AMBLYSTEGIUM COMPACTUM IN BRITAIN 179 
en Pom for a rere of setirng eye in respect of the —— 
of this a statement of Berggren’s may 
es (Musci 7 athe Giieslinymeced : 85) as to the antoioons 
Oncophorus virens Brid. He states that the fruit of that moss is 
only sparingly produced, while the flowers are frequent; and that 
fact that Waco. in one of his Tre of Drumm aoa rare Amer., 
has made the following manuscript note: ‘‘ 188, . Am. Hyp- 
num ‘compactum Br. & Sch. pers: neontaa Baral almost rostel- 
pean plant may have ae deserted as dioicous in ‘aioe! the male 
flowers a been overloo 
ichatial bracts, I ha examined a sgn of the 
Cheney, is ‘ percurrént or excurrent,’’ this cannot be held a con- 
stant sags character, since it is wanting in the type spe cimen. 
abitat. This would not of course be held in itself to form 
a conclusive character, but it seemed of some importance in view 
of the fact that all the known European stations (I believe) are on 
limestone rock or tufa, while the description of the habitat of the 
American plant as arboreal is usually unqualified. owever, 
n (Cat. Canad. Pl, vi 21) gives under 4. compactum various 
localities, including such stations as “ the n moist 
: ks” (two localities), ‘on t fa mounds at 
Banff, Rocky Mts.” 4 pri retcit Kindb. is described from two 
localities, in each case “on flat ne rocks — hos ez 
dripping of water.” And 4, cabinet is recorde ‘* base 
trees, Clinton, and wet rocks near the w hiripool, aaa 
Fa = ” Thus the apparent difference in habitat is quite cleared 
T may add that an a of A. dissitifolium Kindb., and 
both plants to a compactum. The cite at best a ge 
and ser and some of the characters as at en ? the Samstag 
are by n no means born. e out by the specimens A. subcompactum, 
which is described as ath thicker stems, and longer and larger 
