Displaying 1 - 19 out of 19 Object(s)
| Term | Definition | |
|---|---|---|
| Binucleate pollen | Referring to pollen grains that have two nuclei when shed from the anthers. Compare with trinucleate pollen. | |
| Colporate pollen | Referring to a pollen grain with composite apertures, each consisting of a furrow and a pore. | |
| Differentiated pollen | Same as fodder pollen. | |
| Fodder pollen | Pollen that does not germinate and serves as a pollinator reward. This has been demonstrated in Couroupita guianensis and Lecythis pisonis (Mori et al., 1980) and is hypothesized for other species that appear to have staminodes on the inside of a flat hood or in stamens on the ligular side of the staminal ring. |  |
| Fodder pollen | Pollen that does not germinate and serves as a pollinator reward. This has been demonstrated in Couroupita guianensis and Lecythis pisonis (Mori et al., 1980) and is hypothesized for other species that appear to have staminodes on the inside of a flat hood or in stamens on the ligular side of the staminal ring. | |
| Globally symmetrical pollen | In the Malpighiaceae, pollen with the pores not all in the same plane and the ectoapertures, if present, variously oriented. | |
| Monosulcate pollen | Referring to a pollen grain with one groove or furrow. | |
| Pollen | Male reproductive structures contained within the anther of the stamen and usually released at anthesis. Same as microgametophytes. |  |
| Pollen drop | A small drop of liquid similar to nectar that accumulates on the apex of the ovule of gymnosperms. The wind-dispersed pollen of gymnosperms lands on the pollination drop and when it dries the pollen is carried into the ovule where it eventually fertilizes the egg to produce an embryo. See A in the attached figure. |  |
| Pollen guide | Markings on a flower that apparently serve to guide pollinators to pollen which is the reward they receive from the flower. Some are visible to humans, but others are apparent to humans only through ultraviolet photography. |  |
| Pollen guide | Markings on a flower that apparently serve to guide pollinators to pollen which is the reward they receive for visiting the flower. Some pollen guides are visible to humans, but others are apparent to humans only through ultraviolet photography. |  |
| Pollen sacs | See anther thecae. | |
| Pollen syntricolpate | A type of pollen in which the colpi unite at both poles of a pollen grain. |  |
| Pollen syntricolpate | A type of pollen in which the colpi unite at both poles of a pollen grain. | |
| Radially symmetrical pollen | In the Malpighiaceae, referring to pollen with pores on the equator and colpi, if present, oriented at right angles to the equator. | |
| Secondary pollen presentation | The presentation of pollen to the pollinator in a place other than the anther; e.g., on the style of Vochysiaceae. |  |
| Secondary pollen presentation | The presentation of pollen to the pollinator in a place other than the anther. |  |
| Sectile pollen | Referring to the aggregate clumps of soft, granular pollen which distinguishes some species of Orchidaceae. In these species the pollen is easily separated and not aggregated in distinct pollinia. | |
| Trinucleate pollen | Referring to pollen grains that have three nuclei when shed from the anthers. Compare with binucleate pollen. |