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. 



Filices. — Lygodium circinatum, Swtz.; L. salicifolium, Presl; 

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

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

 Palm* saw two stems of Ophioglossurn japonicum (with which 

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

 that is, to the left in our terminology. 



§58. 



Lycopodiaceaj. — Lycopodiwn contiguum, Kl. ; L. mendiocca- 

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

 prevailing but not exclusive direction toward the right. 



§ 59. 

 Graminaceae f. 



1. Oryzece. — Caryochloa chilensis, Spr. : awns right. 



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

 leaves constantly left. Baldingera arundinacea, Gaert. ; Holcus 

 lana^us, Li.; 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. Panicece. — Setaria verticillata, Beauv. ; S. viridis, Eeauv. ; 

 S. glauca, Beauv. ; Pennisetum fasciculaium, Trin. : stem-leaves 



♦ Ueher das W'mden der Pfianxen. Stuttgart, 1827, pp. 41, 42. 



t See Alex. Braun on the Italian Rye-grass, ^ Flora,' 1834, Jalirg. xvii. 

 Bd. 1 . 262, 2G3, whose attention was already directed to the property of Grass 

 leaves and the awns, of curling in definite directions. 



