RI Violets

RI Violets

Violets are either acaulescent (having no stem) with leaves and peduncles arising from the rhizomes or caulescent (having a stem) bearing flowers and leaves on the same stem. There are three species of violets with leafy stems native to RI; Viola canadensis var. canadensis, Viola labradorica and Viola pubescens. All other native violets in RI are stemless.

Violets produce two kind of flowers; cleistogamous (having flowers without petals which do not open) and chasmogamous (having flowers with petals).  Chasmogamous flowers bloom in the spring and cleistogamous flowers in the summer.

Hybrids among violets are very common.  This can make identification problematic.
There are 14 species of violets native to RI. There are also several species of violets that are not native, but have naturalized.  This article deals only with native violets.

Unless otherwise specified, photo credits: Francis Underwood.

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For a printable pdf of the information on this page, click here.

 

 

Sweet White Violet

 

Viola blanda,
the Sweet White Violet
often has flowers borne on red stems. 
It can be found in rich woods. Uncommon.

 

 

 

Canadian White Violet
Photo credit:© JL Reveal, L.H. Bailey Hortorium, Cornell University.

 

Viola canadensis var. canadensis,
Canadian White Violet,
is found in rich woods. State Historical (1920).

 

 

 

 

Blue Marsh Violet     White form of Blue Marsh Violet

 

Viola cucullata,
Blue Marsh Violet,
is common in wet areas.  It also occurs as a
white-flowered form as seen here in
North Smithfield, RI. Common.

 

 

 

American Dog Violet       White form of American Dog Violet

 

Viola labradorica (V.conspersa),
American Dog Violet,
usually has light blue flowers, however white-flowered forms do occur. This white-flowered form (V. conspersa forma masonii) at right, was found in Charlestown, RI.  
Dog Violet grows in rich moist woods. Common.

 

 

 

Lanced-leaved Violet     Lanced-leaved Violet
Photo credit for photo on left:
© Scott A. Milburn, University of Wisconsin-Stevens Point


Photo credit for photo on right:
Jeff McMillian @ USDA-NRCS PLANTS Database


Viola lanceolata
,
Lanced-leaved Violet
.
is often found in wet habitats.
It has white flowers. Common.

 

 

 

Northern White Violet

 

Viola macloskeyi ssp. pallens,
Northern White Violet,
grows in wet, swampy areas. Common.

 

 

 

Northern Bog Violet
Photo credit: William R. Hewlett © California Academy of Sciences
Click here to go to original source of Viola nephropylla image.

 

Viola nephrophylla,
Northern Bog Violet,
grows in rich wet areas. It has blue flowers. Rare.

 

 

 

Palmate-leaved Violet    Foliage of Palmate-leaved Violet

 

Viola palmata var. palmata,  
Palmate-leaved Violet or Blue Wood Violet,
is rare in RI. It grows in rich woods. Haines in Botanical Notes #8, May 23, 2002 says “V. palmata is a heterophyllous species (the earlyand late season leaves unlobed, the mid-season leaves lobed)”.* (See Viola subsinuata below). State-threatened.

 

 

 

Birdfoot Violet    Birdfoot Violet

 

Viola pedata,
Birdfoot Violet,
grows in dry, sandy areas. Common.

 

 

 

Primrose-leaved Violet
Photo credit: Tom Barnes, University of Kentucky

 

Viola primulifolia,
Primrose-leaved Violet,
blooms white and grows in moist areas.  Rare.

 

 

 

Yeloow Forest Violet

Viola pubescens var. pubescens,
Yellow Forest Violet

is rare in RI.  It can be found in rich woods.
State Concern.

 

 

 

Round-leaved Yellow Violet

Viola rotundifolia,
Stemless Yellow Violet or Yellow Round-leaved Violet
is very rare in RI. It grows in rich, moist woods. 
State-threatened. This photo was taken from a
population in Kent County on April 20, 2004.

 

 

 

Northern Downy Viole    Ovate Leaved Violet in Bloom
Photo credit for photo on right: kbarton

 

Viola sagittaria var. ovata,
Northern Downy Violet or Ovate-leaved Violet,
grows in dry, open areas. Common. This photo at right
was taken on ledge in Cumberland, RI on May 27, 2005.

 

 

 

Common Blue Violet

 

Viola sororia,
Common Blue Violet
,
is found in woods and fields. Common.

This is the Rhode Island State Flower.

 

 

 

Early Blue Violet

 

Viola subsinuata,
Early Blue Violet,
is rare in RI.  It grows in rich woods. Haines says “V. subsinuata is a homophyllous plant with all leaves lobed into 5-16, often narrow, segments” (Botanical Notes #8, May 23, 2002). State Endangered.

 

 

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