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"
- "Agave acklinicola"
- "Agave × ajoensis" = "A. deserti" var. "simplex" × "A. schottii" var. "schottii"
- "Agave aktites"
- "Agave albescens"
- "Agave albomarginata"
- "Agave albopilosa"
- "Agave americana" – American Agave, American Century Plant, Century Plant, Maguey americano
- "Agave americana" subsp. "americana"
- "Agave americana" subsp. "protamericana"
- "Agave angustiarum"
- "Agave anomala"
- "Agave antillarum"
- "Agave applanata"
- "Agave arcedianoensis"
- "Agave × arizonica" = "A. chrysantha" × "A. toumeyana" var. "bella"
- "Agave arubensis"
- "Agave asperrima" – Maguey spero, Rough Century Plant
- "Agave asperrima" subsp. "asperrima"
- "Agave asperrima" subsp. "maderensis"
- "Agave asperrima" subsp. "potosiensis"
- "Agave asperrima" subsp. "zarcensis"
- "Agave atrovirens"
- "Agave attenuata" – Swan's Neck Agave, Dragon Tree Agave, Foxtail Agave
- "Agave attenuata" subsp. "attenuata"
- "Agave attenuata" subsp. "dentata"
- "Agave aurea"
- "Agave avellanidens"

- "Agave bahamana"
- "Agave beauleriana"
- "Agave boldinghiana"
- "Agave boscii"
- "Agave bovicornuta" – Cowhorn Agave
- "Agave braceana"
- "Agave bracteosa" – Squid Agave
- "Agave brevipetala"
- "Agave brevispina"
- "Agave brittoniana"

- "Agave cacozela"
- "Agave cajalbanensis"
- "Agave calodonta"
- "Agave cantala" – Cantala, Maguey de la India
- "Agave capensis"
- "Agave caribaeicola"
- "Agave cerulata"
- "Agave cerulata" subsp. "cerulata"
- "Agave cerulata" subsp. "dentiens"
- "Agave cerulata" subsp. "nelsonii"
- "Agave cerulata" subsp. "subcerulata"
- "Agave chazaroi"
- "Agave chiapensis"
- "Agave chrysantha" – Golden Flowered Agave, Golden Flower Century Plant
- "Agave chrysoglossa"
- "Agave cocui"
- "Agave collina"
- "Agave colorata" – Mescal ceniza
- "Agave congesta"
- "Agave convallis"
- "Agave cundinamarcensis"
- "Agave cupreata"

- "Agave dasylirioides"
- "Agave datylio"
- "Agave demeesteriana"
- "Agave decipiens" – False Sisal
- "Agave delamateri"
- "Agave deserti" – Desert Century Plant, Desert Agave, Maguey de Desierto
- "Agave difformis"
- "Agave durangensis"
- "Agave dussiana"
- "Agave eggersiana" – Eggers' Century Plant, St. Croix Agave
- "Agave ehrenbergii"
- "Agave ellemeetiana"
- "Agave ensifera"
- "Agave evadens"
- "Agave felgeri" – Mescalito
- "Agave filifera" – Thread-leaf Agave
- "Agave flexispina"
- "Agave fortiflora"
- "Agave fourcroydes" – Henequen, Maguey Henequen, Mexican Sisal
- "Agave funkiana" – Ixtle de Jaumav

- "Agave garciae-mendozae"
- "Agave gentryi"
- "Agave ghiesbreghtii"
- "Agave gigantensis"
- "Agave gilbertii"
- "Agave × glomeruliflora" = "A. havardiana" × "A. lechuguilla"
- "Agave gracilipes" – Maguey de pastizal, Slimfoot Century Plant
- "Agave grisea"
- "Agave guadalajarana" – Maguey chato
- "Agave guiengola"
- "Agave gypsophila"
- "Agave harrisii"
- "Agave havardiana" – Havard's Century Plant, Chisos Agave, Maguey de Havard
- "Agave hiemiflora"
- "Agave hookeri"
- "Agave horrida"
- "Agave horrida" subsp. "horrida"
- "Agave horrida" subsp. "perotensis"
- "Agave hurteri"
- "Agave impressa"
- "Agave inaequidens"
- "Agave inaequidens" subsp. "barrancensis"
- "Agave inaequidens" subsp. "inaequidens"
- "Agave inaguensis"
- "Agave indagatorum"
- "Agave intermixta"
- "Agave isthmensis"
- "Agave jaiboli"
- "Agave jarucoensis"

- "Agave karatto"
- "Agave karwinskii"
- "Agave kerchovei"
- "Agave kewensis"
- "Agave lagunae"
- "Agave lechuguilla" – Agave lechuguilla, Lecheguilla, Lechuguilla, Maguey lechuguilla
- "Agave longipes"
- "Agave lopantha"
- "Agave macroacantha"
- "Agave mapisaga"
- "Agave margaritae"
- "Agave marmorata"
- "Agave maximiliana"
- "Agave mckelveyana" – Mckelvey Agave, McKelvey's Century Plant
- "Agave microceps"
- "Agave millspaughii"
- "Agave minor"
- "Agave missionum" – Corita

