Difference between revisions of "Sericocarpus oregonensis"

Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 302. 1840.

Common names: Oregon white-topped aster
Endemic
Synonyms: Aster oregonensis (Nuttall) Cronquist
Treatment appears in FNA Volume 20. Treatment on page 104. Mentioned on page 103.
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--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>24–102 cm. <b>Stems</b> erect, hairy. <b>Leaves</b> basal and proximal-most cauline withering by flowering; cauline sessile; blades broadly lanceolate to narrowly ovate, 10–100 × 3–20 mm, margins entire, apices acuminate to acute, faces hairy. <b>Heads</b> 2–4 per branch, in corymbiform arrays. <b>Peduncle</b> bracts broadly lanceolate to narrowly ovate, hairy. <b>Involucres</b> 5–7 mm at flowering. <b>Phyllaries</b> in 3–4 series, puberulent, outer series 3–5 mm, mid series 4–6 mm. <b>Ray</b> florets 2–6; straps 3–6 mm, corolla tubes 3–4 mm. <b>Disc</b> florets 9–20; corolla tubes 3–5 mm, lobes 1–2 mm. <b>Ovaries</b> fusiform, 1–3 mm, strigose; pappi: inner series 5–7 mm.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>24–102 cm. <b>Stems</b> erect, hairy. <b>Leaves</b> basal and proximal-most cauline withering by flowering; cauline sessile; blades broadly lanceolate to narrowly ovate, 10–100 × 3–20 mm, margins entire, apices acuminate to acute, faces hairy. <b>Heads</b> 2–4 per branch, in corymbiform arrays. <b>Peduncle</b> bracts broadly lanceolate to narrowly ovate, hairy. <b>Involucres</b> 5–7 mm at flowering. <b>Phyllaries</b> in 3–4 series, puberulent, outer series 3–5 mm, mid series 4–6 mm. <b>Ray</b> florets 2–6; laminae 3–6 mm, corolla tubes 3–4 mm. <b>Disc</b> florets 9–20; corolla tubes 3–5 mm, lobes 1–2 mm. <b>Ovaries</b> fusiform, 1–3 mm, strigose; pappi: inner series 5–7 mm.</span><!--
  
 
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Latest revision as of 17:15, 21 July 2021

Plants 24–102 cm. Stems erect, hairy. Leaves basal and proximal-most cauline withering by flowering; cauline sessile; blades broadly lanceolate to narrowly ovate, 10–100 × 3–20 mm, margins entire, apices acuminate to acute, faces hairy. Heads 2–4 per branch, in corymbiform arrays. Peduncle bracts broadly lanceolate to narrowly ovate, hairy. Involucres 5–7 mm at flowering. Phyllaries in 3–4 series, puberulent, outer series 3–5 mm, mid series 4–6 mm. Ray florets 2–6; laminae 3–6 mm, corolla tubes 3–4 mm. Disc florets 9–20; corolla tubes 3–5 mm, lobes 1–2 mm. Ovaries fusiform, 1–3 mm, strigose; pappi: inner series 5–7 mm.

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Stems and leaves sparsely hairy Sericocarpus oregonensis subsp. oregonensis
1 Stems and leaves moderately to densely hairy Sericocarpus oregonensis subsp. californicus