Anne - hope my words weren't interpreted as critical of the quality of this piece - it is a fine bowl and I'm envious.
your 'all-over cutting' may well be a reference to American Brilliant Period (ABP) style of cutting - though I doubt this piece qualifies as it lacks being 'smothered' by a variety cuts so favoured by the States c. 1890 - 1920. 'Mitres' are reference to cuts that appear as deep V cuts in the surface - not a fussy detailed cut as with pin wheels, daisy wheels, or cross hatching etc., rather just a plain cut with the edge of the grinding wheel to create the V. Good to hear this is lead composition glass - in addition to making the cutting easier, lead oxide in the metal makes for that wonderful ring when flicked.
Cross-hatching when confined to the tops of large relief diamonds is then described as strawberry diamonds, and appropriate it is too, and this description of 'strawberry diamonds' originates c. 1800. As with much else in life, time was that cutters would spend time cutting multiple small diamonds, though this appears to have been economised by simply cutting shallow cross-cut lines thus giving the appearance of many small diamonds.
So, in effect your bowl is showing ............. deep mitres, the daisy wheel and large areas of cross-cut shallow lines. As with the radial cut star which appears underneath bowls etc., your cross-cuts underneath are decorative, but may also hide - as does often the radial arm star - defects in the original blank, or scars from the original mould. It may also be the case, as occurred with much ABP material, that the cutting originated with someone other than the maker of the blank.
Some of these cut patterns originated a long time ago, but their appeal means they had a long life too. Some cutting can be grouped - the ABP as mentioned is recognizable .................. the massively heavy geometric mitred cuts of VSL from c. 1905 to 1940s (is theirs mostly on coloured glass?) ............. the less heavy abstract/geometric deco inter war cutting in the U.K. mostly it seems on clear glass bodies of traditional shapes .............. Scandi cutting (all those fishing nets and nubile women) - plus central European very heavy cut to clear (Moser etc.)
Your bowl would seem not to fit easily into these categories - so really I'm as confused as you, other than thinking I've seen Czech. material with large areas of cross hatching - but I have to admit truthfully to being not a lot wiser. Is the glass very white and clear, or of a grey hue and with possibly some stones?
The undulating rim might be thought of as nouveau - sinuous and floral in outline - but I'm not being serious, and regret don't think we are going to nail this one down. Seeing pieces on the screen only is never satisfying in terms of assessment, but we sometimes have to live with just these pix. Is the circular clear window underneath the foot, a depression where some mould marks might have been removed, do you think?
Agree, jardinière may be made from virtually any material, it's just that I'd suggest this was made for decoration or fruit rather than four kilos of garden soil and an Aspidistra