(Upload on December 21 2015) [ 日本語 | English ]

Agave americana L.

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

[Engler's syllabus (エングラー体系)]

Agavaceae (リュウゼツラン)

Cronquist: Liliaceae
Sometimes separated into more families
Agave, Beschorneria, Furcraea, Hesperaloe, Littaea, Manfreda, Polianthes, Prochnyanthes, Yucca
Doryanthaceae, established by APG
Dracaenaceae, merged into Asparagaceae by APG III
Dracaena, Sanseviera
Phormiaceae: merged into Hemerocallidaceae (キスゲ) → into Xanthorrhoeaceae (ススキノキ) by APG III
Agrostocrinum, Corynotheca, Dianella, Excremis, Phormium, Stypandra, Thelionema
Asteliaceae, established by APG
Cordyline, Astelia, Collospermum, Milligania, Neoastelia
Nolinaceae (スズラン), merged into Asparagaceae by APG III
Beaucarnea, Nolina, Dasylirion

Distribution: arid regions in tropical and subtropical zones (no native species in Japan)

Agave L. (リュウゼツラン) in Japan

A. americana L. (アオノリュウゼツラン)
A. attenuata Salm-Dyck (ハツミドリ)
A. fourcroydes Lem. (ヘネケン)
A. potatorum Zucc. (ライジン)
A. sisalana Perrine ex Engelm. (サイザル)
A. stricta Salm-Dyck (フキアゲ)
A. tequilana Weber (テキーラーリュウゼツラン)
A. victorae-reginae T. Moore (ササノユキ)

Agave americana in Japan

Aonoryuuzetsuran (アオノリュウゼツラン, 青ノ龍舌蘭), centuryplant or American aloe
Life form: succulent, evergreen, perennial forb ≈ 3 m tall (real longevity is 10-30 years)
Distribution: Mexico, Arizona, and Texas
Habitat: various habitats, e.g., cliffs, urban areas, woodlands, grasslands, riparian zones, beaches and sandy areas, and rocky slopes
Leaf: characterized by gray-green
Use: ornamental (drought-tolerant)
cv. marginata (リュウゼツラン), with yellow stripes along the margins of each leaf

[1-3] in Hama-rikyu Gardens, Tokyo, on November 13 2015.