ANTHOCEROS. 503 



running across. The frond is — as usual in the genus — repeatedly 

 forking, the forks, however, are not divided and free (as in some 

 exotic species), but connate with each other by means of a thin 

 lamina; a cross-section of the plant shows, therefore, thin and 

 thick parts regularly alternating, the thicker being the costa, 

 which also bears much larger caverns lying over a solid base of 

 unbroken tissue. In both species the frond runs out into numerous 

 laciniae, which in the vicinity of the vegetative apex are smaller 

 and shorter, while older and longer lacinise surround them, giving 

 the margin a very irregular and torn appearance. Ant/i. lavis is 

 a very much stouter plant, very thick and fleshy in living speci- 

 mens, and the margin is not laciniate, but merely divided into 

 thick rounded lobes. Spores and elaters are very similar to those 

 of A. jjuncfatus ; but the male organs of A. Sfahleri are very re- 

 markable, each cavity containing up to 20 antheridia on very 

 short stalks." — Stephani. 



The description is taken from Stephani's notes in " Rev. 

 Bryol." for 1895. 



Description of Plate CCXXVIII. — Figs. 1-3. Plants natural 

 size. 4. Fertile plant x. 5. Plant x 11. 6. Portion of frond 

 X 290. 7. Cross-section of frond x 16. 8. Calyptra x 16. 

 9. Cross-section of calyptra x 16. 10. Androecium x 64. 

 11. Antheridia x 85 (Foulshaw, G. Stabler). 



