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Calla palustris

Calla palustris L.

 

Wild Calla, Water Arum, Wild-calla

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassLiliopsidaMonocots (plants with a single seed leaf); includes the lily family
SubclassAlismatidaeAquatic and marshy plants
OrderAlismatalesHerbaceous flowering plants found in marshy habitats
FamilyAraceaeArum family, with plants whose flower is enclosed in a spathe
GenusCalla
SpeciespalustrisGrowing in marshes

About plant names...

These North American native plants inhabit swamps, sea­sonally flooded bogs, stream banks, ditches, quagmires, and muddy lake shores.

Plants: 4-16" (10-40 cm) in size, partially submerged. They have a weak odor that is unpleasant to people, but that flies and beetles and even snails find appealing. Plants can form thick colonies.

Leaves: Leaves emerge on stalks up to 16" (40 cm), above a submersed rootstalk. Leaves are heart-shaped (ovate), waxy, smooth, and smooth-edged, with edges tending to curl inward. There is a single leaf, 1¾-4½" (5-12 cm) long, atop each stalk.

Flowers: A single white, waxy, heart-shaped “petal,” attached to the stalk at its base, appears to be the flower, but this is really a spathe, a specialized protective leaf. The actual flowerhead, called the spadix, is about 1" (2.5 cm) long and ½" (1.3 cm) around, also whitish, and covered with tiny white/green flowers that lack petals. The upper part of the flowerhead has unisexual staminate flowers, while the lower part is bisexual. The flower is supported on a stem 3-12" (7.6-30 cm) above the water line. They appear from June to July.

Fruits: Irregular, angled, but roughly pear-shaped berries up to ½" (1.3 cm) around, and bright red.

Edibility: Poisonous. Skull & Crossbones. All parts of the plant are toxic. Calcium oxalate is probably the single most toxic compon­ent. Nevertheless, in times of poverty, some peoples pro­cessed the plant in a way that reduced its toxicity, and mixed it with other foods.

Online References:

Calla palustris at the Central Yukon Species Inventory Project

Calla palustris on www.luontoportti.com

Calla palustris at Minnesota Wildflowers

Calla palustris on gobotany.nativeplanttrust.org

Calla palustris (Wild Calla, Water Arum, Wild-calla)

5/22/2010 · Garden in the Woods, Framingham, MA
≈ 7 × 9" (18 × 22 cm)

Calla palustris (Wild Calla, Water Arum, Wild-calla)

5/15/2010 · Garden in the Woods, Framingham, MA
≈ 31 × 21" (78 × 52 cm)

Calla palustris description by Thomas H. Kent, last updated 25 May 2020.

© FloraFinder.org. All rights reserved.


 

Calla palustris (Wild Calla, Water Arum, Wild-calla)

6/3/2018 · Mt. Watatic, Ashby, MA
≈ 10 × 7" (24 × 17 cm)

Calla palustris (Wild Calla, Water Arum, Wild-calla)

6/3/2018 · Mt. Watatic, Ashby, MA
≈ 8 × 10" (20 × 24 cm)

Calla palustris (Wild Calla, Water Arum, Wild-calla)

6/3/2018 · Mt. Watatic, Ashby, MA
≈ 6 × 5" (15 × 13 cm)

Calla palustris (Wild Calla, Water Arum, Wild-calla)

6/3/2018 · Mt. Watatic, Ashby, MA
≈ 6 × 5" (15 × 12 cm)

Range: Zones 2-6:

About this map...