ROSACEAE. — PRUNUS 243 
Yunnan: “Environs de Yunnan-sen, dans une ravine de la montagne," Feb. 
16, 1897, Duclouz (No. 77). 
34. Prunus ampla Koehne, 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. longas 
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, hine irregu- 
lariter hine 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 Rosthorn (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. Prunus malifolia Koehne. See p. 207. 
Prunus malifolia, var. Rosthornii Koehne, n. var. 
Petioli 10-12 mm. longi, glandulis 1-2 latis petioli 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. biflora 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 em. longa, 2.4-3.7 em. 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. 4 
75 dai China: Mount Omei, May 1904, E. H. Wilson (Veitch Exped. No. 
37. Prunus Dielsiana Schneider in Fedde, Rep. Nov. Sp. I. 68 (1905). A 
“P. szechuanica, var.?" seu “P. szechuanica, var. Dielsiana Schneider, 1:6; 
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, 
Totundatae, glabrae. Stipulae lineari-filiformes, 8-15 mm. longae, basi pinnatifidae 
niis 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- 
Data angustius latiusve inverse oblonga, 8-14 cm. longa, 4-5.5 em. lata, subito 
anguste acuminata, simpliciter ac duplicato-serrata, dentibus majusculis, breviter 
argute acuminatis, glandula validiuscula disciformi terminatis, supra glabra, 
Subtus in costa nervis venisque dense ceterum laxe molliter villosa, nervis utrin- 
Secus circiter 10-12, demum subtus ochraceis, subtus vix pallidior quam supra, 
