Chi Thùa
Chi Thùa, tên khoa học Agave, là một chi thực vật có hoa trong họ Asparagaceae.

Danh sách loài
Theo tài liệu the World Checklist of Selected Plant Families, vào tháng 12 năm 2012, ghi nhận được 194 loài thuộc chi Agave.

Agave acicularis Trel.
Agave acklinicola Trel.
Agave × ajoensis W.C.Hodgs. = A. deserti var. simplex × A. schottii var. schottii
Agave aktites Gentry
Agave albescens Trel.
Agave albomarginata Gentry
Agave albopilosa I.Cabral
Agave americana L. – American Agave, American Century Plant, Century Plant, Maguey americano
Agave americana subsp. americana
Agave americana subsp. protamericana Gentry
Agave angustiarum Trel.
Agave anomala Trel.
Agave antillarum Descourt.
Agave applanata Lem. ex Jacobi
Agave arcedianoensis Cházaro
Agave × arizonica Gentry & J.H.Weber = A. chrysantha × A. toumeyana var. bella
Agave arubensis Hummelinck
Agave asperrima Jacobi – Maguey spero, Rough Century Plant
Agave asperrima subsp. asperrima
Agave asperrima subsp. maderensis (Gentry) B.Ullrich
Agave asperrima subsp. potosiensis (Gentry) B.Ullrich
Agave asperrima subsp. zarcensis (Gentry) B.Ullrich
Agave atrovirens Karw. ex Salm-Dyck
Agave attenuata Salm-Dyck – Swan's Neck Agave, Dragon Tree Agave, Foxtail Agave
Agave attenuata subsp. attenuata
Agave attenuata subsp. dentata (J.Verschaff.) B.Ullrich
Agave aurea Brandegee
Agave avellanidens Trel.

Agave bahamana Trel.
Agave beauleriana Jacobi
Agave boldinghiana Trel.
Agave boscii (Hornem.) ined.
Agave bovicornuta Gentry – Cowhorn Agave
Agave braceana Trel.
Agave bracteosa S.Watson ex Engelm. – Squid Agave
Agave brevipetala Trel.
Agave brevispina Trel.
Agave brittoniana Trel.

Agave cacozela Trel.
Agave cajalbanensis A.Álvarez
Agave calodonta A.Berger
Agave cantala (Haw.) Roxb. ex Salm-Dyck – Cantala, Maguey de la India
Agave capensis Gentry
Agave caribaeicola Trel.
Agave cerulata Trel.
Agave cerulata subsp. cerulata
Agave cerulata subsp. dentiens (Trel.) Gentry
Agave cerulata subsp. nelsonii (Trel.) Gentry
Agave cerulata subsp. subcerulata Gentry
Agave chazaroi A.Vázquez & O.M.Valencia
Agave chiapensis Jacobi
Agave chrysantha Peebles – Golden Flowered Agave, Golden Flower Century Plant
Agave chrysoglossa I.M.Johnst.
Agave cocui Trel.
Agave collina Greenm.
Agave colorata Gentry – Mescal ceniza
Agave congesta Gentry
Agave convallis Trel.
Agave cundinamarcensis A.Berger
Agave cupreata Trel. & A.Berger

Agave dasylirioides Jacobi & C.D.Bouché
Agave datylio F.A.C.Weber
Agave demeesteriana Jacobi
Agave decipiens Baker – False Sisal
Agave delamateri W.C.Hodgs. & Slauson
Agave deserti Engelm. – Desert Century Plant, Desert Agave, Maguey de Desierto
Agave difformis A.Berger
Agave durangensis Gentry
Agave dussiana Trel.
Agave eggersiana Trel. – Eggers' Century Plant, St. Croix Agave
Agave ehrenbergii Jacobi
Agave ellemeetiana Jacobi
Agave ensifera Jacobi
Agave evadens Trel.
Agave felgeri Gentry – Mescalito
Agave filifera Salm-Dyck – Thread-leaf Agave
Agave flexispina Trel.
Agave fortiflora Gentry
Agave fourcroydes Lem. – Henequen, Maguey Henequen, Mexican Sisal
Agave funkiana K.Koch & C.D.Bouché – Ixtle de Jaumav

