there are two proper names in the English language that rhyme with orange. They are Blorenge and Gorringe. The former is the name of a hill in the UK and the latter is a surname in Britain. Both are accepted as English proper nouns.
Sporange rhymes with orange.
It is a very rarely-used version of the word "sporangium", which is the botanical term for a part of a fern or a similar plant. Sporangium/sporange also means the part of a plant (or fungus) that contains the spores.
