| Within-flower transfer of pollen from anthers to stigma was achieved by depressing the keel petal of newly opened flowers using fine forceps. |
| Flowers open wide in full sun, and with the central yellow anthers, the effect is striking. |
| For estimation of pollen production, two anthers from each flower bud were examined. |
| There are usually about 20 stamens, with anthers that range from pink to burgundy in color. |
| The actinomorphic, tubular flowers of both species are pale blue to mauve, with epipetalous anthers. |
| Each flower has a lemma and a palea at its base, and contains two lodicules and one pistil surrounded by three anthers. |
