132 THE PLANT WORLD 



BRIEFER ARTICLES. 



A Green Triliium. 



Among a number of large-flowered trilliums {TrilUiun grandifioruin 

 Salisb.), gathered recently for decorative purposes near Winona, one 

 plant was found in wliicli all the flower organs had reverted to green 

 leaves. There snould be five of these, one each for calyx, corolla and 

 pistil, and two for the six stamens. But a study of the top view in the 

 accompanying drawing shows that there are here six whorls. How is 

 this extra whorl to be accounted for? Professor Rodwell of our high 

 school has preserved this plant in formalin solution, and the writer's 

 thanks are due him for the loan of the specimen, from which the accom- 

 panying drawing was made by a student. The figure in the lower right 

 corner is a top view of an ordinary triliium flower. — John M. Holzinger, 

 Winona Normal School, Winona, Minn. 



A Standard College Entrance Option in Botany. 



At the meeting of the Society for Plant Morphology and Physiol- 

 ogy, held at Baltimore, December 28, 1900, a committee was appointed 

 to consider the formulation of a standard jcollege entrance option in 

 botany. The committee consists of Professors Ganong, Lloyd and At- 

 kinson. A provisional report has been prepared, copies of which may 

 be obtained on application to the chairman, Professor Ganong, North- 

 ami:)ton, Mass. The following is a brief outline of the report: 



The full year option to count as one unit for entrance, consists of 

 two half year courses, either of which may be offered as an option for a 

 half unit. 



I. General Principles of Anatomy, Morphology, Physiology and 

 Ecology. 



II. The Natural History of the Plant Groups, with classification. 



For the first haK year the following topics are suggested: A. An- 

 atomy and Morphology: The seed, structure, germination and food 

 supply; the shoot, anatomy of stem, leaf and bud; the root, anatomy 

 and structure of tissues; the flower, structure and function; the fruit, 

 structure and relation to flower; and the cell. B. Physiology: Role of 

 water in plant, photosynthesis, respiration, digestion, irritability, 

 growth and fertilization. C. Ecology: Modifications of parts for spe- 

 cial functions, dissemination, cross-pollination, light relations of green 



