A DECADE or New PoMACEX. 
AMELANCHIER CRENATA. Stems low,clustered and bushy, 
the branches very stout, rigid and divaricate, the bark ash- 
gray: leaves subcoriaceous even at flowering time, nearly 
orbicular, 4 to $ inch in diameter, evenly but rather lightly 
and coarsely crenate all around the margin except the 
basal portion, both faces when young pale with a light to- 
mentum, neither face notably veiny : flowers 3 to 5, in short: 
subcorymbose short-peduncled clusters; the peduncles and 
pedicels as well as the calyx villous or villous-tomentose : 
segments of the calyx-teeth triangular, about equalling the 
tube: petals narrowly obovate-spatulate, creamy-white, but 
red externally before expansion: filaments very short, 
slightly subulate-dilated. 
On rocky declivities near Aztec, New Mexico, 23 April, 
1899, C. F. Baker; the species altogether peculiar in the 
crenate character of its leaf-indentation. 
AMELANCHIER POLYCARPA. Small branching tree, the 
branches not stout, though numerous and short, with red 
bark and no trace of pubescence: leaves small, the largest 
barely an inch long, round-obovate, deep-green above, paler 
beneath, remarkably veiny on both sides and wholly gla- 
brous, deeply and rather sharply serrate from below the 
middle, the base entire, often subcordate; petioles rather 
slender but mostly shorter than the blade: flowering twigs 
very short but numerous, the racemes few-flowered : calyx, 
and even the summit of the ovary within it, perfectly 
glabrous: fruit depressed-globose, crowned by a short calyx- 
limb and its triangular-lanceolate segments. 
Collected at Piedra, southern Colorado, 10 July, 1899, by 
C. F. Baker, who records that it grows on low level lands 
Prrronta, Vol. IV. Pages 127-158. 2 March, 1900. 
