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Lamarckia aurea Leptochloa chinensis Leptochloa chloridiformis Leptochloa dubia Leptochloa fusca subsp. fascicularis Leptochloa fusca subsp. fusca Leptochloa

Show Lower Taxa Leptochloa chinensis, Leptochloa chloridiformis, Leptochloa dubia, Leptochloa fusca, Leptochloa nealleyi, Leptochloa panicea, Leptochloa panicoides

columbiae, Rorippa crystallina, Rorippa curvipes, Rorippa curvisiliqua, Rorippa dubia, Rorippa indica, Rorippa microtitis, Rorippa palustris, Rorippa ramosa, Rorippa

genusCastilleja speciesCastilleja angustifolia varietyCastilleja angustifolia var. dubia A. Nelson Bull. Torrey Bot. Club 29: 404. 1902. J. Mark Egger, Peter F. Zika

These reports should be referred to L. dubia, since the specimens examined have the two fertile stamens of L. dubia instead of the four of L. procumbens

cuspidata, Muhlenbergia depauperata, Muhlenbergia diversiglumis, Muhlenbergia dubia, Muhlenbergia dumosa, Muhlenbergia elongata, Muhlenbergia eludens, Muhlenbergia

Both C. angustifolia var. dubia and C. chromosa are accepted here. See additional comments under 3b. C. angustifolia var. dubia and 15. C. chromosa. None

anagallidea (Michaux) Pennell L. dubia var. anagallidea (Michaux) Cooperrider L. dubia var. inundata (Pennell) Pennell L. dubia var. riparia (Rafinesque) Fernald

LAYOUT:treatment:TUOYAL familyPontederiaceae genusHeteranthera Show Lower Taxa Heteranthera dubia, Heteranthera limosa, Heteranthera mexicana, Heteranthera multiflora, Heteranthera

e subfam. Caryophylloideae genusPetrorhagia Show Lower Taxa Petrorhagia dubia, Petrorhagia nanteuilii, Petrorhagia prolifera, Petrorhagia saxifraga (Seringe)

LAYOUT:treatment:TUOYAL familyPontederiaceae genusHeteranthera speciesHeteranthera dubia (Jacquin) MacMillan Metasp. Minnesota Valley, 138. 1892. Charles N. Horn

LAYOUT:treatment:TUOYAL familyCucurbitaceae genusThladiantha speciesThladiantha dubia Bunge Enum. Pl. China Bor., 29. 1833. Guy L. Nesom Common names: Manchu tuber

Chloridoideae tribePoaceae tribe Cynodonteae genusLeptochloa speciesLeptochloa dubia (Kunth) Nees Neil Snow Common names: Green sprangletop Treatment appears

flowers), Lagenaria siceraria (for its bottlelike gourds), and Thladiantha dubia (golden creeper, for its large, golden-yellow flowers). Species employed

knapweed centaurée noirâtre Introduced Synonyms: Centaurea dubia subsp. nigrescens (Willdenow) Hayek Centaurea dubia subsp. vochinensis (Bernhardi ex Reichenbach) Hayek

in identifying Ventenata dubia (Poaceae). Madrono 32:120-121 Old, R.R. and R.H. Callihan. 1986. Distribution of Ventenata dubia in Idaho. Idaho Weed Control

LAYOUT:treatment:TUOYAL familyCucurbitaceae genusThladiantha Show Lower Taxa Thladiantha dubia Bunge Enum. Pl. China Bor., 29. 1833. Guy L. Nesom Common names: Golden creeper

Small P. quinquefolia var. vitacea (Knerr) L. H. Bailey P. vitacea var. dubia Rehder P. vitacea var. laciniata (Planchon) Rehder P. vitacea var. macrophylla (Lauche)

1903. Dawn Frame Endemic Basionym: Helonias dubia Michaux Fl. Bor.-Amer. 1: 213. 1803 Synonyms: Sabadilla dubia (Michaux) Kuntze Treatment appears in FNA

