24 Feb. 18 (Tues.) The golden-rud at Spencer field (500 ft.) is S. rosenoidis Porter (S. monticola J+G.), related to S. puberula but with smooth stem except for inflorescence, and smooth achenes. S. Randii of the northern mountains has much narrower leaves. Cyperus melanostachys is greatly variable, and apparently represented in California and Texas. The Mexican material is characterized by achenes with rows of two embryos. E. similis by an elongated chine without ribs or nerves. E. flavescens by a short achene with inflorescent cells; sometimes with raised horizontal crowbars. Feb. 19 (Wed.) Spent day at N.Y. Botanical Gardens. Cyperus mel- nostachys is extremely variable. C. diandrus, the plant with fuzzy spikelets, represented by the type. C. similis, no specimens from Georgia, but most of the southern material identical with our material recognized as S. similis. The type of Carex alata (from northern Georgia) has very large approximate spikelets. The aster (A. caesius) collected by Harpur in Alabama, is partly a distinct species related to A. laevis and A. purpureascens. Vaccinium simulatum is a large-leaved, fleshy plant. Feb. 20 (Thurs.) Continued Cyperus melanostachys. I should call the material from western U.S. C. diandrus var. capistratus Britton and C. similis should be called C. diandrus var. castaneus. For these three