Agave garciae-mendozae Galván & L.Hern.
Agave gentryi B.Ullrich
Agave ghiesbreghtii Lem. ex Jacobi
Agave gigantensis Gentry
Agave gilbertii A.Berger
Agave × glomeruliflora (Engelm.) A.Berger = A. havardiana × A. lechuguilla
Agave gracilipes Trel. – Maguey de pastizal, Slimfoot Century Plant
Agave grisea Trel.
Agave guadalajarana Trel. – Maguey chato
Agave guiengola Gentry
Agave gypsophila Gentry
Agave harrisii Trel.
Agave havardiana Trel. – Havard's Century Plant, Chisos Agave, Maguey de Havard
Agave hiemiflora Gentry
Agave hookeri Jacobi
Agave horrida Lem. ex Jacobi
Agave horrida subsp. horrida
Agave horrida subsp. perotensis B.Ullrich
Agave hurteri Trel.
Agave impressa Gentry
Agave inaequidens K.Koch
Agave inaequidens subsp. barrancensis Gentry
Agave inaequidens subsp. inaequidens
Agave inaguensis Trel.
Agave indagatorum Trel.
Agave intermixta Trel.
Agave isthmensis A.García-Mend. & F.Palma
Agave jaiboli Gentry
Agave jarucoensis A.Álvarez

Agave karatto Mill.
Agave karwinskii Zucc.
Agave kerchovei Lem.
Agave kewensis Jacobi
Agave lagunae Trel.
Agave lechuguilla Torr. – Agave lechuguilla, Lecheguilla, Lechuguilla, Maguey lechuguilla
Agave longipes Trel.
Agave lopantha Schiede ex Kunth
Agave macroacantha Zucc.
Agave mapisaga Trel.
Agave margaritae Brandegee
Agave marmorata Roezl
Agave maximiliana Baker
Agave mckelveyana Gentry – Mckelvey Agave, McKelvey's Century Plant
Agave microceps (Kimnach) A.Vázquez & Cházaro
Agave millspaughii Trel.
Agave minor Proctor
Agave missionum Trel. – Corita

Agave mitis Mart.
Agave montana Villarreal
Agave montium-sancticaroli García-Mend.
Agave moranii Gentry
Agave multifilifera Gentry
Agave murpheyi Gibson – Maguey Bandeado, Murphey Agave, Murphey's Century Plant, Hohokam Agave
Agave nashii Trel.
Agave nayaritensis Gentry
Agave neglecta Small – Wild Century Plant
Agave nickelsiae Rol.-Goss.
Agave nizandensis Cutak – Dwarf Octopus Agave
Agave nuusaviorum García-Mend.
Agave nuusaviorum subsp. deltoidea García-Mend.
Agave nuusaviorum subsp. nuusaviorum
Agave obscura Schiede ex Schltdl.
Agave ocahui Gentry
Agave ornithobroma Gentry – Maguey pajarito
Agave oroensis Gentry
Agave ortgiesiana (Baker) Trel. in L.H.Bailey
Agave ovatifolia G.D.Starr & Villarreal
Agave pachycentra Trel.
Agave palmeri Engelm. – Maguey de tlalcoyote, Palmer Agave, Palmer Century Plant, Palmer's Century Plant

