Scarlet Pimpernel: Lysimachia arvensis (Synonyms: Anagallis arvensis, Anagallis arvensis ssp. arvensis, Anagallis arvensis var. caerulea, Anagallis caerulea)
Fringed Loosestrife, Fringed Yellow-loosestrife: Lysimachia ciliata (Synonyms: Lysimachia greeneana, Lysimachia longipedicellata, Lysimachia membrenacea, Nummularia ciliata, Steironema ciliata, Steironema ciliatum, Steironema longipedicellatum, Steironema membranaceum, Steironema pumilum) - Flowers solitary and in the leaf axils. Midstem leaves ovate to ovate-lanceolate with ciliate margins. Corolla lobes yellow and about 1 cm.
Arctic Starflower, Northern Starflower: Lysimachia europaea (Synonyms: Trientalis arctica, Trientalis europaea, Trientalis europaea ssp. arctica , Trientalis europaea var. aleutica, Trientalis europaea var. arctica)
Lance-leaved Loosestrife: Lysimachia lanceolata (Synonyms: Lysimachia lanceolata var. angustifolia, Steironema heterophyllum, Steironema lanceolatum) - Flowers solitary and in the leaf axils. Midstem leves linear to lanceolate and rarely with ciliate margins. Corolla lobes yellow and 6-9 mm.
Broad-leaf Starflower, Pacific Starflower, Western Starflower: Lysimachia latifolia (Synonyms: Alsinanthemum europaeum, Alsinanthemum europaeum var. latifolium, Trientalis latifolia, Trientalis borealis, Trientalis borealis ssp. latifolia, Trientalis europaea var. latifolia)
Sea Milkwort, Saltwort: Lysimachia maritima (Synonyms: Glaucoides maritima, Glaux maritima , Glaux maritima ssp. maritima, Glaux maritima var. angustifolia, Glaux maritima var. macrophylla, Glaux maritima var. obtusifolia) - Flowers with 5 floral parts. Flowers subsessile in leaf axils with petals missing and sepals like petals. Perennial with opposite leaves.
Chaffweed: Lysimachia minima (Synonyms: Anagallidastrum exiguum, Anagallis minima, Centunculus minimus, Micropyxis exigua) - Flowers with 5 floral parts. Flowers sessile in leaf axils with tiny petals present, shorter than the sepals. Sepals not petal-like. Plants are annuals with alternate leaves.
Creeping-jenny, Moneywort: Lysimachia nummularia -
Tufted Lysimachia, Tufted Loosestrife, Tufted Yellow Loosestrife: Lysmimachia thrysiflora (Synonym: Lysimachia capitellata, Lysimachia subcapitata, Lysimachusa thyrsiflora, Naumbergia thyrsiflora, Nummularia thrysiflora, Thyrsanthus palustris) - Flowers in axillary racemes. Corolla lobes linear-lanceolate in shape, erect, clawed at their base and a pale yellow color with red or blackish-purple spots near their tips. Leaves opposite and narrowly lanceolate in shape.
Garden Yellow Loosestrife: Lysimachia vulgaris -