Difference between revisions of "Erigeron aphanactis"
Fl. Francisc., 389. 1897.
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|name=Erigeron concinnus var. aphanactis | |name=Erigeron concinnus var. aphanactis | ||
|authority=A. Gray | |authority=A. Gray | ||
+ | |rank=variety | ||
|publication_title=Proc. Amer. Acad. Arts | |publication_title=Proc. Amer. Acad. Arts | ||
|publication_place=6: 540. 1865 (as concinnum) | |publication_place=6: 540. 1865 (as concinnum) | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Erigeron aphanactis | name=Erigeron aphanactis | ||
− | |||
|authority=(A. Gray) Greene | |authority=(A. Gray) Greene | ||
|rank=species | |rank=species | ||
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|publication year=1897 | |publication year=1897 | ||
|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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_609.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron |
Revision as of 20:29, 16 December 2019
Perennials, 2–20(–30) cm; taprooted, caudices branched. Stems erect to slightly decumbent-ascending, canescent-hirsute, densely stipitate-glandular. Leaves basal (persistent) and cauline (petioles prominently ciliate, at least on proximal portions, hairs thick-based, spreading); basal blades linear-oblanceolate to spatulate, 20–80 × 2–7 mm, cauline gradually or abruptly reduced distally, sometimes bractlike (stems scapiform), margins entire, faces canescent-hirsute, densely stipitate-glandular (hairs finer). Heads (disciform) 1–4. Involucres 4–6 × 7–15 mm. Phyllaries in 2–3 series, coarsely hirsute, densely minutely glandular. Ray (pistillate) florets 30–45; corollas usually tubular, lacking laminae, or laminae shorter than involucres. Disc corollas 2.8–4.5 mm (throats white-indurate and inflated, conspicuously puberulent). Cypselae 1.5–1.8 mm, 2-nerved, faces sparsely strigose (carpopodia whitish); pappi: outer of scales or setae, inner of 7–20 bristles.
Distribution
w United States.
Discussion
Varieties 2 (2 in the flora).
Erigeron aphanactis is distinguished from E. austiniae by its conspicuously puberulent (versus essentially glabrous) disc corollas and white (versus yellow) carpopodia; it also is similiar in habit and vestiture to E. concinnus, which has conspicuous white to pinkish rays.
Selected References
None.
Key
1 | Stems leafy; heads usually 2–3; disc corolla lobes usually yellowish | Erigeron aphanactis var. aphanactis |
1 | Stems scapiform; heads 1; disc corolla lobes sometimes becoming reddish or purplish | Erigeron aphanactis var. congestus |