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ambigua Aloina bifrons Aloina brevirostris Aloina hamulus Aloina rigida Aloina rigida var. rigida Andreaea Andreaea alpina Andreaea blyttii A cont. Andreaea

abietina Acaulon schimperianum Acroporium smallii Aloina hamulus Aloina rigida var. rigida Alsia californica Amblyodon dealbatus Amblystegium serpens Amphidium

bolanderi Cinna latifolia Corynephorus canescens D Dactylis glomerata Desmazeria rigida Desmazeria sicula Diarrhena americana Diarrhena obovata ... further results

petraea F Fingerhuthia africana H Hilaria jamesii Hilaria mutica Hilaria rigida L Lamarckia aurea Leptochloa chinensis Leptochloa chloridiformis Leptochloa

Insulosa, Sphagnum sect. Isocladus, Sphagnum sect. Polyclada, Sphagnum sect. Rigida, Sphagnum sect. Sphagnum, Sphagnum sect. Squarrosa, Sphagnum sect. Subsecunda

montevidensis, Sagittaria papillosa, Sagittaria platyphylla, Sagittaria rigida, Sagittaria sanfordii, Sagittaria secundifolia, Sagittaria subulata, Sagittaria

bigelovii, Artemisia cana, Artemisia nova, Artemisia pygmaea, Artemisia rigida, Artemisia rothrockii, Artemisia spiciformis, Artemisia tridentata, Artemisia

Aloina aloides, Aloina bifrons, Aloina brevirostris, Aloina hamulus, Aloina rigida (Müller Hal.) Kindberg Bih. Kongl. Svenska Venensk.-Akad. Handl. 6(19):

subfamilyPottiaceae subfam. Pottioideae genusAloina speciesAloina rigida varietyAloina rigida var. rigida Claudio Delgadillo M. Treatment appears in FNA Volume 27

Pinus pungens, Pinus quadrifolia, Pinus radiata, Pinus resinosa, Pinus rigida, Pinus sabiniana, Pinus serotina, Pinus strobiformis, Pinus strobus, Pinus

Solidago ohioensis, Solidago ptarmicoides, Solidago riddellii, Solidago rigida (House) Semple & Gandhi Sida 21: 756. 2004. John C. Semple, Rachel E. Cook

corrugata, Chorizanthe orcuttiana, Chorizanthe polygonoides, Chorizanthe rigida, Chorizanthe watsonii (Torrey) Torrey & A. Gray Proc. Amer. Acad. Arts 8:

Hypoxis curtissii, Hypoxis hirsuta, Hypoxis juncea, Hypoxis mexicana, Hypoxis rigida, Hypoxis sessilis, Hypoxis wrightii Linnaeus Syst. Nat. ed. 10, 2: 986,

berries.” J. W. Hardin (1964b) separated P. rigida from P. americana by the length of the raceme (2–12 cm in P. rigida, 5–30 cm in P. americana) and the thickness

subfamilyPottiaceae subfam. Pottioideae genusAloina speciesAloina rigida Show Lower Taxa Aloina rigida var. rigida (Hedwig) Limpricht Laubm. Deutschl. 1: 637. 1888,.

speciesSolidago rigida Show Lower Taxa Solidago rigida subsp. glabrata, Solidago rigida subsp. humilis, Solidago rigida subsp. rigida Linnaeus Sp. Pl.

reverchonii, Muhlenbergia richardsonis, Muhlenbergia rigens, Muhlenbergia rigida, Muhlenbergia schreberi, Muhlenbergia sericea, Muhlenbergia setifolia, Muhlenbergia

Show Lower Taxa Hilaria belangeri, Hilaria jamesii, Hilaria mutica, Hilaria rigida, Hilaria swallenii Kunth Mary E. Barkworth Treatment appears in FNA Volume

LAYOUT:treatment:TUOYAL familyPapaveraceae genusDendromecon speciesDendromecon rigida Bentham Trans. Hort. Soc. London, ser. 2, 1: 407. 1835. Curtis Clark Common

LAYOUT:treatment:TUOYAL familySphagnaceae genusSphagnum sectionSphagnum sect. Rigida Show Lower Taxa Sphagnum compactum, Sphagnum strictum (Lindberg) Limpricht

familyPapaveraceae genusDendromecon Show Lower Taxa Dendromecon harfordii, Dendromecon rigida Bentham Trans. Hort. Soc. London, ser. 2, 1: 407. 1835 [Greek dendron, tree

