Sleutel voor Noordwest-Europese Rosaceae-pollen (Eide 1981)

Tabel-overzicht

Brontekst (Eide 1981)

Key for Northwest European Rosaceae pollen

Eide, F.: Grana 20: 101-118. Uppsala 2 October 1981. ISSN 0017-3134

Index letters are in italics when there are more than two entries in the same group

A Tricolporate pollen with operculum B Psilate-scabrate, scabrate-echinate to microstriate, oblate with short colpi, PAI 0.32- 0.50; exine thick 2.0-2.7 um: Sanguisorba C Verrucate-microstriate, sometimes striate with echinae, operculum narrow, protruding in its whole length; longest axis 26.5 um: S. minor (Figs. 6F, 10G) CC Psilate-scabrate, operculum extremely broad, as broad as the intercolpium; the grain makes the impression of being hexacolpate; longest axis 29.8 um: S. officinalis (Figs. 7A, 10H) BB Striate D Vallae coarse, in optical cross-section acute; tectal perforations not visible in LM or SEM E Vallae rarely parallel, operculum extremely narrow, pore always distinct, longest axis 24 um: Sibbaldia procumbens (Figs. 7B, 10I) EE Vallae often parallel, persistent and meridional, operculum narrow to broad, pore not always distinct F Vallae broad, diffuse in horizontal projection G Colpi constricted, ends rounded, vallae diffuse in LM, grains always prolate, longest axis 29 um: Comarum palustre (Figs. 1F, 8D) GG Colpi not constricted, ends acute, vallae distinct in LM, grains never prolate H Polar areas flattened: Fragaria vesca (Figs. 3D, 8J) HH Polar areas not flattened: Longest axis 22,5 um: Potentilla anserina (Figs. 4B, 9C) Longest axis 30.2 um: P. norvegica (Figs. 4E, 9F) FF Vallae narrow, sharp and distinct in horizontal projection I Colpus ends rounded: Fragaria viridis (Figs. 3C, 8K) II Colpus ends acute J Exine thick, 1.7 um: Potentilla crantzii (Figs. 4C, 9D) JJ Exine thin, 0.8 um: P. erecta (Figs. 4D, 9E) DD Vallae fine, in optical cross-section rounded, tectum perforatum E Vallae transversal, extremely fine; operculum extremely narrow and does not cover the colpus opening; tectal perforations small, but visible in LM (ph-objectives); pollen grain always prolate, P/E= 1.3, longest axis 44 um: Agrimonia F The surface gives the impression of being smooth: A. eupatoria (Figs. 1A, 8A) FF Groups of vallae forming slightly elevated parts across the intercolpium: A. odorata (Figs. 1B, 8A) EE Vallae submeridional to subtransversal, in optical cross-section tall, frequently short, anastomosing, placed close to each other, tectum perforatum usually visible in LM; the surface may give the impression of being uneven; operculum short, does not cover the colpus opening; pollen prolate in equatorial view sometimes rhomboidal: Rosa: Longest axis 25.4 um, exine 1.7 um: R. rubiginosa (Figs. 5D, 9K) Longest axis 32.5 um, exine 1.2 um: R. pimpernellifolia (Figs. 5E, 9L) Longest axis 27.3 um, exine 1.5 um: R. canina (pollen grain sometimes sphaeroidal) (Figs. 9J, 5C) AA Tricolporate pollen without operculum B Clavate-baculate, echinate C Clavate-baculate, sculpturing elements basically constricted; striation and tectal perforations frequently covered by clavae/bacula; longest axis 28.5 um: Rubus chamaemorus (Figs. 6A, 10B) CC Microechinate-echinate, tectal perforations not visible in LM; colpus transversal; longest axis 16 um: Filipendula D Sculpturing elements acute: F. ulmaria (Figs. 2F, 8H) DD Sculpturing elements obtuse: F. vulgaris (Figs. 3A, 8I) BB Rugulate-microstriate, psilate: Mespilus, Cotoneaster, Alchemilla C Rugulate-microstriate, sculpturing elements extremely short, braided together; tectal perforations may be indistinct; colpus long, PAI=0.01, costae colpi and membrana granulata always absent, longest axis 35.5 um, exine thick, 2.3 um: Mespilus