\ 



5 



well fitted. In decorative art all are familiar with the panel pic- 

 tures and the mantel ornamentation In which our common cat- 

 tail plays so conspicuous a part 



The most natural classification of the species of Typha that I 

 have seen is the arrangement of Dr. P. Rohrbach, of Berlin, pub- 

 lished about the year 1S70.* As this paper has never been 

 translated into English, so far as I am aware, except in the ab- 

 stract of it given by Dr. Engelman,f it may be new to most read- 

 ers of the Bulletin. I therefore reproduce Rohrbach's sum- 

 mary, so that our North American species may be assigned to 

 their proper' places : 



A.— FRUIT WITH A LONGITUDINAL FURROW, BURSTING IN WATER ; 



SEED WITH A SEPARABLE OUTER COAT. 



I. — Stigmas Spatulate-Lanceolate. 



a. Female flowers without bracts. 



1. Stigmas longer than the perigonial hairs. 



T. iatifolia^ L, T. Capaisis, Rohrbach. 



2. Stigmas as long as the perigonial hairs. 



T. Shuttleivorthiiy Koch at Sond. 



b. Female flowers with bracts. 



1. Stigmas longer than the perigonial hairs. 



T, Schimperi^ Rohrb, 



2. Stigmas as long as the perigonial hairs. 



Z. Miielkriy Rohrb. 



11. — Stigmas Linear. 



a. Female flowers without bracts. 



T, giaum^ Godr. 



b. Female flowers with bracts, 



1. Bracts and perigonial hairs of the same length. 



T, angustifolia^ L. T. Domingensis^ Pers. T, yavmtica^ Schnitz. 



2. Bracts longer than the perigonial hairs, nearly as long as the stigmas. 



T. angusfata^ Bory et Chaub. 



B.— FRUIT WITHOUT A LONGITUDINAL FURROW, NOT BURSTING IN 



WATER ; SEED WITH OUTER COAT NOT SEPARABLE. 



I. Stigmas spatulate-lanceolate — female flowers without bracts. 



T. stenophylla^ F. et M. 



IL Stigmas linear — female flowers without bracts. 



/- 



T. Laxmannij Lepech. 

 T, Hatisshiechtiiy Rohrb. 



* Verliandl. Bot. Verein, Brandenb. xi., 67. 

 i Am. Jour. Sc. and Arts for Nov., iSji. 



