ACORUS

Acorus americanus (Rafinesque) Rafinesque. - Sweet Flag. 2n = 24.

Marshes, shores, wet meadows. [A. calamus misapplied] [The mapped distribution may include specimens of the introduced sterile triploid, A. CALAMUS, which is not generally distinguished in herbaria.]

ACORUS CALAMUS Linnaeus. - Sweet Flag. 2n = 36.

Marshes, shores, wet meadows. From Europe. [This sterile triploid is not separated from the native species in most herbaria.]

YUCCA

YUCCA FILAMENTOSA Linnaeus. - Yucca. 2n = 60.

Roadsides. From farther south.

ALISMA

Alisma gramineum Lejeune - . 2n = 14, 16.

Muddy shores and shallow water of basic lakes or streams.

Alisma subcordatum Rafinesque - Southern Water-plantain. 2n = 14.

Muddy or sandy shores, marshes, ditches, shallow water. [A. plantago-aquatica Linnaeus var. parviflorum (Pursh) Torrey]

Alisma triviale Pursh - Northern Water-plantain. 2n = 14, 28.

Muddy shores, marshes, ditches, shallow water. [A. plantago-aquatica Linnaeus var. americana J. A. Schultes & Schultes]

ECHINODORUS

Echinodorus tenellus (Martius) Buchenau - . 2n = ?.

Sandy shores of streams and lakes. [E. parvulus Engelmann]

SAGITTARIA

Sagittaria cuneata Sheldon - Wapato. 2n = 22.

Alkaline waters of muddy shores and shallow water of rivers.

Sagittaria engelmanniana J. G. Smith - . 2n = 22.

Acidic waters of shores, marshes, and bogs.

Sagittaria filiformis J. G. Smith - . 2n = ?.

Deep water of streams and in rapids. [S. subulata (Linnaeus) Buchenau var. gracillima (S. Watson) J. G. Smith]

Sagittaria graminea Michaux subsp. graminea - . 2n = 22.

Muddy or sandy shores, shallow water. [S. eatonii J. G. Smith]

Sagittaria latifolia Willdenow - . 2n = 22.

Muddy shores, ditches, bogs. [S. latifolia Willdenow var. obtusa (Muhlenberg) Wiegand]

Sagittaria montevidensis Chamisso & Schlechtendahl subsp. spongiosa (Engelmann) Bogin - . 2n = 22.

Tidal mud flats of estuaries and salt marshes. [S. spatulata (J. G. Smith) Buchenau;   Lophotocarpus spongiosus (Engelmann) J. G. Smith]

Sagittaria rigida Pursh - . 2n = 22.

Alkaline or brackish shores and shallow water.

Sagittaria subulata (Linnaeus) Buchenau - . 2n = 22.

Tidal mud.

Sagittaria teres S. Watson - . 2n = 22.

Acid, sandy pond shores.

ARISAEMA

Arisaema dracontium (Linnaeus) Schott - Green Dragon. 2n = 28, 56.

Rich or alluvial soil.

Arisaema triphyllum (Linnaeus) Schott - Jack-in-the-pulpit. 2n = 28, 36, 56.

Rich, damp to wet woods, boggy places. [A. triphyllum var. pusillum Peck;   A. triphyllum var. stewardsonii (Britton) Stevens ex Wiegand & Eames;  A. atrorubens (Aiton) Blume;  A. pusillum (Peck) Nash; A. stewardsonii Britton]

ARISAEMA hybrids

Arisaema dracontium (Linnaeus) Schott X A. triphyllum (Linnaeus) Schott - .

CALLA

Calla palustris Linnaeus - Wild Calla. 2n = 36, 60, 72.

Bogs, marshes, swampy woods, pond margins, shallow water.

ORONTIUM

Orontium aquaticum Linnaeus - Golden Club. 2n = 26.

Shallow water of ponds, sandy, muddy or sphagnous shores.

PELTANDRA

Peltandra virginica (Linnaeus) Schott - Arrow Arum. 2n = 112.

Shallow water or mud at margins of ponds and streams, swamps, bogs, damp meadows.

SYMPLOCARPUS

Symplocarpus foetidus (Linnaeus) Nuttall - Skunk Cabbage. 2n = 26, 60.

Swamps, damp thickets and woods, wet meadows, shores.

BUTOMUS

BUTOMUS UMBELLATUS Linnaeus - Flowering Rush. 2n = 16, 20, 24, 26, 30, 39.

Muddy shores and marshes. From Eurasia.

COMMELINA

COMMELINA COMMUNIS Linnaeus - Asiatic Dayflower. 2n = 16, 22, 28, 32, 36-90.

Waste places, roadsides, disturbed moist soil in shade. From eastern Asia. [C. COMMUNIS var. LUDENS (Miquel) C. B. Clarke]

COMMELINA DIFFUSA Burman f. - Creeping Dayflower. 2n = 18, 28-60.

Waste places. From the Old World.

TRADESCANTIA

TRADESCANTIA BRACTEATA Small - Sticky Spiderwort. 2n = 12, 18, 24.

Roadsides. From farther west.

Tradescantia ohiensis Rafinesque - Smooth Spiderwort. 2n = 12, 24.

Roadsides, waste places, thickets.

Tradescantia virginiana Linnaeus - Widow's Tears. 2n = 12, 18, 24, 24 + 6B.

Roadsides, waste places, thickets.

Tradescantia hybrids

Tradescantia ohiensis Rafinesque X T. SUBASPERA Ker Gawler - .

Tradescantia ohiensis Rafinesque X T. virginiana Linnaeus - .