ON SOME MOUNTAIN PLANTS FBOM NOHTHERN CHINA. 137 



Corylus rostrata. Ait. y mandshnrica, Rgl. " Tr^s commun.'* I 

 suspect this is specifically distinct from the JS'orth American shrub. 



Ostryopsis Davidiana, Dene. 



Alni, sp. A small branch with well-developed leaves, but 

 neither inflorescence nor fruit. It is quite different from any species 

 known to me. The leaves, 2^ inches long, with petioles 3-4 lines in 

 length only, are broadly rotundato-obovate from a cuneate con- 

 spicuously unequal base, doubly serrato- dentate, and with a short 

 caudate acumen from the rounded obtuse apex ; above they are 

 scabrous with minute white hairs, opaque, and with impressed costa 

 and primary veins ; beneath pale, with a minute pubescence, and 

 bearded in the axils of the costiform primary veins, which are 1 1 or 

 12 on each side of the midrib, from which they diverge at an angle 

 of 40° or 50°, and are like it, prominent ; they are sometimes forked, 

 or with two branches near their extremities ; the secondary veins are 

 quite inconspicuous. No species in my herbarium has leaves like 

 this, nor are any at all approaching it figured in the trustworthy out- 

 line which Dr. Eegel has given in his " Monographia Betulacearum." 

 I do not in the least doubt that we have here a very well-marked 

 new species, whose nearest ally is most likely A. incana, Willd. 



BetulcBSTp^. 3. "Les Chinois m'ont dit qu'ilya sur le Po-hua-shan 

 trois especes de Bouleaux, et ils m'ont demontre la difference. Comme 

 les feuilles que je vous envoie sont jeunes, il est difficile de les dis- 

 tinguer. Mais les Ciiinois m'ont montre qu'il y a une difference 

 quant a I'ecorce et le bois. 1 . Tchi-ni-hua (hua est le terme gene'ral 

 pour bouleau). Ecorce grisatre, se detachant facilement, de sorte 

 que I'arbre a toujours un aspect deguenille. 2. Pai-hua (Bouleau 

 blanc). L' ecorce est tres blanche, tres e'paisse, et ne se detache pas. 

 On I'emploie pour faire I'encre chinoise. Fen-hua. L'ecorce est 

 blanche aussi (plutot blanche jaunatre), mais elle est mince." Of 

 these three Birches, !N"o. 3 had very young leaves and male 

 aments, and I feel tolerably sure the specimens are referable to B. 

 davurica, Pall. Of Nos. 1 and 2 there are merely branchlets bursting 

 into leaf, and they are of course indeterminable. I thought, from 

 comparison, the first might be B. alba, Linn., the second perhaps B. 

 Ermani, Cham., but this is little better than a guess, the materials 

 for an opinion being so imperfect. 



Salix {BiandrcB, podostylce, virescentes) phylicifolia, Linn. Female 

 specimens, in fruit and with young leaves. The previous detection 

 of this species in North-Eastern Asia seems uncertain, for the plant 

 gathered in Dahuria, and referred hither by Ledebour, is pronounced 

 by Andersson to be a form of S. arctica, Pall. ; and another, gathered 

 by Dr. von Stubendorffin Eastern Siberia, is also doubtful. The present 

 specimens, however, agree so well with some of the same sex given 

 me some years since by the late Dr. Klotzsch, and gathered in the 

 Berlin Garden Salicetum, from a tree determined by Prof. Andersson 

 himself, that I cannot hesitate about the determination. Andersson's 



a solitary distinction, without even accessory characters of importance ; M. De 

 CandoUe allows no Quercus to have more than 4-5 styles. To me there seems no 

 choice but either to admit Oerated'i genera, or else to eflFect the fusion proposed 

 "by rnvself. 



