Manasara 13.38

13.38

dalamadhyārdhakaṃ pañcadvisaptāṃśaṃ galodayam
uttaraṃ cārdhakampaṃ syāttadūrdhve ca saroruham

The middle of the petal is half; five, two, seven parts is the rise of the neck; / the beam and the fillet are half; and above it is the lotus;