Ribes americanum Miller - Wild Black Currant. 2n = 16.

Rich, wet thickets and slopes.

RIBES AUREUM Pursh var. VILLOSUM de Candolle - Buffalo Currant. 2n = 16.

Old house sites, roadsides. From farther west. [R. ODORATUM H. L. Wendland]

Ribes cynosbati Linnaeus - Prickly Gooseberry. 2n = 16.

Rich, open, usually moist, woods.

Ribes glandulosum Grauer - Skunk Currant. 2n = 16.

Wet woods and clearings.

Ribes hirtellum Michaux - Smooth Gooseberry. 2n = 16.

Rocky woods, swamps. [R. hirtellum var. calcicola (Fernald) Fernald; R. hirtellum var. saxosum (Hooker) Fernald]

Ribes lacustre (Persoon) Poiret - Bristly Black Currant. 2n = 16.

Cold woods and swamps.

RIBES MISSOURIENSE Nuttall - Missouri Gooseberry. 2n = 16.

Roadsides. From farther west.

RIBES NIGRUM Linnaeus - Garden Black Currant. 2n = 16.

Thickets, old house sites. From Eurasia.

Ribes rotundifolium Michaux - Appalachian Gooseberry. 2n = ?

Open rocky places and thickets.

RIBES RUBRUM Linnaeus - Red Garden Currant. 2n = 16.

Old house sites, thickets, riverbanks, open woods, roadsides. From Europe. [R. sativum (Reichenbach) Syme]

Ribes triste Pallas - Wild Red Currant. 2n = 16.

Swampy woods, subalpine ravines.

RIBES UVA-CRISPA Linnaeus - European Gooseberry. 2n = 16.

Fields, roadsides, thickets, woods. From Europe and northern Africa. [R. GROSSULARIA Linnaeus]

ANAGALLIS ARVENSIS Linnaeus - Scarlet Pimpernel. 2n = 40.

Dry, sandy, waste fields. From Eurasia. [A. ARVENSIS var. CAERULEA (Linnaeus) Gouan]

Lysimachia ciliata Linnaeus - Fringed Loosestrife. 2n = 34, 92, 96, 100, 108, 112.

Moist thickets, rich woods and shores, roadsides. [Steironema ciliatum (Linnaeus) Baudo]

LYSIMACHIA CLETHROIDES Duby - Gooseneck Loosestrife. 2n = 24.

Moist meadows, woodland margins, open thickets. From eastern Asia.

Lysimachia hybrida Michaux - Lowland Loosestrife. 2n = 34.

Swamps, shores.

Lysimachia maritima (Linnaeus) Galasso, Banfi & Soldano - Sea Milkwort. 2n = 30, 60.

Saline or brackish shores, salt marshes. [Glaux maritima Linnaeus var. maritima; G. maritima var. obtusifolia Fernald]

LYSIMACHIA NUMMULARIA Linnaeus - Moneywort. 2n = 30, 32, 43 (Europe).

Damp roadsides, wet meadows, shores. From Eurasia.

LYSIMACHIA PUNCTATA Linnaeus - Garden Loosestrife. 2n = 30.

Roadsides, old house sites, waste ground, old fields. From Europe.

Lysimachia quadrifolia Linnaeus - Whorled Loosestrife. 2n = 84.

Open woods, clearings, roadsides, thickets.

Lysimachia terrestris (Linnaeus) Britton, Sterns & Poggenberg - Swamp Candles. 2n = 84.

Swamps, shores, low, wet ground, roadside ditches. [L. terrestris var. ovata (E. L. Rand & Redfield) Fernald]

Lysimachia thyrsiflora Linnaeus - Tufted Loosestrife. 2n = 40, 42, 54.

Bogs, cold swamps, marshes. [Naumburgia thyrsiflora (Linnaeus) Reichenbach]

LYSIMACHIA VULGARIS Linnaeus - Garden Loosestrife. 2n = 28, 42, 56, 84 (Europe).

Wet roadsides, swampy thickets, waste places, old house sites. From coastal Europe.

Lysimachia hybrids

Lysimachia X commixta Fernald - .

[L. terrestris (Linnaeus) Britton, Sterns & Poggenberg X L. thyrsiflora Linnaeus]

Lysimachia X producta Fernald (pro sp.) - .

Bogs, swamps, open, moist woods, damp thickets, shores. [L. quadrifolia Linnaeus X L. terrestris (Linnaeus) Britton, Sterns & Poggenberg]

Trientalis borealis Rafinesque - Starflower. 2n = 96.

