Cyperaceae Cyperaceae Cyperaceae Cyperaceae Carex rufina Carex eleusinoides Carex nigra Carex aperta Carex haydenii Carex emoryi Carex interrupta Carex torta Carex
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thuillieri, and as a subspecies of C. nigra. For spontaneous interspecific hybrids between C. jacea and C. nigra the name C. ×moncktonii C. E. Britton
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Juglandaceae Juglans hindsii Juglans californica Juglans major var. major Juglans nigra Juglans cinerea Carya tomentosa Juglans microcarpa John Myers John Myers
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brevifolia Peck Picea mariana var. brevifolia (Peck) Rehder Picea nigra Aiton Pinus nigra Treatment appears in FNA Volume 2. Trees to 25m (often shrublike);
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have been shed. Because trees of the commonly cultivated, introduced P. nigra, P. simonii, and P. ×canadensis are rarely anything but staminate in North
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between P. fremontii and P. nigra known only from the type locality along Coyote Creek, San Jose, California, where P. nigra was the seed parent (J. E.
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with attenuate bases have been recognized as Quercus nigra var. tridentifera Sargent. Quercus nigra reportedly hybridizes with Q. falcata (= Q. ×garlandensis
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vallicola (Dudley) C. R. Ball Salix gooddingii var. variabilis C. R. Ball Salix nigra var. vallicola Dudley Treatment appears in FNA Volume 7. Treatment on page
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Kunth Nemexia cerulea Rafinesque Nemexia herbacea (Linnaeus) Small Nemexia nigra Rafinesque Smilax herbacea subsp. crispifolia Pennell Smilax herbacea var
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38. 1922. David F. Murray IllustratedEndemic Synonyms: Carex atrata var. nigra W. Boott Treatment appears in FNA Volume 23. Treatment on page 411. Mentioned
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Amygdaloideae tribeRosaceae tribe Amygdaleae genusPrunus speciesPrunus nigra Aiton Hort. Kew. 2: 165. 1789. Joseph R. Rohrer Common names: Canada plum prunier
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Betulaceae Betulaceae Betulaceae Betula alleghaniensis Betula papyrifera Betula nigra John Myers John Myers John Myers Casuarinaceae Betulaceae Casuarinaceae Betulaceae
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exotic species of Pinus have been reported as naturalized in the flora: P. nigra Arnott (Illinois) and P. thunbergiana Franco (P. thunbergii Parlatore) (Massachusetts)
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but usually linear or narrowly elliptic, as in S. nigra. The stipules are not as prominent as in S. nigra but are foliaceous on late leaves; it should be
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show a very close relationship to B. nigra, consistent with Linnaeus’s original description of this species as S. nigra. Baillargeon, G. 1986. Eine taxonomische
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naturalized populations are introgressed with J. nigra, since spontaneous hybridization between J. hindsii and J. nigra has been reported in areas where both species
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Koch Centaurea jacea subsp. ×pratensis (W. D. J. Koch) Celakovsky Centaurea nigra var. radiata de Candolle Centaurea thuillieri Treatment appears in FNA Volume
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distributed polymorphic species such as S. maritima, S. calceoliformis, and S. nigra. Much of the variation in these taxa appears to be due to environmental factors
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Chile. Mexico to central Chile. Salix humboldtiana is closely related to S. nigra in its generally narrow leaf blades, which are not glaucous abaxially. The
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regions, North America, Europe, and Asia. Species 10 (3 in the flora). Morus nigra Linnaeus has been reported in floras by various authors (J. K. Small 1903
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outside cultivation, but at least three other species, A. calcarata Roscoe, A. nigra (Gaertner) B. L. Burtt, and A. officinarum Hance, may persist for many years
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disjunct in the Danube basin of central Europe, represented there by Crataegus nigra. Some of the most diagnostic features of this section are the usually short
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Streptanthus niger Greene Bull. Torrey Bot. Club 13: 141. 1886 Synonyms: Euklisia nigra (Greene) Greene Streptanthus glandulosus var. niger (Greene) Munz Treatment
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checkerspot (Euphydryas phaeton) on C. glabra as well as sawfly larvae (Macrophya nigra and Tenthredo grandis), which are known from C. glabra and C. obliqua. One
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Salix lucida × S. nigra (S. ×schneideri B. Boivin) seems to be a rare intersubgeneric hybrid between tetraploid S. lucida and diploid S. nigra. It is known
