Difference between revisions of "Polygonum hickmanii"

H. R. Hinds & Rand. Morgan

Novon 5: 336. 1995.

Common names: Hickman’s knotweed
Treatment appears in FNA Volume 5. Treatment on page 563. Mentioned on page 561, 562.
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|distribution=Calif.
 
|distribution=Calif.
 
|discussion=<p>Of conservation concern.</p><!--
 
|discussion=<p>Of conservation concern.</p><!--
--><p>The above description is based on the original one by Hinds and Morgan. Polygonum hickmanii is known only from the northern end of Scotts Valley in Santa Cruz County.</p>
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--><p>The above description is based on the original one by Hinds and Morgan. <i>Polygonum hickmanii</i> is known only from the northern end of Scotts Valley in Santa Cruz County.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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-->{{#Taxon:
 
-->{{#Taxon:
 
name=Polygonum hickmanii
 
name=Polygonum hickmanii
|author=
 
 
|authority=H. R. Hinds & Rand. Morgan
 
|authority=H. R. Hinds & Rand. Morgan
 
|rank=species
 
|rank=species
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|publication year=1995
 
|publication year=1995
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V5/V5_1149.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_1149.xml
 
|subfamily=Polygonaceae subfam. Polygonoideae
 
|subfamily=Polygonaceae subfam. Polygonoideae
 
|genus=Polygonum
 
|genus=Polygonum

Latest revision as of 22:08, 5 November 2020

Herbs, compact, often cushion-like. Stems erect, color unknown, simple to profusely branched from near base, not wiry, 2–5 cm, glabrous. Leaves persistence and crowded at brance tips, not articulated to ocreae; ocrea 4–6 mm, glabrous, proximal part cylindric, distal part silvery, disintegrating nearly to base into straight fibers; petiole absent; blade 3-veined, without pleats, linear, 5–35 × 1–1.5 mm, margins revolute, smooth, apex acuminate. Inflorescences axillary; cymes insertion unknown, 1-flowered. Pedicels absent. Flowers closed; perianth 2–3 mm; tube 6–18 % of perianth length, tepals imbrication unknown, white with whitish or pink margins, petaloid, oblong, apex acute, mucronate; midveins unbranched; stamens 8; anthers orange-pink. Achenes enclosed in perianth, olive brown, ovate, 2–2.3 mm, faces subequal, shiny, smooth.


Phenology: Flowering May–Oct.
Habitat: Open, seasonally dry grasslands
Elevation: 200-300 m

Discussion

Of conservation concern.

The above description is based on the original one by Hinds and Morgan. Polygonum hickmanii is known only from the northern end of Scotts Valley in Santa Cruz County.

Selected References

None.

Lower Taxa

None.
... more about "Polygonum hickmanii"
Mihai Costea +, François J. Tardif +  and Harold R. Hinds† +
H. R. Hinds & Rand. Morgan +
Hickman’s knotweed +
200-300 m +
Open, seasonally dry grasslands +
Flowering May–Oct. +
Undefined sect. Duravia +  and Polygonum sect. Monticola +
Polygonum hickmanii +
Polygonum sect. Duravia +
species +