Difference between revisions of "Erigeron petrophilus"
Pittonia 1: 218. 1888.
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| − | --><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 10–20(–30) cm; taprooted, caudices woody, branches rhizomelike. <b>Stems</b> usually decumbent-ascending, sometimes nearly erect, sparsely to densely white-villous (hairs loose, thin, often crinkly) or sparsely hispido-pilose (hairs usually stiff, spreading, sometimes antrorsely ascending or appressed; var. viscidulus), usually densely minutely glandular at least distally, sometimes eglandular or obscurely glandular (var. viscidulus). <b>Leaves</b> cauline; blades narrowly oblong to oblanceolate, 10–25 × 1–5 mm, usually even-sized, margins entire, ciliate, faces sparsely to densely villous to hirsuto-villous, usually densely minutely glandular, sometimes eglandular or obscurely glandular (var. viscidulus). <b>Heads</b> (discoid) (1–)2–5(–10) in corymbiform arrays. <b>Involucres</b> 5.5–7(–8) × 8–12 mm. <b>Phyllaries</b> in 3–5 series (sometimes purplish apically), usually glabrous, sometimes with spreading hairs, densely glandular. <b>Ray</b> (pistillate) florets 0. <b>Disc</b> corollas 4–6 mm (throats slightly indurate, not inflated). <b>Cypselae</b> (2–)2.5–3 mm, 2-nerved, glabrous; pappi: outer of setae, inner of 22–30(–35) bristles.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 10–20(–30) cm; taprooted, caudices woody, branches rhizomelike. <b>Stems</b> usually decumbent-ascending, sometimes nearly erect, sparsely to densely white-villous (hairs loose, thin, often crinkly) or sparsely hispido-pilose (hairs usually stiff, spreading, sometimes antrorsely ascending or appressed; <i></i>var.<i> viscidulus</i>), usually densely minutely glandular at least distally, sometimes eglandular or obscurely glandular (<i></i>var.<i> viscidulus</i>). <b>Leaves</b> cauline; blades narrowly oblong to oblanceolate, 10–25 × 1–5 mm, usually even-sized, margins entire, ciliate, faces sparsely to densely villous to hirsuto-villous, usually densely minutely glandular, sometimes eglandular or obscurely glandular (<i></i>var.<i> viscidulus</i>). <b>Heads</b> (discoid) (1–)2–5(–10) in corymbiform arrays. <b>Involucres</b> 5.5–7(–8) × 8–12 mm. <b>Phyllaries</b> in 3–5 series (sometimes purplish apically), usually glabrous, sometimes with spreading hairs, densely glandular. <b>Ray</b> (pistillate) florets 0. <b>Disc</b> corollas 4–6 mm (throats slightly indurate, not inflated). <b>Cypselae</b> (2–)2.5–3 mm, 2-nerved, glabrous; pappi: outer of setae, inner of 22–30(–35) bristles.</span><!-- |
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|publication year=1888 | |publication year=1888 | ||
|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_697.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron | ||
Revision as of 15:26, 18 September 2019
Perennials, 10–20(–30) cm; taprooted, caudices woody, branches rhizomelike. Stems usually decumbent-ascending, sometimes nearly erect, sparsely to densely white-villous (hairs loose, thin, often crinkly) or sparsely hispido-pilose (hairs usually stiff, spreading, sometimes antrorsely ascending or appressed; var. viscidulus), usually densely minutely glandular at least distally, sometimes eglandular or obscurely glandular (var. viscidulus). Leaves cauline; blades narrowly oblong to oblanceolate, 10–25 × 1–5 mm, usually even-sized, margins entire, ciliate, faces sparsely to densely villous to hirsuto-villous, usually densely minutely glandular, sometimes eglandular or obscurely glandular (var. viscidulus). Heads (discoid) (1–)2–5(–10) in corymbiform arrays. Involucres 5.5–7(–8) × 8–12 mm. Phyllaries in 3–5 series (sometimes purplish apically), usually glabrous, sometimes with spreading hairs, densely glandular. Ray (pistillate) florets 0. Disc corollas 4–6 mm (throats slightly indurate, not inflated). Cypselae (2–)2.5–3 mm, 2-nerved, glabrous; pappi: outer of setae, inner of 22–30(–35) bristles.
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Stems and leaves eglandular or obscurely glandular; nonglandular hairs mostly stiff, straight or curved | Erigeron petrophilus var. viscidulus |
| 1 | Stems and leaves densely glandular; nonglandular hairs usually loose, often crinkly | > 2 |
| 2 | Phyllaries with distinctly expanded, purplish area at apices | Erigeron petrophilus var. petrophilus |
| 2 | Phyllaries with apices not purplish and differently colored from proximal portion | Erigeron petrophilus var. sierrensis |