128 : PITTONIA. 
andibears a great abundance of fruit, as the specimens well 
show. Intheapparently total lack of pubescence the species 
recalls A glabra of the subalpine Sierra Nevada, though the 
two are not very intimately allied. 
AMELANCHIER RUBESCENS. Arborescent and 10 or 15 feet 
high, or bushy and only 4 to 6 feet; rather intricately 
branched and the branches very stout, short and divaricate, 
the bark after the first season of a dark ashy gray: leaves 
small, seldom an inch long, ovate, acute, serrate-toothed 
almost throughout, only the rounded base entire, canes- 
cently tomentulose on both faces, the short petiole and also 
the growing branchlets and inflorescence more densely and 
villously pubescent: racemes few-flowered and subcorym- 
bose: calyx with lanceolate erect teeth rather longer than 
the tube, the whole exterior as well as the inner face of the 
lobes hoary-tomentulose: petals small, about 4 inch long, 
reddish externally in the bud, as is also the calyx. 
In arroyos and among the hills about Aztec, New Mexico, 
24 April, 1899, C. F. Baker. IfI mistake not I have seen 
the same from somewhere in northern Arizona. The species 
is remarkable for its small leaves and their prevailingly 
ovate outline. The fruit is not known. 
AMELANCHIER BAKERI. Shrubor small tree, the stems 
tufted, and with short stout rigid divaricate branches of the 
last, but the more reddish bark puberulent even to the 
second and third years’ growth: leaves very short-petioled, 
orbicular, 8 to 10 lines long and of the same breadth, sub- 
cordate and entire at base, above the middle and across the 
broadly rounded or almost truncate apex coarsely and 
evenly serrate, both faces sparsely tomentulose; stipules 
villous, and growing twigs both somewhat villous as well as 
tomentose: racemes subsessile, short and dense, small- 
flowered: calyx villous-tomentose, the triangular-lanceolate 
segments as long as the tube and closely reflexed : petals 
white, about 3 or 4 lines long: fruit not seen. 