Carex concolor R. Brown Carex rigida Goodenough Carex rigida var. bigelowii (Torrey ex Schweinitz) Tuckerman Carex rigida var. concolor (R. Brown) Kükenthal

Fl. W. Calif. ed. 2, 387. 1911. Kerry A. Barringer Basionym: Adenostegia rigida Bentham in J. Lindley, Nat. Syst. Bot., 445. 1836 Treatment appears in FNA

genusDesmazeria speciesDesmazeria rigida (L.) Tutin Gordon C. Tucker Common names: Fern grass Synonyms: Scleropoa rigida Catapodium rigidum Treatment appears

2–3.4 mm; seeds 1.6–2.5 mm. Linum floridanum 1 Styles connate [subsect. Rigida]. > 14 14 Capsules dehiscing into 10, 1-seeded segments; sepals persistent

John Myers John Myers Alismataceae Alismataceae Alismataceae Sagittaria rigida Sagittaria brevirostra Sagittaria cuneata John Myers John Myers John Myers

Pooideae tribePoaceae tribe Poeae genusDesmazeria Show Lower Taxa Desmazeria rigida, Desmazeria sicula Dumort. Gordon C. Tucker Treatment appears in FNA Volume

LAYOUT:treatment:TUOYAL familyAlismataceae genusSagittaria speciesSagittaria rigida Pursh Flora Americae Septentrionalis 2: 397. 1814. Robert R. Haynes, C.

Flowering Mar–May. Habitat: Pine savannas and barrens (commonly with Pinus rigida, sometimes with Quercus marilandica and Q. ilicifolia), pine flatwoods,

Eckel Pottiaceae Aloina hamulus Patricia M. Eckel Pottiaceae Aloina rigida var. rigida Patricia M. Eckel ... further results

LAYOUT:treatment:TUOYAL familySphagnaceae genusSphagnum sectionSphagnum sect. Rigida speciesSphagnum compactum Lamarck & de Candolle Fl. Franç. ed. 3, 2: 443

subfamilyCaryophyllaceae subfam. Caryophylloideae genusVelezia Show Lower Taxa Velezia rigida Linnaeus Sp. Pl. 1: 332. 1753. , Gen. Pl. ed. 5, 155. 1754. Ronald L. Hartman

Bumelia lanuginosa var. rigida A. Gray in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 2(1): 68. 1886 Synonyms: Bumelia lanuginosa subsp. rigida (A. Gray) Cronquist

Castilleja raupii, Castilleja revealii, Castilleja rhexiifolia, Castilleja rigida, Castilleja rubicundula, Castilleja rubida, Castilleja rupicola, Castilleja

genusPhytolacca speciesPhytolacca americana varietyPhytolacca americana var. rigida (Small) Caulkins & R. E. Wyatt Bull. Torrey Bot. Club 117: 366. 1990. Mark

LAYOUT:treatment:TUOYAL familyLiliaceae genusHypoxis speciesHypoxis rigida Chapman Fl. South. U.S. ed. 2 repr. 1892, 696. 1892. Alan Herndon Endemic Treatment

genusHilaria speciesHilaria rigida (Thurb.) Benth. ex Scribn. Mary E. Barkworth Common names: Big galleta Synonyms: Pleuraphis rigida Treatment appears in FNA

species in the flora area include E. milii Des Moulins (crown-of-thorns), E. rigida M. Bieberstein, E. characias (Mediterranean spurge), E. marginata (snow-on-the-mountain)

subg. Amphietes sectionChorizanthe sect. Acanthogonum speciesChorizanthe rigida (Torrey) Torrey & A. Gray Proc. Amer. Acad. Arts 8: 198. 1870. James L.

