PERITOMA SERRULATA (Pursh) de Candolle - Rocky Mountain Beeplant. 2n = 34, 60.
Waste places. From farther west. [CLEOME SERRULATA Pursh]
Polanisia dodecandra (Linnaeus) de Candolle subsp. dodecandra - Clammyweed. 2n = 20.
Sandy or gravelly shores. [P. graveolens Rafinesque]
POLANISIA DODECANDRA (Linnaeus) de Candolle subsp. TRACHYSPERMA (Torrey & A. Gray) H. H. Iltis - Sandyseed. 2n = 20.
Roadsides. From farther west and south. [P.TRACHYSPERMA Torrey & A. Gray]
TARENAYA HASSLERIANA (Chodat) H. H. Iltis - Pink-queen. 2n = 20.
Waste places, roadsides. From South America. [CLEOME HASSLERIANA Chodat; C. SPINOSA (Jacquin) Rafinesque - misapplied]
Floerkea proserpinacoides Willdenow - False Mermaid. 2n = 10.
Alluvial woods, usually wet.
RESEDA ALBA Linnaeus - White Mignonette. 2n = 40.
Waste places, roadsides. From Eurasia, northern Africa.
RESEDA LUTEA Linnaeus - Yellow Mignonette. 2n = 48.
Fields, roadsides, waste places. From Eurasia, northern Africa.
RESEDA LUTEOLA Linnaeus - Dyer’s Rocket. 2n = 24, 26.
Waste places. From Eurasia, northern Africa.
RESEDA ODORATA Linnaeus - Garden Mignonette. 2n = 12.
Waste places. From northern Africa.
POPULUS ALBA Linnaeus - White Poplar. 2n = 38.
Roadsides, waste places, field borders. From Eurasia.
Populus balsamifera Linnaeus - Balsam Poplar. 2n = 38.
Alluvial soils, streambanks, rich, low woods. [P. balsamifera var. subcordata Hylander]
Populus deltoides W. Bartram ex Marshall subsp. deltoides - Cottonwood. 2n = 38.
Streambanks, lake shores, floodplains.
Populus grandidentata Michaux - Bigtooth Aspen. 2n = 38.
Dry woods, recent burns, hillsides.
Populus heterophylla Linnaeus - Swamp Poplar. 2n = ?
Swamps, flooded bottomlands.
POPULUS NIGRA Linnaeus - Lombardy Poplar. 2n = 38, 57.
Roadsides, old house sites. From Eurasia. [P. NIGRA var. ITALICA Münchhausen]
POPULUS TREMULA Linnaeus - European Aspen. 2n = 38.
Waste places. From Eurasia.
Populus tremuloides Michaux - Quaking Aspen. 2n = 38, 57, 76.
Dry, open woods, recent burns and clearings, roadsides. [P. tremuloides var. magnifica Victorin]
Populus hybrids
Populus X canadensis Moench - .
[P. deltoides W. Bartram ex Marshall subsp. deltoides X P. NIGRA Linnaeus]
POPULUS X CANESCENS (Aiton) Smith - Gray Poplar.
[P. ALBA Linnaeus X P. TREMULA Linnaeus]
Populus X heimburgeri B. Boivin - .
[P. ALBA Linnaeus X P. tremuloides Michaux]
Populus X jackii Sargent - Balm-of-Gilead.
[P. balsamifera Linnaeus X P. deltoides W. Bartram ex Marshall subsp. deltoides; P. X gileadensis Rouleau]]
Populus X rouleauiana B. Boivin - .
[P. ALBA Linnaeus X P. grandidentata Michaux]
Populus X smithii B. Boivin - .
[P. grandidentata Michaux X P. tremuloides Michaux]
SALIX ALBA Linnaeus - White Willow. 2n = 76.
Low moist ground, along streams, shores, roadsides. From Eurasia. [S. ALBA var. CALVA Michaux; S. ALBA var. CALVA (Linnaeus) Stokes]
Salix amygdaloides Andersson - Peach-leaved Willow. 2n = 38.
Lake shores, low woods.
Salix arctophila Cockerell ex A. Heller - Northern Willow. 2n = 76.
Alpine meadows.
