Codd, Lamiaceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Habit: herb
Description: "Perennial erect robust semi-succulent suffretex 1-1.5 m tall; stems woody at the base, obscurely 4-angled, sparingly branched, densely cano-tomentose and with minute gland-dots. Leaves semi-fleshy, slightly aromatic, drying fairly thick-textured; petiole 1-1.5 cm long, pubescence as for the stems; blade broadly obovate to subrotund, 4-6 cm long and equally broad, densely appressed pubescent and veins indistinct above, woolly-tomentose and distinctly reticulate veined below, freely dotted with minute reddish-brown gland-dots; apex rounded; base cuneate to abruptly attenuate on to the petiole; margin coarsely crenate expect in the lower third with 8-12 pairs of rounded teeth. Inflorescence a terminal spike-like raceme of interrupted densely glomerate verticillasters, verticillasters 1-3 cm apart, simple or with a pair of branches near the base up to 35 cm long; rhachis densely woolly-tomentose; bracts broadly ovate, 3 mm long, 2.5 mm broad, acute, densely tomentose, persisting to early flowering stage. Flowers in very dense ± 210-flowered sessile cymes, densely tomentose, producing ± 40-flowered verticillasters; pedicels erect to ascending 4-5 mm long, densely tomentose. Calyx 2.5-3 mm long at flowering, enlarging to 5-6 mm in fruit, glandular-tomentose; tube short, campanulate; uppermost tooth by far the largest, horizontal, broadly ovate, 2.5 mm long and 2 mm broad, abruptly acute at the apex, the lower 4 teeth short, subulate. Corolla white, 1-1.2 cm long, glandular-pubescent; tube slightly bent about the middle, 1 mm deep at the base, expanding to 2 mm at the throat; upper lip short, erect, 1.5-2 mm long and equally broad and somewhat hooded, emarginate and with 2 obscure lateral lobes; lower lip boat-shaped, 5-7 mm long, horizontal. Stamens united at the base for 1-2 mm, curved upwards in the lower lip, 5-7 mm long, enclosed or slightly exserted. Style exserted by about 1 mm" (Codd, 1975; p. 388).
Habitat/ecology: "Recorded from the Kaokoveld, northern South West Africa, in dry Mopane woodland, on high rocky situations up to 2,300 m altitude, with broken fragments of limestone and weathered dolomite" (Codd, 1975; p. 388).
Propagation: Seed
Native range: Namibia (GRIN).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Ecuador (Galápagos Islands)
Floreana Group |
Floreana Island |
introduced
invasive cultivated |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Isabela Group |
Isabela Island |
introduced
invasive cultivated |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Santa Cruz Group |
Santa Cruz Island |
introduced
invasive cultivated |
Charles Darwin Foundation (2008) |
Control: If you know of control methods for Plectranthus unguentarius, please let us know.