242 



it will be easily understood how interesting it was to me to at 

 last definitely know that this plant actually grew in the State. 



SHORTER NOTES 



Double Flowers in Hemerocallus fulva, Lixn. — Because 

 such never seems to have been previously recorded for the day 

 lily {Hemerocallus fulva L.) and seems to have been infrequently 

 observed in the Liliaceae as a family, the writer reports double 

 flowers in this species. Observations based on six specimens 

 collected from the premises of Prof. F. C. Nipher, Kirkwood, 

 Mo., are given. 



The perianth consists of 12 distinct segments, alternating 

 with and overlapping one another. Stamens 12, two of which 

 are borne on opposite segments of the perianth. Occasionally 

 a small number of the stamens are aborted. Styles two in 

 number, adjacent and united, but mostly aborted to a C-shaped 

 or claw-shaped appendages. The plant is quite typical with 

 regard to color. 



Dissections revealed no sign of insect injury, etc., to which the 

 double flowers might be attributed. The ovules appeared to be 

 unusually minute. Observers of the particular group of plants 

 in previous years stated they had never noted double flowers. 

 Since it was found that botanical terminology supplies no 

 technical term descriptive of this particular coj|dition, there is 

 suggested the term diplous (Greek — literally two-fold), as being 

 advantageous. — N. M. Grier. 



REVIEWS 



McAtee's Natural History of the District of Columbia* 



The study of the vegetation or fauna of any area in the Eastern 

 States is so likely to be bound up with the history of the region 



* McAtee, W. L. A sketch of the natural history of the District of Columbia, 

 together with an indexed edition of the U. S. Geological Survey's 19 17 map of 

 Washington and vicinity. Pp. 1-142 -|- 5 maps. Price $2.15 postpaid. May, 

 1918. 



Published as No. i of the Bulletin of tlu' Biological Society of Washington and 

 to be secured only from them by ])urchase. 



