HYPNKI. 89 



. HHYXCOSTEGIUM, Scliimp. 



19. H. Teesdalii, Sm. ; stem creeping, filiform, slightly 

 branched; branches short; leaves loosely set, lanceolate, 

 obscurely serrate ; nerve reaching almost to the tip or excur- 

 rent ; fruitstalk rough ; sporangium ovate, cernuous ; lid ros- 

 trate. Hook. $ mis. t. Iv. ; Eng. Bot. t. 202, /. 2942, /. 2. 



On trunks of trees and rocks, especially near waterfalls. 

 Bearing fruit in spring and early summer. 



Monoicous ; forming velvety dark-green patches with 

 creeping stems, from which spring short, thread-shaped 

 branches ; leaves loosely set, rigid, spreading, often two- 

 ranked, lanceolate, with a thick nerve, which reaches nearly 

 to the tip, or extends beyond it; perichsetial leaves scarcely 

 covering the vaginula; fruitstalk not half an inch long, rough ; 

 sporangium ovate, cernuous, with a rostrate lid nearly as long. 



A much more rigid plant than the last. It is found as far 

 south as Teneriffe, and extends as far north as Scotland. 



b. Fruitstalk even. 



*- Lid rostrate. 

 8. EURUYNCHIUM, ScJiimp. 



20. H. myosuroides, L. ; stem creeping, bearing many 

 dendroid branches ; branches and branchlets curved, secund ; 

 leaves ovato- acuminate, slightly serrated ; nerve reaching more 

 than halfway up; perichsetial leaves squarrose; fruitstalk even; 

 sporangium inclined, rarely erect ; lid rostrate. Hook. Wils. 

 t. xxv.; Eng. Bot. t. 1567. (Moug. Nest. n. 330.) 



On stones, rocks, and trunks of trees. Common. Ma- 

 turing the fruit in winter. 



Dioicous ; forming large, soft, pale-green tufts ; stems 

 creeping, bearing erect, tree-like or fasciculate branches ; 

 leaves spreading, ovato-lanceolate, acuminate, slightly serrate ; 



