ROSACEAE. — PRUNUS 69 
Prunus bicolor Koehne, n. sp. 
Ramuli novelli nigricantes, densissime puberulo-velutini, vetusti- 
ores vix glabrati lenticellis pallidis; gemmae 3.5-8 mm. longae, pallide 
fuscae, glabrae. Petioli 15-25 mm. longi, superiore pagina pulveru- 
lento-puberuli, eglandulosi; lamina e basi rotundata v. subcordata 
obovato-oblonga (5.3-9.8 em. longa 2.5-4.5 em. lata), leviter breviter 
acuminata apice obtusiuscula valide mucronata, minutim serrata 
dentibus angustissimis porrectis v. subincurvis, supra in costa pul- 
verulenta ceterum glabra, subtus glaberrima, supra intense viridis 
reticulo subimpresso, subtus manifeste albicans, costa nervisque ochra- 
ceis reticulo nigrescente maxime manifesto, sub microscopio circa 
stomata subpapillosa papillis scabridis. . Racemi erecto-patentes, 
absque pedunculo foliato 13 em. longi, pulverulento-velutini; pedicelli 
2-4.5 mm. longi. Flores ignoti. Cupulae basis sub fructu persistens, 
intus glaberrima. Fructus ut videtur 5-6 mm. diam.; putamen 4.3 
mm. longum, 4 mm. diam., carinatum, obsoletissime rugosum. 
Western Szech’uan: Tachien-lu, woods, alt. 1800 m., Septem- 
ber 1908 (No. 977, as to fruiting branches; the flowering branches 
belong to P. obtusata.). 
Prunus velutina Batalin in Act. Hort. Petrop. XIV. 186 (1895.) 
Padus velutina C. K. Schneider in Fedde, Rep. Nov. Sp. I. 69 (1905); IU. 
Handb. Laubholzk. I. 638 (1906). 
Western Hupeh: north and south of Ichang, woodland, alt. 900- 
1800 m., May and September 1907 (No. 2840); without locality, 1901 
(Veitch Exped. No. 1789); A. Henry (No. 5774). Northern Shensi: 
G. Giraldi (No. 4931). 
Prunus Grayana Maximowicz in Bull. Acad. Sci. St. Pétersbourg, 
XXIX. 107 (1884); in Mél. Biol. XI. 704 (1883). 
Prunus Padus, var. japonica Miquel in Ann. Mus. Lugd.-Bat. II. 92 (1865) 
Padus Grayana C. K. Schneider, IU. Handb. Laubholzk. I. 640 (1906). 
Padus acrophylla C. K. Schneider in Fedde, Rep. Nov. Sp. I. 70 (1905); Ill. 
Handt. Laubholzk. Y. 640 (1906.) (Forsan ex descriptione huc etiam ducenda, 
quamvis cupulae basis sub fructu persistens ab autore dicatur pilosa.) 
Petioli 5-13 mm. longi, eglandulosi; glandulae 1-3 marginales la- 
minae dentibus infimis subtus insidentes, complanatae; folia e basi 
rotundata v. vix subcordata late oblonga v. obovato-oblonga v. ovata, 
caudato-acuminata, argutissime serrata dentibus tenuissime acumil- 
natis, subtus epapillosa. Pedicelli 2-13 mm. longi; cupula intus 
glaberrima; sepala integra, interdum margine parce glandulifera, ten- 
