74 
Betida pubescens Ehrh., var. microphylla. Thundersley Com- 
mon, Essex, v.c. 18, July 21, 1917. — W. R. Sherrin. Material 
scanty, but it looks right. Catkins unusually stout for this variety. 
I had not seen it before from so far south. — E.S.M. 
B. (Ref. No. 2951). Root from boggy, peaty ground, 
at about 2800 feet, descending from the Lochnagar tableland 
towards the Dhu Loch, S. Aberdeen, v.c. 92, July 1906. Grown 
in garden, West Monkton, May 21, 1917. In the wild state this 
was a very small shrub, only a few inches high, with hairy leaves, 
strongly suggesting a cross between B. nana and B. pubescens (1 
have never found the latter so high up). It has now grown into 
a good-sized bush, nearly six feet in height, but has never pro- 
duced catkins. The leaf-outline has become much less crenate, 
and it might well pass for B. pubescens , var. microphylla-, but I 
still think that it may be a per-pubescens form of x B. alpestris Fr. 
— Edward S. Marshall. 
Alnus glutinosa Gaertn., var. macrocarpa Loudon. Beecham- 
well Fen, W. Norfolk, v.c. 28, July 30, 1917. Coll. J. E. L. and 
J. L. Luddington. Largest pistillate catkins (green) 27 mm. x 
18 mm. I have a sheet so named by Dr. Moss, gathered with 
him at Chippenham Fen, Cambs., Sept. 25, 1912, when, as I 
understood him to say, he found the var. for the first time in 
England. The tree was a small one, about 10 ft. high, standing 
isolated in boggy Molinia fen. Near by was a wood in which 
occurred Prunus Padus. The largest pistillate catkins measure 
(dry) 27 mm. x 13 mm., but there is considerable variation of 
size. The sheets now submitted from Beechamwell, W. Norfolk, 
in a similar situation, are from two trees about 15 ft. high on the 
margin of a wood bordering the fen. Here also grows Prunus 
Padus. The largest pistillate catkins, gathered July 1917, mea- 
sured (green) 27 mm. x 18 mm., but were not at that date 
mature, so that there were a good many smaller ones amongst 
them. On Sept. 13, 1917, I gathered at Old Park Wood, near 
Fishbourne, W. Sussex, from three young trees about 12 ft. high, 
pistillate catkins which come very near the other measurements, 
viz. 26 mm. x 17 mm. (green). Again there was considerable 
diversity of size. Of these latter I can only send a couple of 
sheets for comment. In both sets the extreme measurements 
considerably exceed those given by Dr. Moss for var. typica. At 
Ambersham Common, W. Sussex, v.c. 13, on Sept. 15, 1917, one 
tree had fruiting catkins 12 — 13 mm. long (green) ; another bore 
catkins 15 — 17 mm. long. Two Hitchin sheets in my herbarium, 
gathered in Oct. 1912, have the largest catkins measuring (dry), 