1838 Synonyms: Aloina pilifera (De Notaris) H. A. Crum & Steere Aloina rigida var. pilifera (De Notaris) Limpricht Treatment appears in FNA Volume 27

James Henrickson Common names: Narrow-leaf Fendler-bush Synonyms: Fendlera rigida I. M. Johnston F. tamaulipana B. L. Turner Treatment appears in FNA Volume

present on San Clemente Island) have been called D. rigida var. rhamnoides (Greene) Munz [= D. rigida Bentham subsp. rhamnoides (Greene) Thorne] and are

Papaveraceae Papaveraceae Sanguinaria canadensis Stylophorum diphyllum Dendromecon rigida John Myers John Myers John Myers Papaveraceae Papaveraceae Papaveraceae

Synonyms: Atriplex collina Wooton & Standley Atriplex subconferta Rydberg Obione rigida Torrey & Frémont Treatment appears in FNA Volume 4. Mentioned on page 330

Torreya 22: 79. 1922. Adjoa Richardson Ahedor Endemic Basionym: Ambulia rigida var. microphylla Rafinesque Autik. Bot., 43. 1840 Synonyms: Mecardonia acuminata

Taschenb. Anfänger Wiss. Apothekerkunst 13: 41. 1802 Synonyms: Tetraphis rigida (Funck) Schwägrichen Tetrodontium ovatum Treatment appears in FNA Volume

genusSolidago sectionSolidago sect. Ptarmicoidei speciesSolidago rigida subspeciesSolidago rigida subsp. rigida John C. Semple, Rachel E. Cook Endemic Synonyms: Oligoneuron

genusSolidago sectionSolidago sect. Ptarmicoidei speciesSolidago rigida subspeciesSolidago rigida subsp. glabrata (E. L. Braun) S. B. Heard & Semple Canad. J

genusSolidago sectionSolidago sect. Ptarmicoidei speciesSolidago rigida subspeciesSolidago rigida subsp. humilis (Porter) S. B. Heard & Semple Canad. J. Bot

Anthemideae genusArtemisia subgenusArtemisia subg. Tridentatae speciesArtemisia rigida (Nuttall) A. Gray Proc. Amer. Acad. Arts 19: 49. 1883. Leila M. Shultz Common

subfamilyCaryophyllaceae subfam. Caryophylloideae genusVelezia speciesVelezia rigida Linnaeus Sp. Pl. 1: 332. 1753. Ronald L. Hartman, Richard K. Rabeler IntroducedIllustrated

Machaeranthera canescens var. aristata (Eastwood) B. L. Turner Machaeranthera rigida Greene Treatment appears in FNA Volume 20. Treatment on page 400. Mentioned

W. H. Brewer et al., Bot. California 1: 622. 1876 Synonyms: Adenostegia rigida var. brevibracteata (A. Gray) Greene C. rigidus var. brevibracteatus (A

[L. caparosa (Cambessèdes) H. Hara, L. nervosa (Poiret) H. Hara, and L. rigida (Miquel) Sandwith], or to the Caribbean and the southern United States [L

Chloridoideae tribePoaceae tribe Cynodonteae genusMuhlenbergia speciesMuhlenbergia rigida (Kunth) Trin. Paul M. Peterson Common names: Purple muhly Synonyms: Muhlenbergia

LAYOUT:treatment:TUOYAL familyPinaceae genusPinus speciesPinus rigida Miller Gard. Dict., ed. 8 Pinus no. 10. 1768. Robert Kral Common names: Pitch pine pin

LAYOUT:treatment:TUOYAL familyOrobanchaceae genusCastilleja speciesCastilleja rigida Eastwood Proc. Amer. Acad. Arts 44: 575. 1909. J. Mark Egger, Peter F. Zika

Salix mackenzieana var. macrogemma C. R. Ball Salix rigida var. mackenzieana (Hooker) Cronquist Salix rigida var. macrogemma (C. R. Ball) Cronquist Treatment

abrasa Fernald Salix missouriensis Bebb Salix rigida Muhlenberg Salix rigida var. angustata (Pursh) Fernald Salix rigida var. vestita (Andersson) C. R. Ball Treatment

filaginifolia var. pinetorum I. M. Johnston Corethrogyne filaginifolia var. rigida A. Gray Corethrogyne filaginifolia var. robusta Greene Corethrogyne filaginifolia

LAYOUT:treatment:TUOYAL familySphagnaceae genusSphagnum sectionSphagnum sect. Rigida speciesSphagnum strictum Sullivant Musc. Allegh., 201. 1846,. Cyrus B. McQueen†

Eckel Pottiaceae Aloina hamulus Patricia M. Eckel Pottiaceae Aloina rigida var. rigida Patricia M. Eckel ... further results

