Overview

Distribution

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Localities documented in Tropicos sources

Impatiens occidentalis Rydb.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Localities documented in Tropicos sources

Impatiens noli-tangere L.:
Canada (North America)
China (Asia)
Japan (Asia)
Mongolia (Asia)
Russian Federation (Asia)
South Korea (Asia)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Anhui, Gansu, Guangdong, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Zhejiang [Japan, Korea, Mongolia, Russia (Far East, Siberia); C and SW Asia, Europe, NW North America].
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Physical Description

Morphology

Description

Plants annual, 40-70 cm tall. Stem succulent, robust, many branched in upper part, glabrous, lower nodes often swollen with fibrous roots. Leaves alternate, upper leaves shortly petiolate or subsessile; petiole 2-5 cm, slender; leaf blade green abaxially, dark green adaxially, ovate or ovate-elliptic, 3-8 × 1.5-4 cm, both surfaces glabrous, base cuneate or rounded, margin crenate, teeth mucronulate, apex obtuse, rarely acute. Inflorescences 2-4-flowered; peduncles 1-1.5 cm. Pedicels 1.5-2 mm, bracteate above middle; bracts persistent, lanceolate, 3-5 mm, herbaceous. Flowers yellow. Lateral sepals 2, ovate or broadly ovate, 5-6 mm, apex acute. Lower sepal sparsely orange spotted, broadly funnelform, gradually narrowed into an incurved spur 1-1.5 cm. Upper petal orbicular or suborbicular, ca. 1 cm in diam., apex emarginate, rostellate, abaxial midvein green cristate; lateral united petals not clawed, 2-2.5 cm, 2-lobed; basal lobes oblong, small; distal lobes orange spotted at base, broadly dolabriform; auricle narrow. Filaments linear, slightly swollen above; anthers ovoid, apex acute. Ovary erect, fusiform. Capsule linear-cylindric, 1.5-2.5 cm. Seeds many, brown, oblong-globose, 3-4 mm, smooth. Fl. Jul-Sep. 2n = 20.
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Type Information

Isotype for Impatiens occidentalis Rydb.
Catalog Number: US 14855
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): W. N. Suksdorf
Year Collected: 1890
Locality: North fork of Nooksack River., Whatcom, Washington, United States, North America
  • Isotype: Rydberg, P. A. 1910. N. Amer. Fl. 25: 94.
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Ecology

Habitat

Forest understories, forest margins, grasslands, along canals; 900-2400 m.
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Associations

In Great Britain and/or Ireland:
Foodplant / feeds on
epiphyllous, usually infertile pycnidium of Phyllosticta coelomycetous anamorph of Phyllosticta impatientis feeds on live leaf of Impatiens noli-tangere
Remarks: season: 8-9

Plant / resting place / on
puparium of Phytoliriomyza melampyga may be found on leaf of Impatiens noli-tangere

Foodplant / pathogen
sporangium of Plasmopara obducens infects and damages pale green leaf of Impatiens noli-tangere

Foodplant / parasite
Podosphaera balsaminae parasitises Impatiens noli-tangere

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Impatiens noli-tangere

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Impatiens noli-tangere

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 10
Specimens with Barcodes: 11
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N4 - Apparently Secure

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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Wikipedia

Impatiens noli-tangere

Impatiens noli-tangere (Touch-me-not Balsam; Latin impatiēns "impatient" or "not allowing", and nōlī tangere "do not touch": literally "be unwilling to touch") is an annual herbaceous plant in the family Balsaminaceae found in damp places in Europe, Asia and North America. The yellow flowers are followed by pods which forcefully explode when ripe, ejecting the seeds for some distance.

Botanical illustration by Otto Wilhelm Thomé, 1885

Also called Touch-me-not, Yellow Balsam, Jewelweed or Wild Balsam.

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Names and Taxonomy

Taxonomy

Comments: Native North American species, recorded from western U.S. and western Canada (Kartesz, 1999).

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