Serological Relationships of Bromus L. and Boissiera Hochst. ex Steud

Serological techniques have been used to compare the seed albumin and globulin fractions of species of Bromus L. and Boissiera squarrosa (Soland.) Nevski. Compared with other grass genera, Boissiera squarrosa gives a very strong reaction with Bromus antisera, resembling the reactions of Bromus section Bromus species. It is considered that this evidence of serological relationship, together with evident morphological resemblance and the same basic chromosome number, require the transference of the species to the genus Bromus . It is therefore included in that genus under the name Bromus pumilio (Trin.) P. Smith, comb. nov. The significance of reactions with Bromus antisera by seed extracts of species in the tribe Hordeae is discussed.