TAXON: Dendrobium antennatum SCORE: 7.0 RATING: High Risk Lindl. Taxon: Dendrobium antennatum Lindl. Family: Orchidaceae Common Name(s): green antelope orchid Synonym(s): Callista antennata Ceratobium antennatum Ceratobium dalbertisii Dendrobium dalbertisii Assessor: Chuck Chimera Status: Assessor Approved End Date: 5 Sep 2018 WRA Score: 7.0 Designation: H(HPWRA) Rating: High Risk Keywords: Epiphytic Herb, Naturalized, Shade-Tolerant, Self-Compatible, Wind-Dispersed Qsn # Question Answer Option Answer 101 Is the species highly domesticated? y=-3, n=0 n 102 Has the species become naturalized where grown? 103 Does the species have weedy races? Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet (0-low; 1-intermediate; 2-high) (See Appendix 2) High tropical" for "tropical or subtropical" 202 Quality of climate match data (0-low; 1-intermediate; 2-high) (See Appendix 2) High 203 Broad climate suitability (environmental versatility) y=1, n=0 y Native or naturalized in regions with tropical or 204 y=1, n=0 y subtropical climates Does the species have a history of repeated introductions 205 y=-2, ?=-1, n=0 y outside its natural range? 301 Naturalized beyond native range y = 1*multiplier (see Appendix 2), n= question 205 y 302 Garden/amenity/disturbance weed n=0, y = 1*multiplier (see Appendix 2) n 303 Agricultural/forestry/horticultural weed n=0, y = 2*multiplier (see Appendix 2) n 304 Environmental weed n=0, y = 2*multiplier (see Appendix 2) n 305 Congeneric weed 401 Produces spines, thorns or burrs y=1, n=0 n 402 Allelopathic 403 Parasitic y=1, n=0 n 404 Unpalatable to grazing animals 405 Toxic to animals y=1, n=0 n 406 Host for recognized pests and pathogens 407 Causes allergies or is otherwise toxic to humans y=1, n=0 n 408 Creates a fire hazard in natural ecosystems y=1, n=0 n Creation Date: 5 Sep 2018 (Dendrobium antennatum Page 1 of 14 Lindl.) TAXON: Dendrobium antennatum SCORE: 7.0 RATING: High Risk Lindl. Qsn # Question Answer Option Answer 409 Is a shade tolerant plant at some stage of its life cycle y=1, n=0 y Tolerates a wide range of soil conditions (or limestone 410 conditions if not a volcanic island) 411 Climbing or smothering growth habit y=1, n=0 n 412 Forms dense thickets y=1, n=0 n 501 Aquatic y=5, n=0 n 502 Grass y=1, n=0 n 503 Nitrogen fixing woody plant y=1, n=0 n Geophyte (herbaceous with underground storage organs 504 y=1, n=0 n -- bulbs, corms, or tubers) Evidence of substantial reproductive failure in native 601 y=1, n=0 n habitat 602 Produces viable seed y=1, n=-1 y 603 Hybridizes naturally y=1, n=-1 y 604 Self-compatible or apomictic y=1, n=-1 y 605 Requires specialist pollinators y=-1, n=0 n 606 Reproduction by vegetative fragmentation 607 Minimum generative time (years) Propagules likely to be dispersed unintentionally (plants 701 y=1, n=-1 n growing in heavily trafficked areas) 702 Propagules dispersed intentionally by people y=1, n=-1 y 703 Propagules likely to disperse as a produce contaminant 704 Propagules adapted to wind dispersal y=1, n=-1 y 705 Propagules water dispersed 706 Propagules bird dispersed y=1, n=-1 n 707 Propagules dispersed by other animals (externally) y=1, n=-1 n 708 Propagules survive passage through the gut y=1, n=-1 n 801 Prolific seed production (>1000/m2) y=1, n=-1 y Evidence that a persistent propagule bank is formed (>1 802 yr) 803 Well controlled by herbicides 804 Tolerates, or benefits from, mutilation, cultivation, or fire Effective natural enemies present locally (e.g. introduced 805 biocontrol agents) Creation Date: 5 Sep 2018 (Dendrobium antennatum Page 2 of 14 Lindl.) TAXON: Dendrobium antennatum SCORE: 7.0 RATING: High Risk Lindl. Supporting Data: Qsn # Question Answer 101 Is the species highly domesticated? n Source(s) Notes [Widely cultivated, but no evidence of domestication] "One of the most widely distributed and best known species of the section in Cribb, P. (1986). A Revision of Dendrobium sect. Spatulata cultivation, D. antennatum can be readily recognised by its (Orchidaceae). Kew Bulletin, 41(3), 615-692 intermediate-sized white flowers with green or yellow-green erect petals and a purple-veined lip." 102 Has the species become naturalized where grown? Source(s) Notes WRA Specialist. 2018. Personal Communication NA 103 Does the species have weedy races? Source(s) Notes WRA Specialist. 