ROSACEAE. — PRUNUS 243 



Yunnan: "Environs de Yunnan-sen, dans une ravine de la montagne," Feb. 

 16, 1897, Ducloux (No. 77). 



34. Prunus ampla Koeline, n. sp. 



Rami hornotini crassi (fere 3 mm. diam.), cano-fuscescentes, glabri, vetustiores 

 ignoti; gemmae 4 mm. longae, ovatae, acutae, glabrae. Stipulae caducae; petioli 

 8-10 mm. longi, 2 mm. lati, glabri, glandulas 2 crassas, ovales, ad 2 mm. longaa 

 2 mm. latas excavatas infra apicem gerentes; lamina e basi late rotundata late 

 obovata, 12-13.5 longa, 6.5-8.4 cm. lata, subito breviter acuminata, liinc irregu- 

 lariter hinc duplicato-serrata, dentibus latis, cuspidatis, glandula valida breviter 

 conica terminatis, utrinque glabra, nervis utrinsecus circiter 10, supra ut videtur 

 saturate viridis, subtus pallide viridis, membranacea. Cetera ignota. 



Szech'uan: Nan-ch'uan, summer 1891, A. von Roslhorn (No. 158). 



The leaves are so characteristic and so different from those of all other cherries 

 that it seemed advisable not to leave this species undescribed, though neither the 

 flowers nor the fruits are known. It is not impossible, however, that it belongs to 

 P. scopulorum Koehne, known only in the flowering state. It should be compared 

 also with P. Twymaniana Koehne of the sect. Pseudocerasus, which has equally large 

 glands on the serratures and is known only in the flowering state. 



35. Primus malifolia Koehne. See p. 207. 



Pninus malifolia, var. Rosthomii Koehne, n. var. 



Petioli 10-12 mm. longi, glandulis 1-2 latis petioU apici v. laminae basi insidenti- 

 bus; lamina 8-10.8 cm. longa, 4-6.2 cm. lata, supra saturatius viridis. Cetera ut 

 in typo, sed drupae ignotae. 



Szech'uan: Nan-ch'uan, summer 1891, A. von Rosthorn (No. 2420). 



This is possibly a distinct species. 



Ser. 2. Cyclaminium Koehne, n. ser. 



36. Prunus cyclamina Koehne. See p. 207. 

 Prunus cyclamina, var. bifiora Koehne, n. var. 



Arbor 13-metralis; rami vetustiores nigrescentes. Stipulae 9-15 mm. longae, 

 petioli 8-14 mm.: lamina late elliptica v. inverse oblonga, angustior quam in typo, 

 6.5-9.5 cm. longa, 2.4-3.7 cm. lata, glaberrima, nervis utrinsecus circiter 8-10. 

 Pedunculus 8-13 mm. longus; flores bini; pedicelli 16 mm. longi, cupula 3 mm., 

 sepala 5 mm. ; stamina 30, ad 9 mm. longa. 



Western China: Mount Omei, May 1904, E. H. Wilson (Veitch Exped. No. 

 4859). 



37. Prunus Dielsiana Schneider in Fedde, Rep. Nov. Sp. I. 68 (1905). 



"P. szechuanica, var.?" seu "P. szeclmanica, var. Dielsiana Schneider," 1. c, 

 non P. szechuanica Batalin. 

 Frutex arborescens 5-6-metralis v. arbor 6-10-metralis, truncus 20-40 cm. diam.; 

 ramuli novelli glabri, vetustiores cinerei v. subfuscescentes; gemmae 2 mm. longae, 

 rotundatae, glabrae. Stipulae lineari-filiformes, 8-15 mm. longae, basi pinnatifidae 

 laciniis 1-3 angustis, 2-6 mm. longis, longe glanduloso-fimbriatae glandulis crassis; 

 petioli 8-17 mm. longi, longe villosi v. demum subglabri, glandulis 1-3 validis 

 infra v. supra medium v. apice muniti; lamina e basi acuta v. rotundata v. emargin- 

 nata angustius latiusve inverse oblonga, 8-14 cm. longa, 4-5.5 cm. lata, subito 

 anguste acuminata, simpliciter ac duplicato-serrata, dentibus majuscuhs, breviter 

 argute acuminatis, glandula validiuscula disciformi terminatis, supra glabra, 

 subtus in costa nervis venisque dense ceterum laxe moUiter villosa, nervis utrin- 

 secus circiter 10-12, demuna subtus ochraceis, subtus vix pallidior quam supra, 



