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Caltha palustris Linn.
Caltha, from the Latin, "cup"Greek name for some yellow-flowered plants
* palustris, from the Latin, paluster, "boggy, marshy"
Allen Enc.:Tincture of the whole plant when in flower.
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Magnoliidae –
Order Ranunculales –
Family Ranunculaceae – Buttercup family
Genus Caltha L. – marsh marigold
Species Caltha palustris L. – yellow marsh marigold
Murphy:This is an unproved remedy, but it has irritant properties like the other Ranunculacee.
Pharmacopea: History and authority: Introduces by Roth 1925, Allen: Encyclop. of Pure Mat. Med. Vol. II, 421.
Description of the substance
A very common plant of wet ground in fens, lakesides, riversides and similar situations. Its large yellow flowers are produced in plenty in early summer.
ypical Caltha palustris var. palustris, characterized by stout, permanently upright stems that do not produce roots and shoots at the nodes after anthesis. The basal leaves are broadly heart-shaped to kidney-shaped with coarsely crenate-dentate margins and overlapping basal lobes. Generally more than three flowers occur on a stem.
A hardy, succulent perennial of marsh and waterside
* Leaves rounded, heart, or kidney-shaped, dark green, 3"-7" wide, usually with two lobes at base
* Stems hollow, 8"-24" tall, mostly arising from the base
* Roots deep, tangled
* Flowers in clusters of 1-7, cup-shaped, waxy yellow, 1"-2" wide, on long stalks above the foliage in early spring.
* Sepals 5, yellow
* Petals absent
* Stamens many
* Pistils 4-15
* Ovary superior (within blossom)
* Fruit a folicle
* Seeds elliptic, 1.5mm-2.5 mm
* Distinguished from other species by its broad, heart or kidney shaped leaves, and, in spring, by its bright yellow blossoms.
* Distinguished from the closely related, and in the North Country extremely rare, Floating Marsh Marigold (Caltha natans), by its yellow rather than white flowers and its growth habit of being anchored in wet soil rather than floating on shallow waters.
* Field Marks
* loose clumps of heart or kidney shaped leaves
* bright yellow, buttercup like blossoms in early spring
* Circumboreal; south to North Carolina, Tennesse, Iowa, Nebraska, and Oregon. Also Eurasia.
* Edges of ponds and moist soils; shallow waters, hardwood swamps.
* Marshes, fens, ditches, wet woods and swamps, thriving best in open or only partly shaded sites