TAXON: Sphagnum palustre L. SCORE: 11.0 RATING: High Risk Taxon: Sphagnum palustre L. Family: Sphagnaceae Common Name(s): boat-leaved sphagnum Synonym(s): Sphagnum cymbifolium (Ehrhart) R. Hedwig peat moss praire sphagnum spoon-leaved sphagnum Assessor: Chuck Chimera Status: Assessor Approved End Date: 17 Sep 2019 WRA Score: 11.0 Designation: H(Hawai'i) Rating: High Risk Keywords: Dioecious Moss, Environmental Weed, Shade-Tolerant, Dense Mats, Spreads Vegetatively 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) Intermediate 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 n 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) y 305 Congeneric weed n=0, y = 1*multiplier (see Appendix 2) n 401 Produces spines, thorns or burrs y=1, n=0 n 402 Allelopathic y=1, n=0 y 403 Parasitic y=1, n=0 n 404 Unpalatable to grazing animals y=1, n=-1 y 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: 17 Sep 2019 (Sphagnum palustre L.) Page 1 of 19 TAXON: Sphagnum palustre L. SCORE: 11.0 RATING: High Risk 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 y=1, n=0 n 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 y 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 604 Self-compatible or apomictic y=1, n=-1 n 605 Requires specialist pollinators y=-1, n=0 n 606 Reproduction by vegetative fragmentation y=1, n=-1 y 607 Minimum generative time (years) 1 year = 1, 2 or 3 years = 0, 4+ years = -1 1 Propagules likely to be dispersed unintentionally (plants 701 y=1, n=-1 y 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 y=1, n=-1 y 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) Evidence that a persistent propagule bank is formed (>1 802 yr) 803 Well controlled by herbicides y=-1, n=1 y 804 Tolerates, or benefits from, mutilation, cultivation, or fire y=1, n=-1 y Effective natural enemies present locally (e.g. introduced 805 biocontrol agents) Creation Date: 17 Sep 2019 (Sphagnum palustre L.) Page 2 of 19 TAXON: Sphagnum palustre L. SCORE: 11.0 RATING: High Risk Supporting Data: Qsn # Question Answer 101 Is the species highly domesticated? n Source(s) Notes [No evidence of domestication] "Sphagnum palustre has a Karlin, E. (2001). Taxonomy of Hawaiian Sphagna. The suboceanic, amphiatlantic and amphipacific distribution in the Bryologist, 104(2), 290-296 northern hemisphere." 102 Has the species become naturalized where grown? Source(s) Notes WRA Specialist. (2019). Personal Communication NA 103 Does the species have weedy races? Source(s) Notes WRA Specialist. (2019). Personal Communication NA Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet Intermediate tropical" for "tropical or subtropical" Source(s) Notes "In the Hawaiian Islands, Sphagnum palustre occurs naturally only on the Island of Hawaii. The population on the Island of Oahu (in the Mt. Kaala Natural Area Reserve) resulted from a transplantation from the Island of Hawaii in the 1960's (Hoe 1971; Karlin & Andrus Karlin, E. (2001). Taxonomy of Hawaiian Sphagna. The 1995)." ͙"Hawaiian S. palustre is probably the result of a single Bryologist, 104(2), 290-296 dispersal event, with one diaspore serving as the founding agent. Since there is evidence that S. palustre has existed on the island of Hawaii for over 23,000 yr (Karlin & Hotchkiss, pers. comm.), we know that S. palustre has a long history there." "Widespread in forested fens and poor to rich sedge fens; low to moderate elevations; B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., Flora of North America. (2019). Sphagnum palustre. P.E.I., Que.; Ala., Ark., Calif., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Ky., http://www.efloras.org. [Accessed 16 Sep 2019] La., Maine, Md., Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Oreg., Pa., S.C., Tenn., Tex., Vt., Va., Wash., W.Va., Wis.; Europe; Pacific Islands." [Temperate to subtropical] 202 Quality of climate match data High Source(s) Notes Flora of North America. (2019). Sphagnum palustre. http://www.efloras.org. [Accessed 16 Sep 2019] 203 Broad climate suitability (environmental versatility) n Source(s) Notes Creation Date: 17 Sep 2019 (Sphagnum palustre L.) Page 3 of 19 TAXON: Sphagnum palustre L. SCORE: 11.0 RATING: High Risk Qsn # Question Answer "Sphagnum has a very limited presence in the Hawaiian Islands, occurring naturally on Hawaii and Maui. It occurs at elevations ranging from 900 to 1,900 m, which closely correspond to the Karlin, E. F., & Andrus, R. E. (1995). The sphagna of Hawaii. wettest zone in the Hawaiian Islands (on summits and northeast- Bryologist, 98(2): 235-238 facing slopes at elevations ranging from 600 to 1,500 m). Because of the presence of a temperature inversion layer between 1,500 and 2,100 m, elevations much above 1,800 m tend to be quite dry (Carlquist 1980; Cuddihy 1989) and do not support Sphagnum." Flora of North America. (2019). Sphagnum palustre. "Widespread in forested fens and poor to rich sedge fens; low to http://www.efloras.org. [Accessed 16 Sep 2019] moderate elevations" Native or naturalized in regions with tropical or 204 y subtropical climates Source(s) Notes "Sphagnum has a very limited presence in the Hawaiian Islands, occurring naturally on Hawaii and Maui. It occurs at elevations Karlin, E. F., & Andrus, R. E. (1995). The sphagna of Hawaii. ranging from 900 to 1,900 m, which closely correspond to the Bryologist, 98(2): 235-238 wettest zone in the Hawaiian Islands (on summits and northeast- facing slopes at elevations ranging from 600 to 1,500 m)." [Occurs in mid-elevation, wet areas of the Hawaiian Islands] Does the species have a history of repeated 205 y introductions outside its natural range? Source(s) Notes Crum H.A. & Anderson, L.E. (1981). Mosses of Eastern "Reported from many parts of South America, Korea, and North America. Volume 1. Columbia University Press, New southeastern Asia and southward to Australia and New Zealand." York, NY 301 Naturalized beyond native range y Source(s) Notes "A Sphagnum sp., probably S. palustre that is indigenous to Kohala Mountain, is found in two locations near Kilauea Visitor Center in HAVO. The nearest known location is on the side of the Old Volcano Road across and upslope from the Volcano post office along the fence of a residence. It was also found (HAVO Herbarium, coll. Will Haines) at a house lot in the Hawaii Orchid Island Estates subdivision Waite, M. (2007). Mosses of Hawaii Volcanoes National below Volcano Village under the shade of uluhe (Dicranopteris Park. Technical Report 153. Pacific Cooperative Studies linearis) fern. It has recently been found in the new Kahuku unit Unit, University of Hawaii at Manoa, Department of (Belfield, pers. comm.) of HAVO. Although it is indigenous to Hawaii Botany, Honolulu, HI it was limited to the Kohala Mountains until its use with forestry seedlings spread it more widely on the island of Hawaii (Karlin & Andrus 1995)." ͙"S. palustre was also spread to Kaala Bog on Oahu where it is displaces ground bryophytes. In the longer term it may also prevent regeneration of ohia (Metrosideros polymorpha) and other trees by increasing waterlogging and acidification of the ground (Vanbreemen 1995)." Creation Date: 17 Sep 2019 (Sphagnum palustre L.) Page 4 of 19 TAXON: Sphagnum palustre L. SCORE: 11.0 RATING: High Risk Qsn # Question Answer "In the Hawaiian Islands, Sphagnum palustre occurs naturally only on the Island of Hawaii.