38 Rhodora [JANUARY 
Calamagrostis Langsdorfii, Trin., is abundant just above timber- 
line. It also grows on Mt. Bigelow. 
Aspidium spinulosum, Swartz, var. dilatatum, Hook. Common in 
rich mountain woods throughout the county. There seems to be a 
rather definite line about 1200 feet, above which it is found. 
Lycopodium annotinum, L., var. pungens, Spring, is very common, 
and seems to shade into the type. It also occurs on the other moun- 
tains of the county. 
CHELMSFORD, MASSACHUSETTS. 
\ 
FOLIAR OUTGROWTHS FROM THE SURFACE OF THE 
- LEAF OF ARISTOLOCHIA SIPHO. 
R. G. LEAVITT. 
Miss Katharine P. Loring has sent to the Gray Herbarium from 
Pride’s Crossing, Massachusetts, a leaf of Aristolochia Sipho upon 
the under surface of which curious lamellar expansions have been 
formed. (Fig. 1). These unusual 
structures are stated by Miss Loring 
to have originated in the healing of 
wounds. She says: “I have watched 
it [the leaf] all summer. In the 
spring, when it was still folded, a fly 
netting dropped on it on the window 
sill, crushing it and splitting the leaf 
in several places. I thoughtit would 
wither; instead it mended itself as 
you see.” 
The places where the young blade 
was split are entirely closed up. The 
Fig. 2 green tissue is broken, its place being 
taken by collenchymatous elements. 
Around the margin of the break, in each case, a vein has been 
organized (v, Fig. 2), from which, on the under surface of the 
leaf, the outgrowths in question arise. There are fifteen of these 
structures on the half leaf sent to me for examination. They vary 