2018. Personal Communication NA Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet High tropical" for "tropical or subtropical" Source(s) Notes Cribb, P. (1986). A Revision of Dendrobium sect. Spatulata "New Guinea to Solomon Islands and NE Australia: Queensland; sea (Orchidaceae). Kew Bulletin, 41(3), 615-692 level-1200 m." 202 Quality of climate match data High Source(s) Notes Cribb, P. (1986). A Revision of Dendrobium sect. Spatulata (Orchidaceae). Kew Bulletin, 41(3), 615-692 203 Broad climate suitability (environmental versatility) y Source(s) Notes "New Guinea to Solomon Islands and NE Australia: Queensland; sea Cribb, P. (1986). A Revision of Dendrobium sect. Spatulata level- 1200 m." [Elevation range exceeds 1000 m in tropical climates, (Orchidaceae). Kew Bulletin, 41(3), 615-692 demonstrating potential environmental versatility] Native or naturalized in regions with tropical or 204 y subtropical climates Source(s) Notes Creation Date: 5 Sep 2018 (Dendrobium antennatum Page 3 of 14 Lindl.) TAXON: Dendrobium antennatum SCORE: 7.0 RATING: High Risk Lindl. Qsn # Question Answer "Dendrobium antennatum, a native of New Guinea to northeastern Australia and the Solomon Islands (Kamemoto et al. 1999), was recently found in a backyard in Nu͚uanu. This species was first collected as cultivated in Hawai͚i at the National Tropical Botanical Garden on Kaua͚i. No prior collections have been made on O͚ahu; however, ͞antennatum type͟orchids were cited as one of the Frohlich, D. & Lau, A. 2010. New plant records from O͚ahu preferred orchids for O͚ahu orchid growers in a 2003 study (Kuehnle for 2008. Bishop Museum Occasional Papers 107: 3-18 et al. 2003) and the species is widely used in hybridization (Staples & Herbst 2005)." ͙"Material examined. O͚AHU: Nu͚uanu, backyard at 132 Ragsdale Pl (UTM 621794, 2360591), lowland mesic residential setting, epiphyte, stems growing to 0.5 m, several individuals naturalized in this and adjoining yard, 14 oct 2008, D. Frohlich & A. Lau 2008101401." Cribb, P. (1986). A Revision of Dendrobium sect. Spatulata "New Guinea to Solomon Islands and NE Australia: Queensland; sea (Orchidaceae). Kew Bulletin, 41(3), 615-692 level-1200 m." Does the species have a history of repeated 205 y introductions outside its natural range? Source(s) Notes Imada, C.T., Staples, G.W. & Herbst, D.R. 2005. Annotated Checklist of Cultivated Plants of Hawai͚i. "Locations: Pacific Tropical Botanical Garden (now National Tropical http://www2.bishopmuseum.org/HBS/botany/cultivatedp Botanical Garden)" lants/. [Accessed 4 Sep 2018] "One of the most widely distributed and best known species of the Cribb, P. (1986). A Revision of Dendrobium sect. Spatulata section in cultivation, D. antennatum can be readily recognised by its (Orchidaceae). Kew Bulletin, 41(3), 615-692 intermediate-sized white flowers with green or yellow-green erect petals and a purple-veined lip." 301 Naturalized beyond native range y Source(s) Notes "Dendrobium antennatum, a native of New Guinea to northeastern Australia and the Solomon Islands (Kamemoto et al. 1999), was recently found in a backyard in Nu͚uanu. This species was first collected as cultivated in Hawai͚i at the National Tropical Botanical Garden on Kaua͚i. No prior collections have been made on O͚ahu; however, ͞antennatum type͟orchids were cited as one of the Frohlich, D. & Lau, A. 2010. New plant records from O͚ahu preferred orchids for O͚ahu orchid growers in a 2003 study (Kuehnle for 2008. Bishop Museum Occasional Papers 107: 3-18 et al. 2003) and the species is widely used in hybridization (Staples & Herbst 2005)." ͙"Material examined. O͚AHU: Nu͚uanu, backyard at 132 Ragsdale Pl (UTM 621794, 2360591), lowland mesic residential setting, epiphyte, stems growing to 0.5 m, several individuals naturalized in this and adjoining yard, 14 oct 2008, D. Frohlich & A. Lau 2008101401." Creation Date: 5 Sep 2018 (Dendrobium antennatum Page 4 of 14 Lindl.) TAXON: Dendrobium antennatum SCORE: 7.0 RATING: High Risk Lindl. Qsn # Question Answer 302 Garden/amenity/disturbance weed n Source(s) Notes Randall, R.P. (2017). A Global Compendium of Weeds. 3rd No evidence Edition. Perth, Western Australia. R.P. Randall 303 Agricultural/forestry/horticultural weed n Source(s) Notes Randall, R.P. (2017). A Global Compendium of Weeds. 3rd No evidence Edition. Perth, Western Australia. R.P. Randall 304 Environmental weed n Source(s) Notes [No evidence of impacts to date] "Dendrobium antennatum, a native Frohlich, D. & Lau, A. 2010. New plant records from O͚ahu of New Guinea to northeastern Australia and the Solomon Islands for 2008. Bishop Museum Occasional Papers 107: 3-18 (Kamemoto et al. 1999), was recently found in a backyard in Nu͚uanu." Randall, R.P. (2017). A Global Compendium of Weeds. 3rd No evidence Edition. Perth, Western Australia. R.P. Randall 305 Congeneric weed Source(s) Notes Randall, R.P. (2017). A Global Compendium of Weeds. 3rd "Dendrobium crumenatum ͙Weed of: Orchards & Plantations" [No Edition. Perth, Western Australia. R.P. Randall evidence of impacts found in subsequent literature searches] [No evidence of impacts to date] "This species, which is native to Sri Frohlich, D. & Lau, A. 2010. New plant records from O͚ahu Lanka, Burma, Indochina, throughout Malesia and the Philippines to for 2008.