The yellow chrysanthemum is the official flower of Sigma Alpha, a professional agricultural sorority.

Gamma Sigma Alpha, ΓΣΑ (academic achievement in fraternities and sororities)

You ask me any question you like: how far it is to Sigma Alpha, whose house you robbed last night, anything at all.

Sigma Alpha is a professional sorority, promoting agriculture on a local, state, and national level.

Sigma Alpha Iota's Francis Thorne page (archive)

Sigma Alpha is a professional agricultural sorority that promotes scholarship, leadership, service and fellowship among its members.

Since that time, Sigma Alpha has become a national organization consisting of over 70 collegiate chapters, with undergraduate and alumnae members.

The sorority was named Sigma Alpha for "Sisters in Agriculture."

The objective of Sigma Alpha is to promote its members in all facets of agriculture and to strengthen the bonds of friendship among them.

"Sigma Alpha Lonely"