Geonoma pinnatifrons

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Geonoma (geo-NO-mah)
pinnatifrons (pihn-NAHT-ih-frahnz)
Geonoma pinnatifrons subsp. martinicensis. Photo-Plants of Saint, edric.
Scientific Classification
Genus: Geonoma (geo-NO-mah)
pinnatifrons (pihn-NAHT-ih-frahnz)
None set.
Native Continent
Habit: Solitary & clustering.
Leaf type: Pinnate
Survivability index
Common names

Habitat and Distribution

Colombia, Costa Rica, Ecuador, Guatemala, Haiti, Honduras, Leeward Is., Mexico Southeast, Mexico Southwest, Nicaragua, Panamá,
Geonoma pinnatifrons subsp. martinicensis. Photo-Plants of Saint
Trinidad-Tobago, Venezuela, and the Windward Is. (Geonoma pinnatifrons subsp. martinicensis; Lesser Antillean endemic. Quite rare understory tree of sheltered spots in lower montane rainforest. Guadeloupe, Dominica, Martinique, St. Lucia, St. Vincent.)


Palm 3.3 (1.0-8.0) m tall; stems 2.6 (0.1-6.0) m tall, 2.1 (1.2-3.2) cm in diameter, solitary or clustered, not cane-like; internodes 1.1 (0.3-2.5) cm long, yellowish and smooth. Leaves 12 (6-23) per stem, irregularly pinnate, not plicate, bases of blades running diagonally into the rachis; sheaths 32.5 (13.0-63.0) cm long; petioles 54.9 (10.0-125.0) cm long, drying green or yellowish; rachis 89.1 (36.0-163.0) cm long, 6.6 (1.9-14.5) mm in diameter; veins raised and rectangular in cross-section adaxially; pinnae 9 (2-39) per side of rachis; basal pinna 42.3 (21.5-65.0) cm long, 4.7 (0.5-22.5) cm wide, forming an angle of 47 (20-70)° with the rachis; apical pinna 33.6 (16.0-61.0) cm long, 17.3 (3.5-44.5) cm wide, forming an angle of 29 (21-37)° with the rachis. Inflorescences branched 1-4 orders; prophylls and peduncular bracts not ribbed with elongate, unbranched fibers, flattened (if tubular, narrow, and elongate then not ribbed), deciduous or persistent; prophylls 15.6 (7.0-25.0) cm long, not short and asymmetrically apiculate, the surfaces ridged and densely tomentose with widely to closely spaced ridges, unequally wide, often dividing from and rejoining other ridges, the prophyll margins with irregular, spine-like projections, the prophylls usually splitting irregularly between the ridges; peduncular bracts 16.8 (10.0-27.5) cm long, well-developed, inserted 2.6 (0.6-7.4) cm above the prophyll; peduncles 24.2 (10.0-42.0) cm long, 8.1 (2.4-21.2) mm in diameter; rachillae 18 (4-45), 14.2 (7.0-28.3) cm long, 2.3 (1.1-3.8) mm in diameter, the surfaces without spiky, fibrous projections or ridges, drying brown, with faint to pronounced, short, transverse ridges, not filiform and not narrowed between the flower pits; flower pits spirally arranged, densely hairy internally proximally and distally; proximal lips without a central notch before anthesis, not recurved after anthesis, hood-shaped at anthesis, sometimes splitting post-anthesis; proximal and distal lips drying the same color as the rachillae, not joined to form a raised cupule, the proximal lip margins overlapping the distal lip margins; proximal lips hood-shaped; distal lips absent; staminate and pistillate petals not emergent, not valvate throughout; staminate flowers deciduous after anthesis; stamens 6; thecae diverging at anthesis, inserted almost directly onto the filament apices, the connectives bifid but scarcely developed; anthers short and curled over at anthesis; non-fertilized pistillate flowers persistent or deciduous after anthesis; staminodial tubes crenulate or shallowly lobed at the apex, those of non-fertilized pistillate flowers not projecting and persistent after anthesis. Fruits 6.2 (3.6-9.3) mm long, 4.8 (3.5-7.0) mm in diameter, the bases without a prominent stipe, the apices not conical, the surfaces not splitting at maturity, without fibers emerging, bumpy from the numerous, subepidermal, tangential, short fibers present, these coming to a point at fruit apices; locular epidermis without operculum, smooth or locular epidermis sculpted and then usually also with a raised, meridional ridge, without pores. (Henderson, A.J. 2011)/Palmweb. Editing by edric.


Comments and Curiosities

External Links


Phonetic spelling of Latin names by edric.

Special thanks to Geoff Stein, (Palmbob) for his hundreds of photo.

Special thanks to, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.

Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).

Henderson, A.J. 2011. A revision of Geonoma. Magnolia Press.

Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.

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