Agave papyrocarpa Trel.
Agave papyrocarpa subsp. macrocarpa A.Álvarez
Agave papyrocarpa subsp. papyrocarpa
Agave parrasana A.Berger
Agave parryi Engelm. – Mezcal yapavai, Parry Agave, Parry's Agave
Agave parryi subsp. neomexicana (Wooton & Standl.) B.Ullrich
Agave parryi subsp. parryi
Agave parvidentata Trel.
Agave parviflora Torr. in W.H.Emory – Maguey sbari, Smallflower Agave, Smallflower Century Plant, Little Princess Agave
Agave parviflora subsp. densiflora G.D.Starr & T.Van Devender
Agave parviflora subsp. flexiflora Gentry
Agave parviflora subsp. parviflora
Agave peacockii Croucher
Agave pelona Gentry – Bald Agave
Agave pendula Schnittsp.
Agave petiolata Trel.
Agave petrophila A.García-Mend. & E.Martínez
Agave phillipsiana W.C.Hodgs.
Agave pintilla S.González
Agave polianthiflora Gentry
Agave polyacantha Haw.
Agave potatorum Zucc. – Drunkard Agave
Agave potreriana Trel.
Agave promontorii Trel.
Agave × pumila De Smet ex Baker = A. asperrima × A. nickelsiae
Agave rhodacantha Trel.
Agave rovelliana Tod.
Agave rutteniae Hummelinck
Agave rzedowskiana P.Carrillo

Agave salmiana Otto ex Salm-Dyck – Pulque, Maguey, Maguey de montaña
Agave salmiana subsp. crassispina (Trel.) Gentry
Agave salmiana subsp. salmiana
Agave scaposa Gentry
Agave schidigera Lem.
Agave schneideriana A.Berger
Agave schottii Engelm. – Maguey puercoesp n, Schott Agave, Schott's Century Plant, Shindagger, Leather Agave
Agave sebastiana Greene
Agave seemanniana Jacobi
Agave shaferi Trel.
Agave shawii Engelm. – Coastal Agave, Maguey primavera
Agave shawii subsp. goldmaniana (Trel.) Gentry
Agave shawii subsp. shawii
Agave shrevei Gentry
Agave shrevei subsp. magna Gentry
Agave shrevei subsp. matapensis Gentry
Agave shrevei subsp. shrevei
Agave sisalana Perrine – Maguey de Sisal, Sisal, Sisal Hemp
Agave sobolifera Houtt.
Agave sobria Brandegee
Agave sobria subsp. frailensis Gentry
Agave sobria subsp. roseana (Trel.) Gentry
Agave sobria subsp. sobria
Agave spicata Cav.
Agave striata Zucc.
Agave striata subsp. falcata (Engelm.) Gentry
Agave striata subsp. striata
Agave stricta Salm-Dyck
Agave stringens Trel.
Agave subsimplex Trel.

Agave tecta Trel.
Agave tenuifolia Zamudio & E.Sánchez
Agave tequilana F.A.C.Weber – Mezcal azul tequilero, Tequila Agave, Weber Blue Agave
Agave thomasiae Trel.
Agave titanota Gentry
Agave toumeyana Trel. – Toumey Agave, Toumey's Century Plant
Agave triangularis Jacobi
Agave tubulata Trel.
Agave turneri R.H.Webb & Salazar-Ceseña

Agave underwoodii Trel.
Agave univittata Haw.
Agave utahensis Engelm. in S.Watson – Utah Agave
Agave utahensis subsp. kaibabensis (McKelvey) Gentry
Agave utahensis subsp. utahensis
Agave valenciana Cházaro & A.Vázquez
Agave vazquezgarciae Cházaro & J.A.Lomelí
Agave vera-cruz Mill.
Agave vicina Trel.
Agave victoriae-reginae T.Moore – Queen Victoria's Agave
Agave victoriae-reginae subsp. swobodae Halda
Agave victoriae-reginae subsp. victoriae-reginae
Agave vilmoriniana A.Berger – Octopus Agave
Agave vivipara L.
Agave vizcainoensis Gentry
Agave wallisii Jacobi
Agave warelliana Baker
Agave weberi J.F.Cels ex J.Poiss. – Maguey liso, Weber's Century Plant, Weber Agave
Agave wercklei F.A.C.Weber ex Wercklé
Agave wildingii Tod.
Agave wocomahi Gentry
Agave xylonacantha Salm-Dyck – Century Plant, Maguey diente de tiburn
Agave zebra Gentry

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