In Europe as in the USA Monsanto, the original developer of this weedkiller, is still the main supplier of glyphosate, even though their patent expired some years ago. They supply it under the brand name Roundup; this includes a surfactant and spreading agent, which help in applying it.
If the glyphosate is applied to the leaves of a bermuda clover plant, all parts of the plant including the attached underground bulbils will die. But any detached bulbils which do not have any above-ground parts will survive (glyphosate is inactivated by contact with the soil).
Glyphosate is not a magic potion (in the UK some weeds of farmland such as willowherb have developed strains that are highly resistant to it, and the same has happened in the USA; there seems also to be some evidence that its use on the same spot year after year, as happens on many arable farms, may in the long run damage soil structure). But as weedkillers go it is remarkably non-toxic - one formulation is even authorised here in the UK for use on wetlands and water plants, although stream and pond creatures are very highly susceptible to almost all other herbicides and pesticides. Used carefully and for specific hard-to-deal-with problems - such as Oxalis pes-caprae - glyphosate can be a real boon.