Woods, usually dry.

PAEONIA LACTIFLORA Pallas - Chinese Peony. 2n = 10.

Waste places, old house sites. From eastern Asia.

PAEONIA OFFICINALIS Linnaeus - Garden Peony. 2n = 20.

Old fields and orchards. From Europe.

Penthorum sedoides Linnaeus - Ditch-stonecrop. 2n = 18.

Wet, low, open ground, shores, marshes, streambanks.

ANDROSACE OCCIDENTALIS Pursh - Western Rock-jasmine. 2n = 20.

Waste places. From farther west.

Hottonia inflata Elliott - American Featherfoil. 2n = 22.

Muddy ponds, pools, swamps, backwaters of streams.

PRIMULA JAPONICA A. Gray - Japanese Primrose. 2n = 44.

Wet woods. From Japan. [Including the various cultivars to which this name is applied.]

Primula laurentiana Fernald - Bird's-eye Primrose. 2n = 72.

Ledges, meadows, shores, chiefly calcareous.

Primula mistassinica Michaux - Dwarf Canadian Primrose. 2n = 18.

Calcareous cliffs, shores, meadows.

PRIMULA VERIS Linnaeus - Cowslip. 2n = 22 (Europe).

Shaded slopes, often in calcareous soil. From Europe. [P. OFFICINALIS (Linnaeus) Hill]

SARRACENIA FLAVA Linnaeus - Trumpets. 2n = 26.

Floating Sphagnum mats. From farther south.

Sarracenia purpurea Linnaeus subsp. purpurea - Common Pitcher-plant. 2n = 26.

Peaty soil of bogs, swamps and pond margins.

ASTILBE JAPONICA (C. Morren & Decaisne) A. Gray - False Spiraea. 2n = 36.

Waste places, roadsides. From Japan.

Chrysosplenium americanum Schweinitz ex Hooker - American Golden Saxifrage. 2n = 18, 24.

Springs, swampy woods, cold, wet places.

Heuchera americana Linnaeus var. americana - Rock-geranium. 2n = 14.

Rich, wet woods.

Micranthes foliolosa (R. Brown) Gornall - Leafy Saxifrage. 2n = 56.

Mossy, alpine rocks. [Saxifraga stellaris Linnaeus var. comosa Retzius]

Micranthes pensylvanica (Linnaeus) Haworth - Swamp Saxifrage. 2n = 56, 84, 112.

Swamps, wet meadows, boggy thickets. [Saxifraga pensylvanica Linnaeus var. pensylvanica; S. pensylvanica var. purpuripetala (A. M. Johnson) Bush]

Micranthes virginiensis (Michaux) Small - Early Saxifrage. 2n = 20 (+ 0-6 supernumeraries), 38.

Open rocky woods, rock outcrops, ledges, rocky hillsides. [Saxifraga virginiensis Michaux]

Mitella diphylla Linnaeus - Fairy-cup. 2n = 14.

Rich woods.

Mitella nuda Linnaeus - Naked Miterwort. 2n = 14, 28.

Wet woods, swamps, often in moss. [M. prostrata Michaux]

Saxifraga aizoides Linnaeus - Yellow Mountain Saxifrage. 2n = 26.

Calcareous cliffs.

Saxifraga cernua Linnaeus - Nodding Saxifrage. 2n = 24, 36, 48, 52, 56, 60, 70, 72.

Wet ledges at high altitude.

Saxifraga oppositifolia Linnaeus subsp. oppositifolia - Purple Mountain Saxifrage. 2n = 26, 39, 48, 52.

Calcareous cliffs.

Saxifraga paniculata Miller - White Mountain Saxifrage. 2n = 28.

Rocky ledges, often calcareous. [S. aizoön Jacquin var. neogaea Butters]

Saxifraga rivularis Linnaeus subsp. rivularis - Alpine Brook Saxifrage. 2n = 52.

Wet, mossy, alpine areas.

Tiarella cordifolia Linnaeus - Foamflower. 2n = 14.

Rich, moist, deciduous woods.

HALESIA CAROLINA Linnaeus - Carolina Silverbell. 2n = 24.

Moist, deciduous woods, roadsides. From farther south and west. [H. tetraptera J. Ellis]

SYMPLOCOS PANICULATA Miquel - Sapphire-berry. 2n = 22.

Swamp margins. From Asia.

Samolus parviflorus Rafinesque - Seaside Brookweed. 2n = 26.

Tidal shores, wet places. [S. floribundus Kunth]