Common names: Pond pine Endemic Synonyms: Pinus rigida subsp. serotina (Michaux) R.T. Clausen Pinus rigida var. serotina (Michaux) Hoopes Treatment appears

Sep–Oct(–Nov). Habitat: Ultramafic outcrop barrens, in Quercus alba-Pinus rigida-Sporobolus heterolepis-Andropogon gerardii woodlands and grass-dominated

abaxial solid papillae near the leaf tip distinguish Aloina hamulus from A. rigida, which, in addition, has a strongly twisted and longer peristome. The ovoid-cylindric

Naczi, Charles T. Bryson IllustratedEndemic Synonyms: Carex amphibola var. rigida (L. H. Bailey) Fernald Treatment appears in FNA Volume 23. Treatment on

names: Bearbrush Endemic Synonyms: Garrya fremontii var. laxa Eastwood G. rigida Eastwood Treatment appears in FNA Volume 12. Treatment on page 553. Mentioned

disjuncta Sargent C. pruinosa var. brachypoda (Sargent) E. J. Palmer C. rigida Treatment appears in FNA Volume 9. Treatment on page 575. Mentioned on page

Carol., 214. 1788. John L. Strother Endemic Synonyms: Coreopsis major var. rigida (Nuttall) F. E. Boynton Coreopsis major var. stellata (Nuttall) B. L. Robinson

hordeoides grows in dry, rocky, often shallow soils, particularly in Artemisia rigida-Poa secunda communities, from eastern Washington and Idaho to northern California

var. watsonii (Bebb) Dorn Salix lutea var. watsonii (Bebb) Jepson Salix rigida var. watsonii (Bebb) Cronquist Treatment appears in FNA Volume 7. Treatment

2–4 subulate scales; central and south central Colorado. rigida: Grindelia robusta var. rigida; see camporum. robusta: Grindelia robusta; fide M. A. Lane

John Myers John Myers Alismataceae Alismataceae Alismataceae Sagittaria rigida Sagittaria brevirostra Sagittaria cuneata John Myers John Myers John Myers

Papaveraceae Papaveraceae Sanguinaria canadensis Stylophorum diphyllum Dendromecon rigida John Myers John Myers John Myers Papaveraceae Papaveraceae Papaveraceae

Habitat: Open areas on sandy glacial deposits, often in pine barrens (Pinus rigida) Elevation: 10–100 m Generated Map Legacy Map Conn., Fla., Mass., N.J.,

straight awn; achenes 3-gonous; warm deserts of sw North America Chorizanthe rigida 6 Plants prostrate; involucres campanulate, anterior tooth 1.8-2 mm with

with a reduced lamina; forms with larger laminae may be confused with A. rigida, but the synoicous condition and the cylindric capsules with a conical operculum

inaliena (Hooker & Arnott) O. E. Schulz Guillenia lasiophylla M. E. Jones Guillenia rigida Harvey ex Torrey Microsisymbrium lasiophyllum (Hooker & Arnott) K. Brandegee

Sheldon P. gracilis var. permollis (Rydberg) C. L. Hitchcock P. gracilis var. rigida S. Watson P. indiges P. jucunda P. nuttallii P. nuttallii var. glabrata Lehmann

scrubby woodlands, often associated with Pinus clausa, P. palustris, P. rigida and xerophytic species of Quercus and Carya Elevation: 10–200 m Generated

grazing value but low palatability. It is usually less pubescent than H. rigida, the difference being most marked on the lower cauline nodes. None. None

is a typical member of sect. Ptarmicoidei. The species hybridizes with S. rigida, S. ohioensis, S. riddellii, and perhaps other goldenrods. It is not known

suggested that M. reverchonii and M. lindheimeri were its parents, but M. rigida seems to be another plausible possibility. None. None. window.propertie

differentiate in fruit. The author has not come across C. gattingeri var. rigida E. J. Palmer, from Indiana and Kentucky, which apparently differs from the

coastal plain north of Delaware Bay. Pine-oak forests dominated by Pinus rigida, Quercus stellata, and Q. marilandica dominate the most favorable sites

vegetation is conspicuously dominated by various species of Pinus, especially P. rigida to the north and P. palustris and P. elliottii to the south. The extensive