72 WILSON EXPEDITION TO CHINA 
Pagina inferior usque ad mensem octobrem pilis perfecte abscondita, 
pilis tomentum sericeum intense rufo-ferrugineum submicantem sis- 
SINUS uo... 524. ae ee eS P. rufomicans, 
11 Pedicelli fructiferi nec incrassati nec lenticellati. 
BiytuR Dro . oo SS a a Ser. 2. LEPTOPODIUM. 
Putamen manifeste rugosum. Petala 6-8 mm. longa staminibus 
duplo DOO V o 00. ee ei P. Padus} 
Putamen laeve v. obsolete rugosum. Petala 3-4.5, raro ad 5 mm. longa, 
staminibus aequilonga v. breviora, rarissime manifeste longiora. 
Folia in acumen argutum plerumque longum producta. 
Putamen 7 mm. longum. Folia basi nonnulla rotundata, plera- 
que vero profunde cordata, argutissime serrata dentibus angustis 
longis tenuissime acuminatis, subtus nunquam papillosa; petioli 
15-42 mm. longi, valide 2- (v. 1-6)-glandulosi. Racemi 10-17 
cm. longi, glabri; pedicelli 4-13 mm. longi; petala 4.5 mm. longa, 
giuninibusaéquilohga- . 1 1-743. .x P. ssiori? 
Putamen 4-5.5 mm. longum. Folia basi rotundata v. haud raro 
manifeste cordata, argute v. minutim serrata dentibus semper 
minoribus quam in P. ssiori, subtus nunc papillosa nune epapil- 
losa; petioli 11-24 mm. longi, plerique glandulis 1-2 debilibus 
muniti. Racemi 12-23 cm. longi, nune glabri nunc puberuli; 
pedicelli 2-6 mm. longi; petala 2-4.5 mm. longa, staminibus 
aequilonga v. vixbreviora . .. ...... P. brachypoda. 
Folia leviter breviter v. haud acuminata, obtusiuseula mucronata 
v. obtusa v. subemarginata, semper brevissime v. minutim ser- 
rulata. Putamen 4-6 mm., raro 7 mm. longum. 
Folia subtus glaberrima v. nonnisi in nervorum axillis barbata; 
petala staminibus aequilonga v. longiora. : 
Calyx intus pilosus, quare etiam calycis basis sub fructu persis- 
tens intus hirta. Petioli glandulosi. 
Folia obtusa v. subemarginata, subtus glaberrima ac vix pal- 
lidiora quam supra, venarum reticulo tenerrimo haud 
prominulo intensius colorato . . . . . . .- P. obtusata. 
Folia plerumque leviter breviter acuminata apice obtusi- 
useula mueronata, subtus glaberrima v. in axillis paullulum 
! Prunus Padus Linnaeus, Spec. 473 (1753). 
Prunus racemosa Lamarck, Fl. Franc. III. 107 (1778). 
Padus vulgaris Borkhausen, Forstbot. II. 1426 (1803). 
Cerasus Padus De Candolle, Fl. Franc. IV. 580 (1805). 
Padus racemosa C. K. Schneider, Ill. Hand. Laubholzk. Y. 639, fig. 351 a-b, 
352 a (1906). 
So far only reported from northern China, Mongolia, Shensi, and Chili. 
* Prunus ssiori F. Schmidt in Mém. Acad. Sci. St. Pétersbourg, sér. 7, XII. No. 
II. 124 (Reis. Amurland) (1868). 
Padus ssiori C. K. Schneider, Ill. Handb. Laubholzk. I. 647 (1906). 
Of this species I have seen specimens from Saghalin and Japan, and it is also 
reported from southern Mandshuria, but has not yet been collected in other parts 
of the Chinese Empire. C. K. Schneider has referred several specimens of P. Gray- 
ana in the Berlin herbarium to P. ssiori, but these two species, though similar in 
the serration of the leaves, are otherwise very different and can always be easily 
distinguished with certainty. It is less easy to distinguish P. ssiori from P. brachy- 
poda, var. pseudossiori. 
