ROSACEAE. — PRUNUS 211 
Prunus Twymaniana Koehne, n. sp. 
Arbor 3-6-metralis; rami annotini glabri, cano-fuscescentes, ve- 
tustiores nigrescentes. Folia sub anthesi tantum nota; petioli ad 
4 mm. longi, glabri; glandulae 2 petioli apice v. laminae basi insertae; 
lamina (videtur ovata) ad 2.5 cm. longa, haud v. leviter acuminata, 
crenato-serrata, dentibus obtusis v. brevissime cuspidatis, glandula 
valida breviter conica terminatis, supra glabra, subtus juxta costae 
partem basalem tantum tenere villosa, purpurascens, nervis utrin- 
Secus circiter 10-11. Involucra erecta, 0.7-1.3 em. longa; pedun- 
culus brevissimus; flores 1-2 umbellati, subpraecoces; bracteae 
oblongae, circiter 3-4 mm. longae, glandulis marginatae; pedicelli 
9-12 mm. longi, glabri; cupula 7 mm. longa, e basi acuta tubulosa, 
glabra, purpurascens; sepala erecto-patula, oblonga acutiuscula, 
45 mm. longa, frequenter glanduloso-fimbriolata, glabra; petala 
ovata, 6 mm. longa, 4 mm. lata, apice rotundata, eroso-crenulata, 
alba; stamina 25, petalis fere duplo breviora, ad 3.5 mm. longa; pis- 
tillum 12 mm. longum, stylus staminibus 2-3 mm. longior, inferne 
parce villosus. Drupa ignota. 
Western Szech'uan: west and near Wén-ch’uan Hsien, alt. 
2000-2600 m., March 1908 (No. 810, as to flowering branches; the 
fruiting branches belong to P. lobulata Koehne, which has no glands 
on the serratures of the leaves). 
At the request of Mr. Wilson I have named this species in compliment to Bertie 
: » Esq., of the British Consular service in China, who was of very con- 
Siderable assistance to Mr. Wilson during 1908. Further investigation is needed 
to determine whether P. ampla Koehne, which is known only in fruiting speci- 
mens and has equally large glands on the teeth, belongs here. 
Prunus Conradinae Koehne, n. sp. 
Arbor 3-12-metralis, truneus 20-50 cm. diam.; ramuli novelli 
glabri, vetustiores cano-fuscescentes v. cinerei v. intense fusci; gem- 
mae 3-6 mm. longae, glabrae. Stipulae angustissime lineares, 4-7 
mm. longae, saepe basi pinnatifidae, longe glanduloso-fimbriatae, 
Post anthesin deciduae; petioli 10-17 mm. longi, glabri, glandulas 2 
crassas apice v. paullo inferius gerentes; lamina e basi rotundata v. 
hine inde acuta v. subcordata obovata, obovato-oblonga, rarius fere 
Totundato-ovata, 5.5-10.5(-15) em. longa, 2.5-5.5-(6.8) cm. lata, 
Subito anguste acuminata, sat profunde, medio duplicato-serrata, . 
dentibus vix v. tenuiter acuminatis, glandula punctiformi terminatis, 
Saepe initio glabra v. pilis brevibus conspersa, demum semper fere 
glabra, subtus in costa nervisque pilis conspersa, demum glabrescentia 
