Hippeastrum striatum (Lam.) H. E. Moore, Amaryllidaceae

Click on an image for links to BIGGER PICTURES

Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  See Hippeastrum puniceum risk assessment.

Other Latin names:  Amaryllis striata Lam.; Hippeastrum puniceum, misapplied in Hawai‘i and likely elsewhere.

Common name(s): [more details]

English: Barbados lily, orange lily

Habit:  herb

Description:  "Perennial herb; bulbs with short neck.  Leaves strap-shaped, to 12 x 1 inches, bright green, blunt-tipped.  Inflorescence a 2-4-flowered umbel, scape to 12 inches tall, hollow; bracts 1.25-2.5 inches long.  Flowers horizontal or drooping, funnel-shaped, 3-4.5 inches long; corolla tube greenish, lobes bright orange, red, or scarlet, with greenish keel halfway along lobe; stamens included, filaments without scales where attached to tepals (bristles sometimes present); style ca. as long as corolla, stigma 3-forked"  (Staples & Herbst, 2005; p. 689).

See Hippeastrum puniceum for most Pacific plants.

Habitat/ecology:  In Hawai‘i, "commonly cultivated and naturalized along irrigation ditches, in pastures, and other disturbed sites, 80-300 m" (Wagner et al., 1999; p. 1463).

Propagation:  "Its dispersal mechanism is perplexing, as seeds have not yet been observed [in Hawaii], but the underground onion-like bulbs produce smaller bulblets that could be moved around with soil and yard waste"  (Oppenheimer, 2008; p. 29).

Native range:  Southern and central Brazil, widely cultivated elsewhere  (Staples & Herbst, 2005; p. 689).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced invasive cultivated	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 33) Naturalized
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1463, 1902) Originally misidentified as Hippeastrum puniceum (Lam.) Voss
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1463, 1902) Originally misidentified as Hippeastrum puniceum (Lam.) Voss; voucher cited: Herbst & Ishikawa 5683 (BISH)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive cultivated	Oppenheimer, Hank (2008) (p. 29) Voucher cited: Oppenheimer, Perlman & Tangalin H30713 (BISH, PTBG)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Oppenheimer, Hank L./Bartlett, Randal T. (2002) (p. 9) Vouchers cited: Oppenheimber & J. Kunna H40005 (BISH), Oppenheimer H119918 (BISH), Oppenheimer H119919 (BISH), Oppenheimer H119921 (BISH)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive cultivated	Oppenheimer, Hank (2008) (p. 29) Voucher cited: Oppenheimer H110721 (BISH, PTBG)
Marshall Islands Ratak Chain	Majuro (Mãjro) Atoll	introduced cultivated	Vander Velde, Nancy (2003) (p. 23)

Control:  If you know of control methods for Hippeastrum striatum, please let us know.