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brevipilis, Calamovilfa curtissii, Calamovilfa gigantea, Calamovilfa longifolia Hack. John W. Thieret Treatment appears in FNA Volume 25. Treatment on page 140

Leptopogon speciesAndropogon gyrans varietyAndropogon gyrans var. stenophyllus (Hack.) C.S. Campb. Christopher S. Campbell Synonyms: Andropogon perangustatus

Leptopogon speciesAndropogon ternarius varietyAndropogon ternarius var. cabanisii (Hack.) Fernald & Griscom Christopher S. Campbell Treatment appears in FNA Volume

genusAndropogon sectionAndropogon sect. Leptopogon speciesAndropogon liebmannii Hack. Christopher S. Campbell Common names: Liebmann's bluestem Mohr's bluestem

genusAndropogon sectionAndropogon sect. Andropogon speciesAndropogon hallii Hack. Christopher S. Campbell Common names: Sand bluestem Synonyms: Andropogon

Leptopogon speciesAndropogon virginicus varietyAndropogon virginicus var. glaucus Hack. Christopher S. Campbell Synonyms: Andropogon callipes Treatment appears

genusBlepharidachne Show Lower Taxa Blepharidachne bigelovii, Blepharidachne kingii Hack. Jesus Valdes-Reyna Treatment appears in FNA Volume 25. Treatment on page

speciesAndropogon glomeratus varietyAndropogon glomeratus var. hirsutior (Hack.) C. Mohr Christopher S. Campbell Treatment appears in FNA Volume 25. Treatment

genusAndropogon sectionAndropogon sect. Leptopogon speciesAndropogon longiberbis Hack. Christopher S. Campbell Common names: Hairy bluestem Treatment appears in

tribePoaceae tribe Poeae genusScribneria Show Lower Taxa Scribneria bolanderi Hack. James P. Smith, Jr. Treatment appears in FNA Volume 24. Treatment on page

genusFestuca subgenusFestuca subg. Montanae Show Lower Taxa Festuca sect. Texanae (Hack.) Nyman Stephen J. Darbyshire, Leon E. Pavlickf Treatment appears in FNA

tribePoaceae tribe Poeae genusScribneria speciesScribneria bolanderi (Thurb.) Hack James P. Smith, Jr. Common names: Scribner grass Treatment appears in FNA

Panicoideae tribePoaceae tribe Paniceae genusCenchrus speciesCenchrus longispinus (Hack.) Fernald Michael T. Stieber, J.K. Wipff Common names: Mat sandbur Longspine

tribePoaceae tribe Cynodonteae genusLeptochloa speciesLeptochloa chloridiformis (Hack.) Parodi Neil Snow Common names: Argentine sprangletop Introduced Treatment

tribePoaceae tribe Cynodonteae genusDactyloctenium speciesDactyloctenium geminatum Hack. Stephan L. Hatch Common names: Double combgrass Treatment appears in FNA

Cynodonteae genusBlepharidachne speciesBlepharidachne kingii (S. Watson) Hack. Jesus Valdes-Reyna Common names: King’s eyelash grass Endemic Treatment

tribePoaceae tribe Meliceae genusSchizachne Show Lower Taxa Schizachne purpurascens Hack. Jacques Cayouette, Stephen J. Darbyshire Treatment appears in FNA Volume

tribePoaceae tribe Cynodonteae genusWillkommia Show Lower Taxa Willkommia texana Hack. J.K. Wipff Treatment appears in FNA Volume 25. Treatment on page 227. Plants

tribePoaceae tribe Andropogoneae genusPolytrias Show Lower Taxa Polytrias amaura Hack. Mary E. Barkworth Treatment appears in FNA Volume 25. Treatment on page

Cynodonteae genusBlepharidachne speciesBlepharidachne bigelovii (S. Watson) Hack. Jesus Valdes-Reyna Common names: Bigelow’s desertgrass Treatment appears

subgenusFestuca subg. Festuca sectionFestuca sect. Festuca speciesFestuca dasyclada Hack. ex Beal Stephen J. Darbyshire, Leon E. Pavlickf Common names: Open fescue Intermountain

tribePoaceae tribe Paniceae genusUrochloa speciesUrochloa mosambicensis (Hack.) Dandy J.K. Wipff, Rahmona A. Thompson Common names: Sabi grass Treatment

tribe Andropogoneae genusEremochloa speciesEremochloa ophiuroides (Munro) Hack. John W. Thieret Common names: Centipede grass Introduced Treatment appears

