Difference between revisions of "Petradoria pumila"
Erythea 3: 13. 1895.
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|name=Chrysoma pumila | |name=Chrysoma pumila | ||
|authority=Nuttall | |authority=Nuttall | ||
| + | |rank=species | ||
|publication_title=Trans. Amer. Philos. Soc., n. s. | |publication_title=Trans. Amer. Philos. Soc., n. s. | ||
|publication_place=7: 324. 1840 | |publication_place=7: 324. 1840 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Petradoria pumila | name=Petradoria pumila | ||
| − | |||
|authority=(Nuttall) Greene | |authority=(Nuttall) Greene | ||
|rank=species | |rank=species | ||
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|publication year=1895 | |publication year=1895 | ||
|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_374.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Petradoria | |genus=Petradoria | ||
Revision as of 20:28, 16 December 2019
Stems 1–20+. Leaf blades 20–120 × 1–12 mm; cauline well developed, coriaceous, bases cuneate to attenuate, expanded laterally and abaxially, clasping, less so distally, apices acute to attenuate. Peduncles 1–5+ mm, glabrous or scabrous, resinous. Phyllaries mostly tan, 1–7 × 0.5–1+ mm, margins mostly entire, apices acute to attenuate (outer), obtuse to truncate, often mucronate (inner), a darker, thickened subapical gland often present. Ray florets 1–3, pistillate; corollas 4–8 mm, tubes 2–3.5 mm, laminae ± elliptic, 2.5–4.5 × 0.7–2.5 mm, lobes 0.5–1 mm; style branches 1–2 mm, linear-lanceolate, stigmatic lines extending around entire margin, appendages 0. Disc corollas 3.5-5.5 mm; style branches essentially lacking, stigmatic lines 0, appendages ± 1 mm, covered with collecting hairs. Cypselae of ray 4–5 mm; pappi 3.5–7 mm.
Distribution
w United States.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
| 1 | Leaves usually 1(–3)-nerved, 1–2 mm wide, often; involucres 1.3–2 mm wide; ray florets usually 1, laminae 0.7–1.5 mm wide; disc florets 2–3 | Petradoria pumila var. graminea |
| 1 | Leaves usually 3–5-nerved, 2–12 mm wide; involucres 1.9–3 mm wide; ray florets usually (1–)2–3, laminae 1–2.4 mm wide; disc florets 2–4 | Petradoria pumila var. pumila |