Zamia dressleri
Template:Short description Template:Speciesbox
Zamia dressleri is a species of plant in the family Zamiaceae. It is endemic to Eastern Panama, where it grows in rainforest habitat.[1]
Etymology
The specific epithet dressleri recognizes Robert Louis Dressler, a botanist who worked in Panama and was the first to recognize the species as distinct from other Zamias.Template:Sfn
Phylogenetic history
The two populations of Zamia dressleri were previously identified as Z. skinneri.Template:Sfn Based on Strobilus (cone) morphology and growth habit, Z. dressleri and Z. wallisii have been placed in a clade. Z. dressleri has also been associated with the Z. skinneri species complexTemplate:Broken anchor.Template:Sfn A molecular phylogenetics study in 2019 using DNA and one in 2024 using transcriptomes found Z. dressleri to be sister to the Z. obliqua clade rather than the Z. skinneri clade. (The Z. obliqua clade includes Z. elegantissima and Z. stevensonii.)Template:SfnTemplate:Sfn
Description
The stem of Zamia dressleri is subterranean and Script error: No such module "convert". in diameter. Cataphylls are ovate, Script error: No such module "convert". long, and Script error: No such module "convert". wide. The stem apex usually has one compound-leaf, although up to three may occur. The leaves are Script error: No such module "convert". long, with a Script error: No such module "convert". long petiole (leaf stalk). There are two to five pairs of leaflets on the rachis (mid-rib) of the leaf. The petiole is sparsely to densely covered with prickles, and the lower third of the rachis may have a few prickles. The leaflets are elliptical, cuneate (wedge-shaped) at the base and pointed at the apex. the outer third of the leaflet edges are toothed. Leaflets on the middle of the leaf are Script error: No such module "convert". long and Script error: No such module "convert". wide.Template:Sfn
Like all cycads, Zamia dressleri is dioecious, having plants that are either male or female. Male strobili are cylindrical to elongate-cylindrical, Script error: No such module "convert". long, Script error: No such module "convert". in diameter, and cream to tan in color. Female strobili are ovoid-cylindrical, Script error: No such module "convert". long, Script error: No such module "convert". in diameter, and wine-red to dark red-brown in color. The female strobili stand on short peduncles (stalks). Seeds are ovoid, Script error: No such module "convert". in diameter, and red in color.Template:Sfn
Habitat
Zamia dressleri is endemic to two small populations in Panama, in Colón Province and the comarca indígena of Guna Yala.Template:Sfn
References
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Sources
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