ROSACE AE. — PRUNUS 63 



10-12, antheris tantum petala superantia; ovarium pilosiusculum; 

 stylus cupulam vel petala aequans, glaber. Fructus ignotus. 



Western Szech'uan: Ya-chu Fu, woodlands, alt. 1200 m., Oc- 

 tober 1908 (No. 2847). 



From this species Prunus phaeosticta Maximowicz differs in the leaves being 

 copiously and minutely punctulate beneath and from P. spinulosa Siebold & Zuc- 

 carini in its narrower leaves broadest above or at the middle with nearly spinu- 

 lose teeth curved forward, in the branchlets and racemes slightly pilose and in 

 the stamens exceeding 20 in number; P. macrophylla Siebold & Zuccarini, P. 

 acuminata Roemer and P. Jenkinsii Hooker f . differ in other characters as well aa 

 in the shape of their much larger leaves. 



Prunus Wilsonii (Diels ms.) Koehne, n. comb. 



Padus Wilsonii C. K. Schneider in Fedde, Rep. Sp. Nov. I. 69 (1905); III. 



Handh. Laulholzk. I. 637 (quoad ramos floriferos; excludendis ramis fruc- 



tiferis qui ad P. sericeam Koehne pertinent) (1906). 



The type as described by C. K. Schneider differs in the axis of the racemes, 



the pedicels, the cupula and the sepals inside and outside being short-hirtellous 



and becoming glabrous. Besides, the petioles are described as without glands, the 



leaves as rather remotely serrulate, whitish beneath and the stamens as nearly 



twice as long as the petals. I have, however, after a comparison with Schneider's 



specimen, no doubt that the following variety belongs here. 



Prunus Wilsonii, var. leiobotrys Koehne, n. var. 



Arbor 10-metralis trunco 0.45 m. diam. Racemorum axis pedicelli- 

 que glabri; cupula extus glabra, sed sepala ut in typo utrinque hirtella 

 ac ciliata. Glandulae 1-4 rarius petioli apici, saepius laminae ima 

 basi insidentes; lamina densiuscule serrulata, subtus subcana. Stamina 

 petalis dimidio longiora (stamina 6 mm., petala 4 mm.). Ceterum 

 cf. supra clavem specierum. 



Western Hupeh: Hsing-shan Hsien, ravines, rare, alt. 900 m., 

 May 7, 1907 (No. 2835); South Wushan, woods, alt. 1200 m., June 

 (not seen) and September 1907 (No. 222); north and south of Ichang, 

 woods, alt. 600-1200 m., September 1907 (No. 127, as to fruiting 

 branches; the flowering branches belong to P. sericea, var. brevifolia). 



To this variety seems to belong: Padus napaulensis (Ser.) C. K. Schneider 

 forma? in Fedde, Rep. Nov. Sp. I. 68 (1905), collected in Yunnan by A. Henry 

 (No. 10547). This form differs from P. Wilsonii, var. leiobotrys only in the fewer 

 and shorter hairs on the under side of the leaves, and might be considered as in- 

 termediate between P. napaulensis and P. Wilsonii (not between P. napaulensis 

 and P. sericea as Schneider suggests), but in numerous specimens of P. napaulensis 

 the leaves are always glabrous beneath. 



Prunus sericea Koehne, n. sp. 



Prunus napaulensis, var. sericea Batalin in Act. Hort. Petrop. XIV. 169 (1895). 

 Padus napaulensis, var. sericea C. K. Schneider, III. Handh. Laubholzk. I. 

 639 (1906). 