- "Agave mitis"
- "Agave montana"
- "Agave montium-sancticaroli"
- "Agave moranii"
- "Agave multifilifera"
- "Agave murpheyi" – Maguey Bandeado, Murphey Agave, Murphey's Century Plant, Hohokam Agave
- "Agave nashii"
- "Agave nayaritensis"
- "Agave neglecta" – Wild Century Plant
- "Agave nickelsiae"
- "Agave nizandensis" – Dwarf Octopus Agave
- "Agave nuusaviorum"
- "Agave nuusaviorum" subsp. "deltoidea"
- "Agave nuusaviorum" subsp. "nuusaviorum"
- "Agave obscura"
- "Agave ocahui"
- "Agave ornithobroma" – Maguey pajarito
- "Agave oroensis"
- "Agave ortgiesiana"
- "Agave ovatifolia"
- "Agave pachycentra"
- "Agave palmeri" – Maguey de tlalcoyote, Palmer Agave, Palmer Century Plant, Palmer's Century Plant

- "Agave papyrocarpa"
- "Agave papyrocarpa" subsp. "macrocarpa"
- "Agave papyrocarpa" subsp. "papyrocarpa"
- "Agave parrasana"
- "Agave parryi" – Mezcal yapavai, Parry Agave, Parry's Agave
- "Agave parryi" subsp. "neomexicana"
- "Agave parryi" subsp. "parryi"
- "Agave parvidentata"
- "Agave parviflora" – Maguey sbari, Smallflower Agave, Smallflower Century Plant, Little Princess Agave
- "Agave parviflora" subsp. "densiflora"
- "Agave parviflora" subsp. "flexiflora"
- "Agave parviflora" subsp. "parviflora"
- "Agave peacockii"
- "Agave pelona" – Bald Agave
- "Agave pendula"
- "Agave petiolata"
- "Agave petrophila"
- "Agave phillipsiana"
- "Agave pintilla"
- "Agave polianthiflora"
- "Agave polyacantha"
- "Agave potatorum" – Drunkard Agave
- "Agave potreriana"
- "Agave promontorii"
- "Agave × pumila" = "A. asperrima" × "A. nickelsiae"
- "Agave rhodacantha"
- "Agave rovelliana"
- "Agave rutteniae"
- "Agave rzedowskiana"

- "Agave salmiana" – Pulque, Maguey, Maguey de montaña
- "Agave salmiana" subsp. "crassispina"
- "Agave salmiana" subsp. "salmiana"
- "Agave scaposa"
- "Agave schidigera"
- "Agave schneideriana"
- "Agave schottii" – Maguey puercoesp n, Schott Agave, Schott's Century Plant, Shindagger, Leather Agave
- "Agave sebastiana"
- "Agave seemanniana"
- "Agave shaferi"
- "Agave shawii" – Coastal Agave, Maguey primavera
- "Agave shawii" subsp. "goldmaniana"
- "Agave shawii" subsp. "shawii"
- "Agave shrevei"
- "Agave shrevei" subsp. "magna"
- "Agave shrevei" subsp. "matapensis"
- "Agave shrevei" subsp. "shrevei"
- "Agave sisalana" – Maguey de Sisal, Sisal, Sisal Hemp
- "Agave sobolifera"
- "Agave sobria"
- "Agave sobria" subsp. "frailensis"
- "Agave sobria" subsp. "roseana"
- "Agave sobria" subsp. "sobria"
- "Agave spicata"
- "Agave striata"
- "Agave striata" subsp. "falcata"
- "Agave striata" subsp. "striata"
- "Agave stricta"
- "Agave stringens"
- "Agave subsimplex"

- "Agave tecta"
- "Agave tenuifolia"
- "Agave tequilana" – Mezcal azul tequilero, Tequila Agave, Weber Blue Agave
- "Agave thomasiae"
- "Agave titanota"
- "Agave toumeyana" – Toumey Agave, Toumey's Century Plant
- "Agave triangularis"
- "Agave tubulata"
- "Agave turneri"

- "Agave underwoodii"
- "Agave univittata"
- "Agave utahensis" – Utah Agave
- "Agave utahensis" subsp. "kaibabensis"
- "Agave utahensis" subsp. "utahensis"
- "Agave valenciana"
- "Agave vazquezgarciae"
- "Agave vera-cruz"
- "Agave vicina"
- "Agave victoriae-reginae" – Queen Victoria's Agave
- "Agave victoriae-reginae" subsp. "swobodae"
- "Agave victoriae-reginae" subsp. "victoriae-reginae"
- "Agave vilmoriniana" – Octopus Agave
- "Agave vivipara"
- "Agave vizcainoensis"
- "Agave wallisii"
- "Agave warelliana"
- "Agave weberi" – Maguey liso, Weber's Century Plant, Weber Agave
- "Agave wercklei"
- "Agave wildingii"
- "Agave wocomahi"
- "Agave xylonacantha" – Century Plant, Maguey diente de tiburn
- "Agave zebra"