Pollen Grains of Some Cultivated Plants in Nigeria - Jsrd.org

106 O. H. Adekanmbi*, O. Ogundipe
Leguminosae.
Clithoria ternalea (Linn) Plate 2, Figure 9
Grains isopolar, radially symmetrical, amb triangular, goniotreme, oblate spheroidal, 3 zone
colporate, though some of the grains are syncolpate, convex at the base; colpi 10.8 urn long,
extending through most of the length of the polar axis, constricted around the middle, widening
towards the end; granulate margins, ora conspicuous, markedly elongated transversely.
P = 14.425 _+ 3.4
E = 14.2^3.2
P/E = 1.01
Exine 1.63.urn thick, thicker towards the aperture, (1.92 urn thick) stratification distinct, nexine thick, smooth and
homogenous.
Lythraceae
Lagerstromia indica ( Linn) Plate 2, Figure 11
Grains apopolar, radially symmetrical, spheroidal, pantotreme, poly pantoporate (pores more
than IS), circular, 1.35um wide with distinct annulus, uniform in distribution
P = 23.6 ±3.4
E = 23.35 ± 3.2
P/E = 1.01
Exine 1.62 um thick, smooth homogenous, spinose, spines 4.73 um long, 1.95 urn wide at the base, blunt at the tip,
sometimes curved, borne on raised part of the exine.
Malvaceae
Hibiscus rosa sinensis (pink). (Linn) Plate 1, Figure 1
Grains apopolar, radially symmetrical, spheroidal, pantotreme, poly pantoporate (pores more
than 20) with distinct annulus uniform in distribution.
P = 45.45 _+ 3.4
£ = 45.15^3.2
P/E = 1.00
Exine 2.7um thick, stratification indistinct, crassimarginate, spinose, spines 6.75 um, 2.43 um wide at the base, blunt
apex, sometimes bent.
Hibiscus rosa sinensis (Red) (Linn) Plate 1, Figure 2
Grains apopolar, radially symmetrical, spheroidal; polypantoporate (pores more than 20) circular,
wide, with distinct annulus, uniform in distribution
P = 47.125+ 3.4
E = 46.45 + 3.2
P/E = 1.01