Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Brassicales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Nasturtium officinale
FAMILY
Brassicaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Watercress at Vascular Plants of North Carolina.
(?)
PLANTS NATIONAL DATABASE:
Nasturtium officinale
FAMILY
Brassicaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Nasturtium officinale
SYNONYMOUS WITH Flora of North America
Nasturtium officinale
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Rorippa nasturtium-aquaticum
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 088-20-001:
Nasturtium officinale FAMILY Brassicaceae
INCLUDING Gray's Manual of Botany (Fernald, 1950)
Nasturtium officinale var. officinale
INCLUDING Gray's Manual of Botany (Fernald, 1950)
Nasturtium officinale var. siifolium
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Sisymbrium nasturtium-aquaticum
COMMON NAME:
Watercress
To see larger pictures, click or hover over the thumbnails.
)
USDA Forest Service / A Guide to Medicinal Plants of Appalachia. 1969 mpa_page_183
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_rona2_002_lvd
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_sina4_001_lvd
)
USDA / Selected Weeds of the US. 1970 swus_page_211
)
Gill Newberry gn04_n_officinale
April
The dark green leaves are pinnately compound; terminal leaflet larger, round, per Wildflowers of Tennessee (Carman, 2005).
COMPARE
pinnately compound leaves of forbs
)
Richard and Teresa Ware rtw_nasturtium_officinale
September
Flowers are about 0.2" wide and clustered at the stem tips, per Wildflowers of Tennessee (Carman, 2005).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Nasturtium officinale
FAMILY
Brassicaceae
(?)
PLANTS NATIONAL DATABASE:
Nasturtium officinale
FAMILY
Brassicaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Nasturtium officinale
SYNONYMOUS WITH
Flora of North America
Nasturtium officinale
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Rorippa nasturtium-aquaticum
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 088-20-001:
Nasturtium officinale
FAMILY
Brassicaceae
INCLUDING
Gray's Manual of Botany (Fernald, 1950)
Nasturtium officinale var. officinale
INCLUDING
Gray's Manual of Botany (Fernald, 1950)
Nasturtium officinale var. siifolium
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Sisymbrium nasturtium-aquaticum
967
Emergent aquatic (rooted); Forb
Perennial
Habitat: Streams, springs, seepages, per Weakley's Flora
Non-native: Eurasia
Common in Mountains of GA & NC, uncommon in SC Coastal Plain (rare elsewhere in GA-NC-SC)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
This plant may be causing problems in natural areas outside its native range, according to authorities such as:
- Georgia Exotic Pest Plant Council, 2006
- Kentucky Exotic Pest Plant Council, 2013
- Tennessee Exotic Pest Plant Council, 2009
LEAVES:
Odd-pinnately compound: 3-9(13) leaflets
Alternate
RHIZOMES? STOLONS?
Rhizomatous, rooting at proximal nodes
FLOWER:
Spring/Summer
White or pink
Radially symmetrical
4 sepals
4 petals
6 stamens tetradynamous (2 short, 4 long)
Bisexual
FRUIT:
Spring/Summer
Silique
TO LEARN MORE about this plant, look it up in a good book!
- Newcomb's Wildflower Guide (Newcomb, 1977) p148
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p112
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p020
- Wildflowers of Tennessee (Carman, 2005) p096
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p123
- Wildflowers of the Southern Mountains (Smith, 1998) p061
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