Eastern Mojave Vegetation Coll. No. 2136, Potentilla pensylvanica  


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  Rosaceae Potentilla pensylvanica
Photographed 3 December 2019.

Plants of Jefferson County Open Space
Jefferson County, Colorado

Potentilla pensylvanica L.  Prairie Cinquefoil.

North Table Mountain Park, Jefferson County, Colorado. Near the north boundary of the park, lower north slopes of North Table Mountain, in what appears to be the hummocky terrain of an ancient landslide, 6.26 km. north northeast of the GNIS location of Golden. 39.7977N, 105.209W. WGS 1984 Elev. 1813 m. Leaflet margins revolute. Also collected here: Boechera fendleri, Delphinium carolinianum ssp. virescens, Senecio integerrimus, and Viola nuttallii.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2136. 11-Jul-2019

Coll. No. 2136, 11 July 2019, characters observed: Perennial herb, to 40 cm., erect; Leaves, basal and cauline, basal, 130 mm. × 25 mm. wide, compound, pinnate, leaflets, #11, margins, revolute; cauline, #7-10 per stem, alternate, reduced in size, compound, pinnately-lobed, stipules, large, to 25 mm., deeply cleft, petiole, 25 mm., blade, 70 mm. × 32 mm. wide, leaflets, #10, 30 mm. × 11 mm. wide, lobed ≥½, margin, revolute; Inflorescence, clusters of #5-7 flowers; Pedicels, 2-10 mm.; Sepals, #5, 5 mm., green, hairy, glands, abundant, epicalyx bractlets, 4.5 mm. × 1.8 mm. wide; Petals, #5, 5.3 mm. × 4.5 mm. wide, yellow; Receptacle, hairy, 3 mm.; Stamens, ±16; Anthers, 0.7 mm. × 0.6 mm. wide; Ovary, many; Styles, 1 per ovary, thickest near base, tapered throughout; Achenes, 1.3 mm. × 0.8 mm. wide, attachment, lateral, rugose.

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Other photos about Species - Rosaceae or Potentilla pensylvanica.


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Date and time this page was prepared: 9/18/2023 5:25:57 PM