Pleurothallis gelida Polystachya concreta Monochoria vaginalis Heteranthera dubia John Myers Barbara Alongi Barbara Alongi Barbara Alongi John Myers John Myers

angustifolia Aiton Myrica cerifera var. arborescens Castiglioni Myrica cerifera var. dubia A. Chevalier Myrica cerifera var. pumila Michaux Myrica pumila Myrica pusilla

taxon Illustrator ⠉ Linderniaceae Linderniaceae Linderniaceae Lindernia dubia Torenia fournieri Micranthemum umbrosum Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey

Toivonen IllustratedEndemic Synonyms: Carex canescens var. dubia L. H. Bailey Carex heleonastes var. dubia (L. H. Bailey) B. Boivin Treatment appears in FNA Volume

subfamilyCaryophyllaceae subfam. Caryophylloideae genusPetrorhagia speciesPetrorhagia dubia (Rafinesque) G. López & Romo Anales Jard. Bot. Madrid 45: 363. 1988. Richard

subfam. Pooideae tribePoaceae tribe Poeae genusVentenata speciesVentenata dubia (Leers) Coss. William J. Crins Common names: Ventenata North-africa grass

Braya purpurascens (R. Brown) Bunge ex Ledebour Braya purpurascens var. dubia (R. Brown) O. E. Schulz Platypetalum dubium R. Brown Treatment appears in

familyBrassicaceae tribeBrassicaceae tribe Cardamineae genusRorippa speciesRorippa dubia (Persoon) H. Hara J. Jap. Bot. 30: 196. 1955. Ihsan A. Al-Shehbaz Basionym:

Chloridoideae tribePoaceae tribe Cynodonteae genusMuhlenbergia speciesMuhlenbergia dubia E. Fourn. Paul M. Peterson Common names: Pine muhly Treatment appears in

Common names: Anomalous mouse-ear chickweed Introduced Basionym: Stellaria dubia Bastard Suppl. Fl. Maine-et-Loire, 24. 1812 Synonyms: Cerastium anomalum Waldstein

possibly representing hybridization or contact with the more eastern var. dubia, which usually has yellow inflorescences. Plants of the western slope of

highway construction in Virginia (see 34.2. Petrorhagia prolifera and 34.4. P. dubia for similar cases). The first collection from the western United States was

taxon Illustrator ⠉ Linderniaceae Linderniaceae Linderniaceae Lindernia dubia Torenia fournieri Micranthemum umbrosum Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey

Cucurbitaceae Cucurbitaceae Momordica charantia subsp. charantia Thladiantha dubia Ecballium elaterium Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey

Pleurothallis gelida Polystachya concreta Monochoria vaginalis Heteranthera dubia John Myers Barbara Alongi Barbara Alongi Barbara Alongi John Myers John Myers

pilosa (Aiton) Britton Liatris graminifolia Willdenow Liatris graminifolia var. dubia (W. P. C. Barton) A. Gray Liatris graminifolia var. lasia Fernald & Griscom

1965; J. D. Sauer 1967b; V. Srivastava et al. 1977). Amaranthus nothosect. Dubia Mosyakin & K. R. Robertson (A. sect. Amaranthus × A. sect. Centrusa), was

the Centaurea jacea complex: C. jacea, C. nigra, C. nigrescens and/or C. dubia (under several different names), and C. ×pratensis, the last a collective

Castilleja chromosa is sometimes confused with 3b. C. angustifolia var. dubia (see discussion there). Castilleja chromosa retains its distinctive morphology

taxon Illustrator ⠉ Linderniaceae Linderniaceae Linderniaceae Lindernia dubia Torenia fournieri Micranthemum umbrosum Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey

be an alloploid derived through hybridization between P. prolifera and P. dubia; recent attempts at crossing the latter two have failed (S. M. Thomas and

available commercially as an ornamental. Muhlenbergia rigens is similar to M. dubia, but differs in having tighter, spikelike panicles, shorter ligules, yellow

tridentata var. glandulosa have been given the names Cowania mexicana var. dubia Brandegee and C. alba Goodding. Introgression with P. stansburyana occurs

typical greenish white plants. Occasional hybrids between C. angustifolia var. dubia and C. sessiliflora are known from northeastern Wyoming. None. None. window