Difference between revisions of "Tetraneuris linearifolia"
Pittonia 3: 269. 1898.
FNA>Volume Importer |
FNA>Volume Importer |
||
Line 61: | Line 61: | ||
|publication year=1898 | |publication year=1898 | ||
|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/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 21:33, 16 December 2019
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
sw United States, 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 |