Dracunculus canariensis (Araceae)
Slender, clump-forming herb to 1.5 m. Tuber 4-6 x 2-3 cm, solitary while immature, later producing numerous slender, 4-12 cm x 5-10 mm, simple to few-branched stolons from the upper surface, these soon producing shoots and tubers. Pseudostem 20-130 x 1-6 cm, pale glaucous,green. LEAVES 8-20 x 6-30 cm, pale to mid-glaucous green. INFLORESCENCE 24-55 cm in total length, newly opened inflorescence smelling of semen; peduncle mostly enclosed by.the pseudostem, visible portion 4-12 x 1-1.5 cm, glaucous green; spathe tube 4-8 x 2-3.5 cm, oblong-cylindric, weakly convolute to gaping, exterior glaucous green, interior pale greenish white; spathe limb 20-47 x 6-14 cm, narrowly ovatelanceolate, acuminate, exterior pale glaucous green, interior pale greenish white; spadix 16-42 cm in total length; spadix appendix 12-37 cm x 7-20 mm, briefly stipitate, slender cylindric to slender fusiform, pale yellow. Flowers; pistillate flowers arranged in an oblong zone 10-20 x 5-12 mm, ovary oblong-fusiform, 2-3 x 1-1.5 mm, pale greenish cream, stylar region similarly coloured, stigma 0.5-0.75 x 0.3 mm, punctate-conic, papillate, pale cream; staminate flowers arranged in an oblong zone 10-20 x 5-10 mm, anthers 1-2 x 0.75-1.5 mm, mid-yellow. INFRUCTESCENCE 2-5 x 2-3 cm, comprised of c. 50 berries, often partially to completely encased in the dry spathe tube remnants; berries obovoid, 4-6 x 3-5 mm, orange when ripe. Seed compressed globose, 2-3 mm diam., pale brown. Chromosome count 2n = 28
Although the inflorescence of D. canariensis is superficially similar to that D. vulgaris it appears that D. canariensis has evolved in association with a difierent pollinator. The pale spathe limb, yellow spadix appendix and semen-like odour attract small flies, wasps and small bees (Boyce, pers. obs.) The spathe tube gapes at the front and allows insects direct access to the flowers whereas in D. vulgaris the potential pollinators (large flies, Staphylinid and Scarabidinid beetles) enter the spathe tube and gain access to the flowers by descending the spadix appendix.
Distribution. Atlantic Islands: Madeira, Gran Canada, La Palma, Tenerife
Ecology. Laurel forest margins, open, dry woodland, scrubby field margins