ROSACEAE. — PRUNUS 71 
Western Hupeh: Hsing-shan Hsien, woods, alt. 1700 m., May 
1907 (No. 62, as to flowering branches; the fruiting branches belong to 
P. discadenia Koehne, a new species of the section Phyllomahaleb.). 
DISPOSITIO PRUNI SUBGEN. PADI ET CLAVIS 
SPECIERUM CHINENSIUM. 
Calyx fructifer totus persistens; bracteae caducae; stylus brevis. 
Sect. I. CALYCOPADUS. 
* Pedunculi racemorum foliati (intermixtis interdum nonnullis nudis); folia 
decidua v. sempervirentia. (Species omnes Americanae.) 
Subsect. 1. CAPOLLINIA. 
** Pedunculi semper nudi; folia decidua. . . . .. Subsect. 2. CALYCINIA. 
t Ramuli racemorumque pedunculi basi haud involucrati. 
Folia subtus glabra v. haud ubique pilosa. í 
Venarum reticulum supra nunquam, subtus nonnisi post anthesin 
prominulum. Folia supra medium latiora, incumbenti-serrulata. 
P. Buergeriana. 
Venarum reticulum jam durante anthesi utraque pagina manifeste pro- 
minulum; folia subtus in nervorum axillis multis barbulata ceterum 
glabra, majora latiora (6-11 cm.: 2.5-4.5 cm.) quam in P. stellipila, 
brevius serrata dentibus latioribus . . . . . . . . .- P. venosa. 
Folia subtus ubique, versus costam densius, pilis fasciculatis conspersa, 
minora angustiora (4.5-10 cm.:2-3.5 cm.) quam in P. venosa, longius 
serrata dentibus angustioribus . . . . e . e s esso P. stellipila. 
Tf Ramuli ac pedunculi basi usque ad autumnum squamis involucrati,. 
involucro 7-20 mm. lohgs | - sea Sonne. y P i 
Calyx fructifer (ima basi excepta) deciduus . . . . . Sect. 2. GYMNOPADUS. 
* Sempervirentes. Pedunculi nudi; bracteae caducae; stylus brevis. 
Subsect. 3. LAUROCERASUS. 
Petioli eglandulosi. Folia plerumque ovato-oblonga, caudato-acuminata, 
6-9 om. longa. Hacemi MADO . . . .. 5. P. microbotrys. 
Petioli glandulosi. Folia oblonga, acuminata, 10-18 cm. longa. Racemi 
pubeweant- | E 7... 2 iae c 9 11 e P. macrophylla * 
** Folia decidua. 
T Pedunculi foliati (intermixtis interdum nonnullis nudis); bracteae ca- 
ducae. Subsect. 4. EUPADUS. 
$7 eee Veet ce wit C AC LS. ord eur ta ae a A d 
Pagina inferior inter pilos nunquam rufos mox vel ab initio optime 
conspicua. vs 
Pili transversi paralleli breves adpressi submicantes. . P. Wilsonii. 
Pili mox subhirti perturbati (initio tantum tomentum sericeum 
candidum densissimum sistentes) . . . +» > P. sericea. 
us Oranu macrophylla Siebold & Zuccarini in Abhand. Akad. Munch. IV. pt. ii. 
am. Nat. Fl. Jap. 14) (1843). 
a aso uh x C. K. Schneider, IU. Handb. Laubholzk. I. 647, fig. 
1. (1906). 
So far only reported from eastern China (prov. Kwangtung). 