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haydenii are ladder-fibrillose. Although often sympatric with C. stricta and C. nigra, no hybrids appear to be formed. None. None. window.propertiesFromHigher
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Juglandaceae Juglans hindsii Juglans californica Juglans major var. major Juglans nigra Juglans cinerea Carya tomentosa Juglans microcarpa John Myers John Myers
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and S. nigra. Hybrids with S. petiolaris have been reported (M. L. Fernald 1950) but no convincing specimens have been seen. Salix alba × S. nigra is an
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Betulaceae Betulaceae Betulaceae Betula alleghaniensis Betula papyrifera Betula nigra John Myers John Myers John Myers Casuarinaceae Betulaceae Casuarinaceae Betulaceae
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Cyperaceae Cyperaceae Cyperaceae Cyperaceae Carex rufina Carex eleusinoides Carex nigra Carex aperta Carex haydenii Carex emoryi Carex interrupta Carex torta Carex
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Eurasian P. nigra. That hybrid, P. ×rollandii Rouleau, which was originally thought to have involved P. ×canadensis, itself a hybrid offspring of P. nigra, has
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of Mexico to central Chile. Salix humboldtiana is closely related to S. nigra in its generally narrow leaf blades, which are not glaucous abaxially. The
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this variety only from Mexico. Intermediates between J. microcarpa and J. nigra (q.v.) are also known. None. None. window.propertiesFromHigherTaxa=[{"rank":"genus"
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Specimens intermediate between Juglans major and both J. microcarpa and J. nigra are discussed under the latter species. None. None. window.propertiesFro
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laevis (= Q. ×asheana Little), Q. marilandica (= Q. ×cravenensis Little), Q. nigra (= Q. ×caduca Trelease), and Q. phellos (E. J. Palmer 1948); with Q. pumila
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all of these names are ultimately based, is conspecific with that of P. nigra, and thus mollis and lanata are misapplied as infraspecific epithets of P
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highly brittle at base; pistillate adaxial nectaries oblong (swollen). Salix nigra 3 Branches yellow-brown to gray-brown; capsules 6-7 mm; stipules on early
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misidentified as C. nigrescens (or one or another of its synonyms) or as C. nigra. The elongate, often recurved, setose-ciliate tips of the phyllary appendages
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hybridize with C. aquatilis and has been observed to form hybrids with C. nigra. Standley, L. A. 1989. Taxonomic revision of the Carex stricta complex in
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from Greenland are based on plants of Carex subspathacea or hybrids of C. nigra with C. subspathacea or C. lyngbyei. Previous records from northern Northwest
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arkansana reportedly hybridizes with Q. incana (= Q. ×venulosa Ashe) and Q. nigra (D. M. Hunt 1986; W. H. Duncan and M. B. Duncan 1988). While agreeing that
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1970); with Q. arkansana, Q. inopina, Q. marilandica, Q. myrtifolia, Q. nigra, Q. phellos, Q. pumila, and Q. shumardii (D. M. Hunt 1989); and with Q. incana
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Trelease) and Q. incana (E. J. Palmer 1948); and with Q. marilandica, Q. nigra, Q. pagoda (= Q. ×ludoviciana Sargent), Q. palustris, Q. rubra, Q. shumardii
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Duncan 1988). It reportedly hybridizes with Q. falcata, Q. incana, and Q. nigra (H. A. Fowells 1965); with Q. hemisphaerica, Q. marilandica, Q. myrtifolia
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misidentified as Q. sinuata, which it superficially resembles, or as Q. nigra, a red oak with similarly shaped leaves. It is easily distinguished from
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×beaumontiana Sargent), and Q. marilandica (E. J. Palmer 1948); with Q. nigra, and Q. pagoda (S. A. Ware 1967; R. J. Jensen 1989); and with Q. phellos
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included S. interior (subg. Longifoliae) along with S. amygdaloides and S. nigra (placed here in subg. Protitea); 1b) included Asian S. chaenomelioides (subg
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Plants with young, expanding leaves sometimes are mistaken for Quercus nigra, a member of the red oak group. None. Quercus sinuata var. breviloba, Quercus
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America (Guatemala). Hybrids: Salix caroliniana forms natural hybrids with S. nigra. Hybrids with S. amygdaloides have been reported (N. M. Glatfelter 1898);
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Jepson 1909–1943, vol. 2). Hirschfeldia incana can be confused with Brassica nigra because both have fruits appressed to the rachis. The former is distinguished
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