly oblanceolate to elliptic, 20–55 × 3–9 mm, cauline abruptly reduced distally, margins entire or dentate, faces strigose, eglandular. Heads 1(–3, on proximal branches). Involucres 3–5 × 6–13 mm. Phyllaries in 2–3 series, strigose to loosely hirsute, minutely glandular. Ray florets 40–125; corollas white, often with an abaxial midstripe, often drying lilac, 4–10 mm, laminae not coiling or reflexing. Disc corollas 2–3.5 mm. Cypselae 0.8–1.3 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 10–17 bristles. 2n = 18, 27, 36, 45, 54.
Phenology: Flowering May–Aug(–Sep).
Habitat: Meadows and grassy slopes, often moist, open areas in grasslands, pinyon pine, oak-pine, pine, aspen, and spruce-fir
Elevation: (1700–)2100–3600 m
Distribution
![V20-783-distribution-map.gif](/w/images/f/fd/V20-783-distribution-map.gif)
Alta., B.C., Ariz., Calif., Colo., Idaho, Kans., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wyo., Mexico.
Discussion
Early season forms of Erigeron flagellaris may consist of a basal rosette and a single, erect, scapiform, monocephalous stem; leafy runners usually develop quickly. Many polyploids of this species are indistinguishable from diploids; some polyploids have features suggestive of genetic influence of E. tracyi.
Selected References
None.