Difference between revisions of "Tetraneuris linearifolia"
Pittonia 3: 269. 1898.
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− | |distribution= | + | |distribution=Kans.;N.Mex.;Okla.;Tex.;n Mexico. |
|discussion=<p>Varieties 2 (2 in the flora).</p><!-- | |discussion=<p>Varieties 2 (2 in the flora).</p><!-- | ||
--><p>Plants of <i>Tetraneuris linearifolia</i> morphologically intermediate between the two varieties are found in Bee, Duval, Live Oak, and McMullen counties, Texas.</p> | --><p>Plants of <i>Tetraneuris linearifolia</i> morphologically intermediate between the two varieties are found in Bee, Duval, Live Oak, and McMullen counties, Texas.</p> | ||
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|basionyms=Hymenoxys linearifolia | |basionyms=Hymenoxys linearifolia | ||
|family=Asteraceae | |family=Asteraceae | ||
− | |distribution= | + | |distribution=Kans.;N.Mex.;Okla.;Tex.;n Mexico. |
|reference=None | |reference=None | ||
|publication title=Pittonia | |publication title=Pittonia | ||
|publication year=1898 | |publication year=1898 | ||
|special status= | |special status= | ||
− | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_1121.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae |
Revision as of 21:54, 27 May 2020
Annuals, 16–50+ cm. Caudices none. Stems 1–10, erect or ± decumbent, leafy, unbranched or branched distally. Leaves basal and cauline, ± hairy, ± gland-dotted; basal blades spatulate to oblanceolate, entire or with 2–6 teeth or lobes; proximal cauline blades narrowly spatulate or oblanceolate to linear-oblanceolate, entire or with 2–6 teeth or lobes; mid blades oblanceolate to linear-oblanceolate to linear, 0.9–9.5(–16) mm wide, entire or with 1–2 teeth or lobes; distal blades narrowly oblanceolate to linear-oblanceolate to linear, entire or with 1–2 teeth or lobes. Heads 8–50(–80) per plant, borne singly or in corymbiform arrays. Peduncles 8–29 cm, ± hairy. Involucres 5–10 × 7–15 mm. Outer phyllaries 8–21, 2.4–5.5 mm, margins 0–0.2 mm wide, not scarious or scarious, abaxial faces ± hairy. Ray florets 9–25; corollas 8.2–16.8 mm. Disc florets 50–200+; corollas yellow, 1.6–3 mm. Cypselae 1.5–2.6 mm; pappi of 4–8 obovate, often aristate scales 1–2.5 mm.
Distribution
Kans., N.Mex., Okla., Tex., n Mexico.
Discussion
Varieties 2 (2 in the flora).
Plants of Tetraneuris linearifolia morphologically intermediate between the two varieties are found in Bee, Duval, Live Oak, and McMullen counties, Texas.
Selected References
None.
Key
1 | Stems erect, branched distally; leaves ± hairy, basal blades entire or with 2(–6) teeth or lobes, proximal cauline blades entire or with 1–2 teeth or lobes, mid blades (0.9–)1.4–3(–4.8) mm wide; involucres (7–)8–11(–12) mm diam.; pappus scales aristate; Kansas, New Mexico, Oklahoma, Texas, on limestone-derived soils | Tetraneuris linearifolia var. linearifolia |
1 | Stems erect or ± decumbent, ± branched distally; leaves usually densely hairy, basal blades with 2–6 teeth or lobes, proximal cauline blades with 2(–6) teeth or lobes, mid blades (2.5–)3.9–9.5(–16) mm wide; involucres 12–15 mm diam.; pappus scales not aristate; s Texas on sand | Tetraneuris linearifolia var. arenicola |