8o HOW TO KNOW THE MOSSES 



mon, and the leaves are crisped when dry, so that 

 the steins do not look smooth and slender. Georgia 

 pellucida (p. 154) also has small erect capsules and slen- 

 der stems, but its favorite habitat is decaying wood; it 

 less frequently grows on the ground, and mixed with 

 the fruited plants are usually sterile stems with larger 

 leaves arranged at the tip of the stem in a cup-like 

 cluster containing gemmae, or brood bodies capable of 

 reproducing the plants. 



b 



Ditrichum pallidum (Schrad.) Hamp. can be recog- 

 nized by the long yellow seta and slender capsule, erect, 

 or slightly inclined, sometimes becoming hori- 

 zontal when old, and by the long hair-like 

 leaves. It usually is found on bare ground in 

 woods. For comparison with other mosses 

 having hair-like leaves see Trematodon (p. 

 77), Dicranella (p. 84), Weisia (p. 100), and 

 Leptohryum (p. 126). 



Ditrichum -^^^^^> Ontario to the Gulf of Mexico, west to 

 pallidum, Kansas; Europe; Asia; Africa. 



3. SAELANIA Lindb. (Sae-lan-i-a) 



A genus containing but one species found on earth 

 and in crevices of rocks, especially limestone, in moun- 

 tainous or hilly regions; rare. Named after Saelan, a 

 Scandinavian moss student. 



