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Scanned 30 December 2020.
Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae
Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.
Gray Goldenrod.
Apex Park - Northern Parcel, Jefferson County, Colorado.
Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.46 km. south of the GNIS location of Golden.
39.7248°N, 105.2193°W.
WGS 1984
Elev. 1869 m.
Small patch perhaps 3 meters across. Mixed foothils grass- and shrub-land.
Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides, and Xanthisma spinulosum; the grasses having long since senesced.
Compare to Coll. No. 2433, collected 140 m. southwest.
Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.
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Tom Schweich
2432. |
19-Aug-2020 |
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Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae
Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.
Gray Goldenrod.
Apex Park - Northern Parcel, Jefferson County, Colorado.
Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.56 km. south of the GNIS location of Golden.
39.7239°N, 105.2198°W.
WGS 1984
Elev. 1886 m.
Leaves strongly 3-nerved, inflorescences with many mating assassin bugs. Large patch perhaps 40 m. × 10 m.
Mixed foothills grass- and shrub-land, the grasses having long since senesced in this long, hot, dry summer.
Compare to Coll. No. 2432, made 140 m. to the northeast.
Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.
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Tom Schweich
2433. |
19-Aug-2020 |
| Coll. No. 2432 & 2433, 19 Aug 2020, characters observed:
Perennial, 30-47 cm.,
stem and leaves short hairy throughout, getting a little glandular in the inflorescence;
Leaves,
basal, absent, withered(?),
cauline,
alternate, oblanceolate,
75 mm. × 12 mm. wide in #2432 vs.
75 mm. × 27 mm. wide in #2433,
reduced above,
distally shallowly toothed,
veins, #3, lateral veins less prominent but clearly present;
Inflorescence,
panicle,
compact,
branches secund;
Involucre,
4-5 mm.,
Phyllaries,
imbricate in 3+ series,
inner, > outer, oblong, 3.6 mm. × 1 mm. wide,
veins, #1,
tips, rounded;
Flowers,
of 2 kinds;
Rays, #7(8),
tube 2.6 mm. + blade 1.8 mm.,
yellow, fertile;
Disk flowers,
#5,
tube 2.0-2.5 mm. + lobes 1.0-1.3 mm.,
yellow;
Pappus, bristles, 4 mm.
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I'm not sure what this is.
It keys to Solidago nemoralis var. decemflora in Ackerfield (2015),
but does not look much like photos or voucher images on SEINet.
It keys to S. nana in Weber & Wittmann (2012),
but also does not look much like photos or voucher images on SEINet.
It does seem to fit into Solidago subsect. nemorales per Semple (2018).
I suppose it could be a hybrid of some sort.
I am open to other suggestions.
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Tom Schweich
tomas@schweich.com
510-701-3418
https://www.schweich.net
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Article records that use this photograph:
Other photos about Species - Asteraceae or Solidago nemoralis decemflora.
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Date and time this page was prepared:
11/3/2024 5:39:38 PM
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Eastern Mojave Vegetation