Salix argyrocarpa Andersson - Labrador Willow. 2n = 76.
Alpine or subalpine meadows.
SALIX ATROCINEREA Brotero - Rusty Willow. 2n = 76.
Marshes, wooded wetlands. From Europe.
SALIX BABYLONICA Linnaeus - Weeping Willow. 2n = 76.
Streambanks, shores, low grounds, near settlements. From Asia.
Salix bebbiana Sargent - Bebb Willow. 2n = 38.
Damp thickets, springy places.
Salix candida Flüggé ex Willdenow - Hoary Willow. 2n = 38.
Calcareous bogs and swamps.
SALIX CAPREA Linnaeus - Goat Willow. 2n = 38.
Thickets, roadsides. From Europe
SALIX CINEREA Linnaeus - Gray Willow. 2n = 76.
Sandy or gravelly, freshwater shores, wet thickets, moist waste places. From Eurasia.
Salix cordata Michaux - Dune Willow. 2n = 38.
Sandy or gravelly shores, beaches, dunes.
Salix discolor Muhlenberg - Pussy Willow. 2n = 76, 95, 114.
Damp thickets, freshwater shores, swamps. [S. discolor var. overi C. R. Ball]
SALIX ELAEAGNOS Scopoli - Olive Willow. 2n = 38.
Shores, rocky banks. From Europe. [S. INCANA Schrank]
Salix eriocephala Michaux - Wand Willow. 2n = 38.
Low thickets, pond shores, streambanks, swamps. [S. cordata Muhlenberg var. abrasa Fernald; S. rigida Muhlenberg; S. rigida var. angustata (Pursh) Fernald]
Salix herbacea Linnaeus - Dwarf Willow. 2n = 38.
Mossy rocks in alpine areas.
Salix humilis Marshall var. humilis - Prairie Willow. 2n = 38, 76.
Dry thickets, openings, dry, mixed woods. [S. humilis var. hyporhysa Fernald; S. humilis var. keweenawensis Farwell]
Salix humilis Marshall var. tristis (Aiton) Griggs - Dwarf Prairie Willow. 2n = ?
Dry barrens, open woods, swampy areas in woods. [S. humilis var. microphylla (Andersson) Fernald; S. occidentalis Walter]
Salix interior Rowlee - Sandbar Willow. 2n = 38.
Sandy or silty alluvial soil, river sandbars, streambanks, shores. [S. interior var. exterior Fernald; S. exigua Nuttall subsp. interior (Rowlee) Cronquist]
Salix lucida Muhlenberg - Shining Willow. 2n = 76.
Low grounds, freshwater shores, swamps. [S. lucida var. angustifolia (Andersson) Andersson; S. lucida var. intonsa Fernald]
Salix myricoides Muhlenberg - Blue-leaf Willow. 2n = ?
River thickets, gravelly shores, usually in calcareous soil. [S. glaucophylloides Fernald]
SALIX MYRSINIFOLIA/i> Salisbury - Dark-leaved Willow. 2n = 114.
Waste places, roadsides. From Eurasia.
Salix nigra Marshall - Black Willow. 2n = 38.
Streambanks, shores, rich, low, woods.
Salix pedicellaris Pursh - Bog Willow. 2n = 38, 57, 76.
Sphagnum bogs and swamps, sphagnous shores. [S. pedicellaris var. hypoglauca Fernald; S. pedicellaris var. tenuescens Fernald]
Salix pellita (Andersson) Bebb - Satin Willow. 2n = 38.
Streambanks, shores, rich, thickets.
SALIX PENTANDRA Linnaeus - Bay-leaved Willow. 2n = 38.
Roadsides, meadows, shores, waste places. From Eurasia.
Salix petiolaris Smith - Slender Willow. 2n = 38.
Meadows, river thickets, low, moist openings in deciduous woods. [S. gracilis Andersson; S. gracilis var. textoris Fernald; S. X subsericea (Andersson) C. K. Schneider]
Salix planifolia Pursh - Tea-leaved Willow. 2n = 57, 76.
Alpine, subalpine and boreal meadows, streambanks, wet thickets.
SALIX PURPUREA Linnaeus - Purple Osier. 2n = 38.
