The curtal sonnet is a form invented by Gerard Manley Hopkins, and used in three of his poems.
"Pied Beauty" reads as follows, showing the proportional relation to the Petrarchan sonnet (not included in the original: the only indication of the form is in the preface).
Accents indicate stressed syllables: 12/2 = 6 9/2 = 4+1/2 Hopkins's account of the form comes from the preface to his Poems (1876–89).
[3] Lois Pitchford examines all three poems in detail in relation to the form as Hopkins imagined it.
Poets Lucy Newlyn and R. H. W. Dillard have written examples that serve as explications of the form.