Sources

Clement tangelo (opens in a new tab)

Givaudan Citrus Variety Collection at UCR

https://citrusvariety.ucr.edu/crc2603 (opens in a new tab)

Accessed September 18th

New Citrus Hybrids (opens in a new tab)

Walter T. Swingle, T. Ralph Robinson, and E. M. Savage · United States Department of Agriculture · 1931-08

https://upload.wikimedia.org/wikipedia/commons/5/58/New_citrus_hybrids_%28IA_newcitrushybrids181walt%29.pdf (opens in a new tab)

The Clement tangelo section says grapefruit crosses using Clementine as pollen parent produced a diverse group whose fruits were inclined to be loose-skinned and rather puffy; it identifies Clement tangelo as a selected member. This is an offspring-group description, not a trait claim for Algerian Clementine.

Accessed September 20th

The Citrus Industry, Vol. I (2nd ed.), Chapter 4: Horticultural Varieties of Citrus (opens in a new tab)

Robert Willard Hodgson · University of California, Division of Agricultural Sciences · 1967

https://web.archive.org/web/20110516091624/http://lib.ucr.edu/agnic/webber/Vol1/Chapter4.html (opens in a new tab)

Chapter 4, Clement tangelo profile. Hodgson reports a Duncan grapefruit × Clementine hybrid produced in Florida in 1914 by W. T. Swingle and introduced in 1931. The book passage is an attributed historical account; it does not revise the existing parentage tree or establish current accession identity. Wayback is the retrieval route.

Accessed October 3rd