288 M. WICHURA ON THE WINDING OF LEAVES. 



Syntrichia : teeth of the capsules, to the right. Encalypta strep- 

 tocarpa, Hedw. ; Barbula rigida : walls of the capsules, right. 

 Barbula anomala, Br. & Sch., furnishes a solitary example of a 

 Moss with the teeth of the capsule winding to the left. From 

 the notice on this plant in the ( Europaischen Laubmoose/ 

 however, " Peristomii denies complures ad dextrum (i. e. to the 

 left in the Linnaean sense) convoluti" it would appear that in- 

 stances of the opposite winding also occur, and it would be 

 interesting to discover whether the fruit-stalks also are wound 

 in the contrary direction when the teeth of the capsule are* 

 I have not seen this plant. 



57. 



Fiiices. Lygodium circinatum, Swtz.; L. salicifolium, Presl; 

 L. polymorphism, H. B. & K. : midrib of the frond without defi- 

 nite order, sometimes to the right, sometimes to the left. 

 Palm* saw two stems of Ophioglossum japonicum (with which 

 I am unacquainted) wound round one another toward the right, 

 that is, to the left in our terminology. 



58. 



Lycopodiaceas. Lycopodium contiyuum, Kl. ; L. mendiocca- 

 num, Raddi ; L.inundatumi stem-leaves slightly wound, with 

 prevailing but not exclusive direction toward the right. 



59. 

 Graminacese f. 



1. Oryzeae. Caryochloa chilensis, Spr. : awns right. 



2. Phalaridece. Phleum, Alopecurus, and Beckmannia : stem- 

 leaves constantly left. Baldingera arundinacea, Gaert. ; Holcus 

 lanafuSy L. ; H. mollis, L. ; Hierochloa borealis, R. et S. : stem- 

 leaves right. Anthoxanthum avenaceum, Retz. : awns right at 

 the lower part. For the species of Phalaris see 44. 



3. Panicea. Setaria verticillata, Beauv. ; S.viridis, Beauv. ; 

 S. glauca, Beauv. ; Pennisetwnfasciculatum, Trin. : stem-leaves 



* Ueber das Winden dcr PJJanzen. Stuttgart, 1827, pp. 41, 42. 



f See Alex. Braun on the Italian Rye-grass, ' Flora,' 1834, Jahrg. xvii. 

 Bd. 1. 262, 263, whose attention was already directed to the property of Grass 

 leaves and the awns, of curling in definite directions. 



