The affix denoting 'fruit' is optionally elided by lup after the word jambu,
The word वा is understood here. The difference between 'luk' and 'lup' elision is that in the case of 'lup', there is concordance of gender and number. See sutra (I. 2. 5I). Thus जम्बू + अञ्लुप् = जम्बूः, as, जम्बूः फलं ॥ Optionally जम्ब्वाः फलं = जम्बु फलं, or जाम्बवं ॥
Vart:- There is lup-elision of the affix denoting fruit, after the words expressing deciduous plants which wither away as soon as the fruit ripens: Thus व्रीहिः-व्रीहयः, यवाः, माषाः, मुद्गाः, तिलाः ॥
Vart:- Diversely so when the affix denotes flowers and roots : as, मल्लिकायां पुष्पं = मल्लिका, नवमल्लिका जातिः; so also विदार्या मूलं = विदारी ॥ अशुमती बृहती ॥ In the above example there is concordance. By using 'diversely', this concordance does not sometime take place. As पाटलानि पुष्पाणि, शाल्वानि मूलानि ॥ So कदम्बं पुष्पं, अशोकम्, करवीरम्, बैल्वानि फलानि &c.,