HYPNEI. 77 



c 



ft. BEA.CHYTHECIUM, Schimp* 



3. H. salebrosum, Hoffm. ; stem decumbent ; branches 

 erect; leaves crowded, pointing in every direction, lanceolate, 

 acuminate, plicate, toothed above; nerve reaching a little 

 above the middle ; fruitstalk even ; sporangium cernuous ; lid 

 acutely conical. Hook. % Wils. t. lv.; Eng. Bot. t. 2800.; 

 Grev. Scot. Crypt. Ft. t. 184; (Moug. % Nest. n. 834.) 



On rocks, walls, or the roots of trees, on the ground in 

 woods, and on grassy, sandy banks. Apparently rare, though 

 found from Scotland to Sussex. Fruit ripe in autumn. 



Monoicous; forming dense, pale-green tufts, 23 inches 

 long, decumbent with erect, somewhat pinnate branches, which 

 are without any down; leaves ovato-lanceolate, elongated, 

 strongly acuminate, grooved rather than plicate, serrated above, 

 and indeed sometimes to the base ; nerve reaching more than 

 halfway up ; cells narrow, hyaline ; margin slightly recurved ; 

 fruitstalk about an inch long; sporangium arcuate, cernnous, 

 witli a sharp conical lid. 



Many varieties are recorded by Schimper through which it 

 approaches H. glareosum on one side and H. rutabulum on the 

 other. The leaves, though strongly acuminate, are not twisted, 

 as in H. glareosum, nor is the acumination so long ; besides 

 which, they are more manifestly serrated. From H. albicans it 

 differs in colour and the serrated tips of the leaves ; from H. 

 lutescens, manifestly in its smooth fruitstalk. The specimens 

 in Moug. and Nest., at least in my copy, approach very near to 

 H. glareosum, the tips of the leaves being very slender and 

 scarcely at all serrate. Their reticulation is, however, much 

 closer. 



* Distinguished from the last by Schimper on account of the looser areolation 

 and evident primordial cells. 