germanica (Figs. 4A, 9B) CC Rugulate to psilate, tectal perforations very small, costae colpi and membrana granulata usually present; columellae distinct: Cotoneaster Longest axis 29.9 um: C. niger (Figs. 2B, 8E) Longest axis 31.1 um: C. intergerrimus (Figs. 2A, 8E) CCC Psilate, sculpturing elements usually absent, but scattered echinae, scabrae or short, low vallae may occur at the intercolpium; colpus edge with numerous bladderlike vaginations in the equatorial area; polar projection of pollen grain usually triangular; columellae distinct; tectal perforations not observable: Alchemilla D Columellae in the middle of the intercolpium 1.5x as high as at the colpus edge: A. alpina (Figs. 1D, 8C) DD Columellae in the middle of the intercolpium 2.5x as high as at the colpus edge: A. acutiloba, A. globra (Figs. 1C, E, 8B) BBB Striate C Vallae coarse, parallel, distant, in optical cross-section basically broad and acute; tectal perforations not observable: colpus with distinct bridge: Geum D Vallae always straight, persistent and meridionally arranged; longest axis 27 um: G. rivale (Figs. 3D, 8L) DD Vallae sometimes curved and not persistent, grains with straight and parallel vallae most common, longest axis 21 um: G. urbanum (Figs. 3E, 8L) CC Vallae fine D Vallae double, curved and short, distributed as parallel pairs: Crataegus Longest axis 29 um: C. monogyna (Figs. 2C, 8F) Longest axis 35 um: C. oxycantha (Figs. 2D, 8F) DD Vallae simple in optical cross-section, rounded; tectum perforatum E Vallae indistinct, perforations large, approximately square, giving the exine a net-like appearance; colpus short, polar area large, PAI 0.23-0.29; membrana granulata and constricted colpus are frequently present: Rubus (+R. chamaemorus Figs. 6A, 10B) F Colpus membrane with numerous large granules, colpus without constriction; pore never present: R. arcticus (Figs. 5F, 10A) FF Perforations less numerous than in the previous species: R. saxatilis (Figs. 6C, 10F) EE Vallae distinct F Vallae high, frequently short, distribution submeridional to subtransversal; perforations small; pollen grain prolate, intercolpium rhomboidal in equatorial projection: the surface has usually an uneven appearance: Rosa: Longest axis 27.3 um, exine 1.5 um: R. canina (pollen grain sometimes sphaeroidal) (Fig. 5C) Longest axis 32.5 um, exine 1.2 um: R. pimpernellifolia (Fig. 5E) Longest axis 25.4 um, exine 1.7 um: R. rubiginosa (Fig. 5D) FF Vallae low and narrow: Dryas, Malus, Prunus, Sorbus G Vallae straight, parallel and moderately branched H Perforations distinct, size and mutual distance uniform; pore usually distinct, colpus edge usually ruptured in the pore area: constricted colpus most common; vallae submeridional and without dense structure: Sorbus: Longest axis 22.0 um: S. aucuparia (Figs. 7D, 10K) Longest axis 29.0 um: S. arranensis (Figs. 7C, 10J) S. hybrida (Figs. 7E, 10K) HH Perforations may be unobservable in LM; vallae submeridional to subtransversal and with dense structure I Vallae submeridional; pollen grain oblate; longest axis 26.8 um: Prunus avium (Figs. 4F, 9G) II Vallae submeridional to subtransversal; pollen grain usually sphaeroidal; longest axis 31.1 um: P. spinosa (Figs. 5B, 9I) GG Vallae curved, branched, anastomosing; tectal perforations numerous H Vallae short, broad; strongly curved, rapidly narrowing towards the ends (vermiculate), distinctly opaque; costae colpi and constricted colpus present; longest axis 31.0 um: P. padus (Figs. 5A, 9H) HH Vallae moderately curved, opacity less prominent. colpus long PAI 0.10; costae colpi present; longest axis 27.0 um: Malus sylvestris (Figs. 3F, 9A) PAI 0.16; costae colpi absent; longest axis 22.0 um; Dryas octopetala (Figs. 2E, 8G)