sia and Natural History. 483 
and — are names “i oo more. Without baling? ase to clear 
them up (and no wonder), Decaisne thinks that they may be dis 
Radeidhos into at least three groups, characterized by the distinct 
or united s styles, and the glabrous or downy ovaries. We are 
continually impressed with the idea that there must be three or 
four American species, and the seeds may aid in their definition, 
But thus far Peraphylium N utt., 
seferred by Bentham and Hooker to Amelanchier, has not 
been studied by Decaisne. When he examines the excellent speci- 
mens in flower and in fruit, which Mr. Siler has supplied from 
Southern Utah, he will conelude that the genus must certainly 
= rig The likeness is only in the peculiar structure of 
e€ t 
As respects the remaining genera, the difference between this 
monograph and the disposition in Bentham and Hooker’s Genera 
Plantarum is mainly this: Hriobotrya, with its baccate fruit (what 
is termed endoc carp reduced to a soft pellicle), large ies seeds 
with a cotyledons, and cedslote pow is upheld as a 
good gen Heteromeles is adopted fro Roemer for the 
idrniar Photinta arbutifolia, and a Se aes not good) 
rea #. a is added. The characters appear to be 
the 10 instead of 2 0 stamens, in pairs opposite the calyx-lobes, 
their filaments dilated at base and somewhat mona delphous, 
Tn the tabular gerd Seiad the petals are said to have “ préfiloraison 
tordue,” but in the generic character it is “ estivatione imbrica- 
tiva vel panicbaes: ” the latter term with the French — 
“tordue” or contorted (or, as we say, conyolute), and so we find 
them in all the flower- buds now examined. But before caves 
the genus it may be well to a the Photinie generally. 
Photinia, of which P. serrulata is the type, is characterized as 
four others successively overlapping in = “contorted” way ; and 
a of Wallich’s specimens of ifolia the first flower- 
Se apected showed the “con orted”’s atc complete. 
is also the case in P. dubia (in one of Hooker’s and Thompson’s 
h hasyia Specimens), and this Decaisne refers to Hriobotrya, pie 
4s imbricative sstivation. Next is Pourthia, a new gen 
of eleven J apanese and Indian species, the type being Photinia 
arguia, v vis, &c., and the character, among others, “ 2s- 
tivatione contorta.” "But we as commonly find one petal wholly 
tr. So we think it evident that the estivation of the co- 
rolla furnishes no characters for the division of she ac eee 
Finally, as 5 Roe proper —— once * an a * 
oemer, for Crat acantha and an alli 
Indo-Chinese species, , and placed om s lomnanles and a character 