Low, wet ground. From Europe.
Salix pyrifolia Andersson - Balsam Willow. 2n = 38.
Bogs, swamps, damp thickets.
Salix sericea Marshall - Silky Willow. 2n = ?
River thickets, swamps. [S. coactilis Fernald]
Salix serissima (L. H. Bailey) Fernald - Autumn Willow. 2n = 76.
Calcareous marshes, bogs and swamps.
SALIX TRIANDRA Linnaeus - Almond Willow. 2n = 38 (44), 57, 88.
Streambanks, waste places. From Eurasia.
SALIX VIMINALIS Linnaeus - Osier. 2n = 38.
Streambanks, roadsides, freshwater shores. From Europe.
Salix hybrids
SALIX ALBA Linnaeus X S. petiolaris Smith - .
Salix bebbiana Sargent X S. eriocephala Michaux - .
Salix bebbiana Sargent X S. humilis Marshall var. humilis - .
Salix bebbiana Sargent X S. petiolaris Smith - .
Salix X besschelii B. Boivin - .
[S. bebbiana Sargent X S. discolor Muhlenberg]
Salix candida Flüggé ex Willdenow X S. pellita (Andersson) Bebb - .
SALIX CINEREA Linnaeus X S. eriocephala Michaux - .
Salix cordata Michaux X S. sericea Marshall - .
Salix X cryptodonta Fernald - .
[S. bebbiana Sargent X S. candida Flüggé ex Willdenow]
Salix discolor Muhlenberg X S. eriocephala Michaux - .
Salix discolor Muhlenberg X S. humilis Marshall var. humilis - .
Salix discolor Muhlenberg X S. petiolaris Smith - .
Salix discolor Muhlenberg X S. pyrifolia Andersson - .
SALIX X EHRHARTIANA G. Meyer - .
[S. ALBA Linnaeus X S. PENTANDRA Linnaeus]
Salix eriocephala Michaux X S. lucida Muhlenberg - .
Salix eriocephala Michaux X S. myricoides Muhlenberg - .
Salix eriocephala Michaux X S. pedicellaris Pursh - .
Salix eriocephala Michaux X S. petiolaris Smith - .
Salix eriocephala Michaux X S. sericea Marshall - .
SALIX X FRAGILIS Linnaeus - Crack Willow.
[S. ALBA Linnaeus X S. EUXINA I. V. Belyaeva; S. X RUBENS Schrank]
Salix X grayi C. K. Schneider - .
[S. argyrocarpa Andersson X S. planifolia Pursh]
Salix humilis Marshall var. humilis X S. petiolaris Smith - .
Salix humilis Marshall var. humilis X S. sericea Marshall - .
Salix humilis Marshall var. tristis (Aiton) Griggs X S. petiolaris Smith - .
Salix X jesupii Fernald - .
[S. ALBA Linnaeus X S. lucida Muhlenberg]
Salix lucida Muhlenberg X S. serissima (L.H. Bailey) Fernald - .
Salix X peasei Fernald - .
[S. herbacea Linnaeus X S. uva-ursi Pursh]
SALIX X PENDULINA Wenderoth - Weeping Willow.
[S. BABYLONICA Linnaeus X S. EUXINA I. V. Belyaeva]
Salix petiolaris Smith X S. sericea Marshall - .
Salix X rubella Bebb ex C. K. Schneider - .
[S. candida Flüggé ex Willdenow X S. eriocephala Michaux]
SALIX X SEPULCRALIS Simonkai - Weeping Willow.
[S. ALBA Linnaeus X S. BABYLONICA Linnaeus]
SALIX X SMITHIANA Willdenow - .
[S. CAPREA Linnaeus X S. VIMINALIS Linnaeus; S. X SERICANS Tausch]
TROPAEOLUM MAJUS Linnaeus - Garden Nasturtium. 2n = 28.
Waste places, roadsides. From South America.
TROPAEOLUM MINUS Linnaeus - Dwarf Nasturtium. 2n = ?
Roadsides near dwellings. From South America.
http://neatlas.org/Neatlas7/Neatlas7Fam-C-Z.html -- Revised: Nov. 17, 2011
Created by: Ray Angelo