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Image of Rothrock's Townsend daisy
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Rothrock's Townsend Daisy

Townsendia rothrockii A. Gray ex Rothrock.

Comments

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The types of Townsendia rothrockii and T. glabella may be conspecific.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 195, 202, 203 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Description

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Perennials, 1–3 cm (± pulvinate). Stems ± erect; internodes 0.1–1+ mm, glabrous or ± strigose. Leaves basal and cauline, ± spatulate to oblanceolate, 10–35 × 2–7 mm, ± fleshy, faces sparsely strigose or glabrous. Heads ± sessile or on peduncles 5–25+ mm. Involucres ± hemispheric, 12–28+ mm diam. Phyllaries 40–60+ in (3–)4–5+ series, the longer obovate to oblanceolate, 7–9+ mm (l/w = 2.5–5), apices obtuse to acute, abaxial faces glabrous. Ray florets 18–40; corollas blue to purplish adaxially, laminae 8–16 mm, glabrous abaxially. Disc florets 60–100+; corollas 3.5–4.5+ mm. Cypselae 4 mm, faces nearly glabrous (discs) or sparsely hairy (ray, hairs mostly at bases), hair tips glochidiform; pappi persistent; on ray cypselae 12–20 lanceolate to subulate scales 0.5–1.5 mm; on disc cypselae 15–30 subulate to setiform scales 3–6 mm. 2n = 36 (apomicts).
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 195, 202, 203 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Townsendia rothrockii

provided by wikipedia EN

Townsendia rothrockii is a species of flowering plant in the family Asteraceae known by the common name Rothrock's Townsend daisy.[2] It is endemic to Colorado in the United States, where there are 35 occurrences across thirteen counties. Reports of the plant from New Mexico are false.[1]

This plant is a small perennial herb forming a dense rosette of thick leaves up to 3.5 centimeters long. It grows from a taproot and caudex. The flower heads are cup-shaped and up to 2.8 centimeters wide. The ray florets are blue to lilac in color and measure up to 1.6 centimeters in length. The center of the head contains yellow disc florets.[3]

This plant grows in high-elevation habitat in the mountains of southwestern Colorado. It can be found in a number of habitat types in montane, subalpine and alpine climates, including fellfields, talus, meadows, ridges, passes, rock outcrops, and disturbed areas. Species associated with the plant include Abies lasiocarpa, Agrostis thurberiana, Anemone multifida, Draba nivalis var. exigua, Eritrichium aretioides, Festuca thurberi, Oreoxis alpina, Pinus ponderosa, Polemonium viscosum, Rydbergia grandiflora, Trifolium dasyphyllum, Trifolium nanum, and Valeriana capitata.[3]

References

  1. ^ a b Townsendia rothrockii. NatureServe.
  2. ^ USDA, NRCS (n.d.). "Townsendia rothrockii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 11 December 2015.
  3. ^ a b Beatty, B.L., W.F. Jennings, and R.C. Rawlinson (2004, April 26). Townsendia rothrockii Gray ex Rothrock (Rothrock’s Townsend daisy): A technical conservation assessment. [Online]. USDA Forest Service, Rocky Mountain Region.
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Townsendia rothrockii: Brief Summary

provided by wikipedia EN

Townsendia rothrockii is a species of flowering plant in the family Asteraceae known by the common name Rothrock's Townsend daisy. It is endemic to Colorado in the United States, where there are 35 occurrences across thirteen counties. Reports of the plant from New Mexico are false.

This plant is a small perennial herb forming a dense rosette of thick leaves up to 3.5 centimeters long. It grows from a taproot and caudex. The flower heads are cup-shaped and up to 2.8 centimeters wide. The ray florets are blue to lilac in color and measure up to 1.6 centimeters in length. The center of the head contains yellow disc florets.

This plant grows in high-elevation habitat in the mountains of southwestern Colorado. It can be found in a number of habitat types in montane, subalpine and alpine climates, including fellfields, talus, meadows, ridges, passes, rock outcrops, and disturbed areas. Species associated with the plant include Abies lasiocarpa, Agrostis thurberiana, Anemone multifida, Draba nivalis var. exigua, Eritrichium aretioides, Festuca thurberi, Oreoxis alpina, Pinus ponderosa, Polemonium viscosum, Rydbergia grandiflora, Trifolium dasyphyllum, Trifolium nanum, and Valeriana capitata.

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cc-by-sa-3.0
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Wikipedia authors and editors
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wikipedia EN