DIAPENSIACEAE. 301 
PYXIDANTHERA. Pyxie. 
(Family Diapensiaceae). 
Matted and trailing half-shrub 
of sandy pine barrens: evergreen. 
Stems slender, long covered by 
the persistent leaf-remnants. 
Buds minute, naked, concealed by 
es the petioles. Leaf-scars absent: 
fp stipules or stipule-scars lacking. 
Br 
LZ 
Leaves alternate or subopposite, 
oblanceolate, rather crowded, 
spreading or ascending. 
The pyxie is counted among the 
most attractive plants of the New 
Jersey pine barrens, particularly 
as it flowers very early in the 
Spring. A special interest at- 
taches to this region because in 
it, when Darwinian biology was 
new, Mrs. Mary Treat made many 
observations on the localized 
plants with which she was _ sur- 
rounded, and demonstrated the 
value and pleasure of a truly amateur interest in natural 
history in a series of contributions to The American Natural- 
ist, the earlier volumes of which possess a readability which 
is rare in journals devoted to Science. 
Somewhat transiently white-hairy: leaves acute. P. barbulata. 
Winter-characters of Ceratostigma plumbaginoides, of the 
family Plumbaginaceae, much grown over walls, etc., in warm 
regions, are given by Schneider, f. 109. 
