Key to the Pollen of the Bahamas©

Links to the keys.

Link to the Master Key Link to the Submaster Key to Rotational Grains Link to the Submaster Key to Porate Grains Link to the Submaster Key to Tricolpate Grains Link to the Submaster Key to Tricolporate Grains Link to the Key to Vesiculate Grains Link to the Key to Tetrad Grains Link to the Key to Polyad Grains Link to the Key to Bilaterally Symmetrical Grains and Spores Link to the Key to Inaperturate and Irregular Grains Link to the Key to Subtetrahedral Spores
Link to the Key to Stephanocolpate Grains Link to the Key to Pericolpate Grains Link to the Key to Monocolporate Grains Link to the Key to Polycolporate Grains Link to the Key to Tetracolporate Grains Link to the Key to Monocolpate Grains Link to the Key to Tricolpate, Psilate Grains Link to the Key to Tricolpate, Scabrate Grains Link to the Key to Tricolpate, Verrucate, Echinate Grains Link to the Key to Tricolpate, Suprareticulate Grains Link to the Key to Tricolpate, Per-reticulate Grains
Link to the Key to Tricolpate, Intectate Grains Link to the Key to Tricolporate, Psilate, Scabrate Grains Link to the Key to Tricolporate, Echinate Grains Link to the Key to Tricolporate, Foveate, Suprareticulate Grains Link to the Key to Tricolporate, Intectate, Per-reticulate Grains Link to the Key to Monoporate Grains Link to the Key to Diporate Grains Link to the Key to Triporate Grains Link to the Key to Stephanoporate Grains Link to the Key to Periporate Grains

Highlighted words are linked to their glossary definitions. Definitions and images contributed by the Glossary of Pollen and Spore Terminology,second and revised edition by Peter Hoen.


Table I4
Key to Tricolporate Intectate and Per-reticulate Grains

A2 Grains with costae equatorialesendoapertures with thickened edges that extend around the grain at its equator






B2 Fine, obvious reticulation of clavate elements, colpus a long, very narrow line, prolate, 16 x 28 μM

Corchorus
Corchorus images
A1 No costae equatoriales






C2 Grains with a distinct reticulate pattern







D2 Apertures indistinct, colpi fine narrow lines that are difficult to resolve, uniform, open reticulum of long, clavate elements, spheroidal, 26-32 μM

Antirhea lucida
Antirhea lucida images


D1 Apertures obvious







E2 Clavae form a fringe around aperture in surface view, grains near spheroidal








F2 Colpi distinctly open in polar view, apertures open in their middle, 44-46 μM

Psychotria ligustrifolia
Psychotria ligustrifolia images




F1 Colpi narrow lines in polar view, apertures nearly closed meridional slits, 46-48 μM *

Psychotria nervosa
Psychotria nervosa images



E1 No fringe of clavae around aperture, open furrows with an obvious, psilate endexineclavae gradually shorten towards edges of colpus such that intercolpium appears crescenticspheroidal, 16-22 μM

Crossopetalum
Crossopetalum images

C1 No distinct reticulation, intectate grains with gemmate or clavate elements more or less uniformly distributed







G2 Furrow with an equatorial constriction







H2 Grains prolate-spheroidalfurrows depressed, extend well toward poles, 36 x 40 μM

Coccoloba diversifolia
Coccoloba diversifolia images



H1 Grains subprolate








12 Grains thick walled, furrows narrow and shallow, 38 x 50 μM

Antigonon
Antigonon images




11 Grains not appreciably thick walled, surface tightly packed with clavae that are obvious in low focus, 18 x 22 μM

Maytenus buxifolia
Maytenus buxifolia images


G1 No equatorial constriction







J2 Intercolpium strongly convex such that grains have at least a moderately 3-lobed appearance in equatorial limb

Euphorbia 
Euphorbia  images




K2 Grains prolate-spheroidalclavae distinctly spaced, 29 x 32 μM

Euphorbia heterophylla
Euphorbia heterophylla images




K1 Grains prolateclavae closely spaced









L3 Grains about 18 x 28 μM, American football shaped, colpi narrow and deeply depressed, only moderate costa endocolpi

Euphorbia hypericifolia
Euphorbia hypericifolia images





L2 Grains about 16 x 24 μM, not pointed toward poles, obvious costa endocolpi

Euphorbia blodgetii
Euphorbia blodgetii images





L1 Grains about 22 x 28 μM, ends rounded, furrows wide with obvious endexine

Euphorbia mesembrianthemifolia
Euphorbia mesembrianthemifolia images



J1 Grains more or less round in equatorial limb








M2 Surface elements gemmate









N2 Gemmate elements very large, furrows obscure, spheroidal, 26 μM

Ilex
Ilex images






N1 Gemmate elements smaller, obvious furrowsprolate-spheroidal, 24 x 26 μM

Buxus
Buxus images





M1 Surface elements clavate









O2 Grains subprolate










P2 Colpi narrow lines, endopores rectangular with meridional dimension much wider than width of colpus, melon-shaped, 24 x 32 μM

Savia
Savia images






P1 Colpi narrow lines that are difficult to resolve on surface of grain, blunt ended, strong costa endocolpi, endopore a very narrow, transverse slit, 12 x 16 μM

Zanthoxylum
Zanthoxylum images





O1 Grains prolate-spheroidal to spheroidal










Q2 Aperture an obvious rounded pore











R2 Intercolpium flares out slightly at edges of aperture in equatorial limbcolpi indistinct except at aperturesspheroidal 26-40 μM

Morinda
Morinda images







R1 No flaring of intercolpiumcolpi distinct slits extending toward polesprolate-spheroidal, 36 x 38 μM

Coccoloba uvifera
Coccoloba uvifera images






Q1 Apertures not pore-like











S2 Colpi wide V’s without inturned edges in polar viewendexine in furrows obvious, flaring out slightly at apertures, endopore a small meridional slit, 32 μM

Avicennia
Avicennia images







S1 Colpi narrower












T2 Colpi narrow V’s with inturned, thick edges, furrows depressed, 24 x 26 μM

Coccoloba krugii
Coccoloba krugii images








T1 Colpi long, parallel-sided, narrow, not depressed, intercolpium slightly crescentic, endopores small transverse slits, 25-30 μM

Erythroxylum areolatum
Erythroxylum areolatum images
* Note: Some of the grains in the Psychotria sp. photos are split due to preparation, these splits are not colpi


  To download the taxonomic key: link to download key   To return to  the introduction: link to introduction   For information on the included taxa: link to taxa and sources   For information on the glossary: link to glossary introduction