Panicoideae tribePoaceae tribe Paniceae genusUrochloa speciesUrochloa arrecta (Hack. ex T. Durand & Schinz) Morrone & Zuloaga J.K. Wipff, Rahmona A. Thompson

subgenusFestuca subg. Festuca sectionFestuca sect. Festuca speciesFestuca trachyphylla (Hack.) Krajina Stephen J. Darbyshire, Leon E. Pavlickf Common names: Hard fescue Sheep

cinerea Vill., F. drymeia Mert. & W.D.J. Koch, F. elegans Boiss., F. gautbieri (Hack.) K. Richt., F. glauca Vill., F. kasmiriana Stapf, F. mairei St.-Yves, F

tribePoaceae tribe Stipeae genusAmelichloa speciesAmelichloa clandestina (Hack.) Arriaga & Barkworth Mirta O. Arriaga Common names: Mexican needlegrass

tribePoaceae tribe Andropogoneae genusThemeda speciesThemeda arguens (L.) Hack. Mary E. Barkworth Common names: Christmas grass Synonyms: Themeda frondosa

Stipeae genusPiptochaetium speciesPiptochaetium stipoides (Trin. & Rupr.) Hack. Mary E. Barkworth Common names: Stipoid ricegrass Synonyms: Piptochaetium

tribePoaceae tribe Andropogoneae genusBothriochloa speciesBothriochloa wrightii (Hack.) Henrard Kelly W. Allred Common names: Wright's bluestem Treatment appears

tribe Andropogoneae genusMiscanthus speciesMiscanthus nepalensis (Trin.) Hack. Mary E. Barkworth Common names: Himalaya fairygrass Treatment appears in

speciesSchizachyrium scoparium varietySchizachyrium scoparium var. divergens (Hack.) Gould J.K. Wipff Common names: Pinehill bluestem Synonyms: Schizachyrium

tribePoaceae tribe Andropogoneae genusElionurus speciesElionurus barbiculmis Hack. Mary E. Barkworth Common names: Woolyspike balsamscale Synonyms: Elionurus

tribePoaceae tribe Andropogoneae genusSchizachyrium speciesSchizachyrium cirratum (Hack.) Wooton & Standl. J.K. Wipff Common names: Texas schizachyrium Texas beardgrass

tribePoaceae tribe Stipeae genusNassella speciesNassella trichotoma (Nees) Hack. ex Arechav. Mary E. Barkworth Common names: Serrated tussockgrass Yass tussockgrass

sect. Festuca speciesFestuca rubra subspeciesFestuca rubra subsp. pruinosa (Hack.) Piper Stephen J. Darbyshire, Leon E. Pavlickf Common names: Rock fescue Fétuque

There is one species native to the Flora region; the second, U. pittieri Hack., extends from northern Mexico to Ecuador, primarily along the Pacific coast

Grelen, H.E. 1974. Pinehills bluestem, Andropogon scoparius Anderss. ex Hack., an anomaly of the A. scoparius complex. Amer. Midi. Naturalist 91:438-144

tribePoaceae tribe Cynodonteae genusCathestecum speciesCathestecum erectum Vasey & Hack. Mary E. Barkworth Common names: False grama Treatment appears in FNA Volume

sect. Festuca speciesFestuca rubra subspeciesFestuca rubra subsp. arctica (Hack.) Govor. Stephen J. Darbyshire, Leon E. Pavlickf Common names: Arctic red

glaucous leaves and spikelets, sometimes treated as F. rubra var. juncea (Hack.) K. Richt., (2) native plants along the James Bay and Hudson Bay shore that

sandy areas. It is sold in the North American seed trade as F. pseudovina Hack, ex Wiesb., and has been collected at a few scattered localities in the Flora

that intergrades morphologically with the primarily cleistogamous S. trinii (Hack.) Renvoize in Central America. The combination of long callus hairs and straight

is an enigmatic species, often treated as Sporobolus brasiliensis (Raddi) Hack., which it resembles in its chromosome base number of x = 9 and caryopsis

the edge of the Grand Canyon (1950–2300 m) in Coconino County, and in the Hack Canyon area (1300–1500 m) of eastern Mohave County. None. None. window.p

the southern and central United States. A similar species, B. decipiens (Hack.) C.E. Hubb., has been grown at some experiment stations in the United States