Senna multiglandulosa (Jacq.) H. S. Irwin & Barneby, Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Cassia tomentosa L. f.

Common name(s): [more details]

English: buttercup bush, downy senna

Habit:  shrub

Description:  "Shrub or small tree to 6 m high, not armed; twigs densely hairy, finely ribbed, rounded.  Leaves 1-paripinnate, densely hairy on rachis, petiolate; leaflets moderately hairy above, moderately or densely hairy below, oblong or elliptic, slightly asymmetric, subacute and shortly mucronate, entire, subsessile, (10)-15-40 mm long, usually in (4)-5-8 pairs; protruding glands mostly present between each pair of leaflets, often small or deciduous; stipules deciduous.  Inflorescence axillary, racemose, few-flowered, less than or more or less equal leaves; bracts and bracteoles narrow-ovate, deciduous, 3-6 mm long.  Calyx teeth unequal, acute or subacute.  Corolla deep golden yellow, ca 2 cm long; stamens 7; staminodes 3.  Pod indehiscent, hairy, more or less straight or slightly curved, terete or slightly flattened, many-seeded, 8-12 cm long; seeds smooth, brown, ca 5 mm long"  (Webb et al., 1988; p. 637).

Habitat/ecology:  In New Zealand, "established locally in waste places as a garden escape" (Webb et al., 1988; p. 637).

Propagation:  Seed

Native range:  Central and tropical South America (Webb et al., 1988; p. 637).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
New Caledonia New Caledonia	New Caledonia Islands	introduced	Swarbrick, John T. (1997) (p. 89)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive	Tassin, Jacques (2005)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	New South Wales	introduced invasive	Australian Biological Resources Study (2011)
Colombia Colombia	Colombia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Ecuador (Mainland) Ecuador	Ecuador (Republic of) (continental)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Guatemala Guatemala	Guatemala (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Mexico Mexico	Mexico (United Mexican States)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
New Zealand New Zealand	New Zealand (country)	introduced invasive	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 637) "Established locally in waste places as a garden escape".
Perú Perú	Perú (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)

Additional information:
Additional online information about Senna multiglandulosa is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Senna multiglandulosa as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Senna multiglandulosa may be available from the Germplasm Resources Information Network (GRIN).

References:

Australian Biological Resources Study. 2011. Flora of Australia Online. Australian Biological Resources Study, Canberra.

ILDIS Co-ordinating Centre. 2011. International Legume Database & Information Service. Online searchable database.

Swarbrick, John T. 1997. Weeds of the Pacific Islands. Technical paper no. 209. South Pacific Commission, Noumea, New Caledonia. 124 pp.

Tassin, Jacques. 2005. Jacques Tassin (IAC-CIRAD), personal communication.

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. 1988. Flora of New Zealand, Volume IV: Naturalised pteridophytes, gymnosperms, dicotyledons. Botany Division, DSIR, Christchurch. 1365 pp.