280 WILSON EXPEDITION TO CHINA 



2 mm. longa, oblonga, obtusa, integra v. obsolete parce denticulata, glabra; petala 

 breviter unguiculata, subspathulato-obovata, 5 mm. longa, 3 mm. lata, alba; 

 stamina 22-24, majora ad 4 mm. longa; pistillum 2-4 mm. longum, subobsoletum 

 (bene evolutum non vidi). Drupa ignota. 



Cultivated in the Spath Arboretum near Berlin, as "Prunus triflora" from 

 Mandshuria. 



This species differs from Pruntis triflora Roxburgh in the conduplicate leaves, 

 scarcely, partly, or only sUghtly involute on the margin, the entirely glandless 

 serratures of the leaves, the very short pedicels, and in the smaller flowers. The 

 fact that in the Plums condupUcate as well as convolute leaves occur is more and 

 more confirmed. 



3. Prunus thibetica Franchet in Nouv. Arch. Mus. Paris, s6r. 2. VIII. 215 {PL 

 David. II. 33) (1885). 



Western Szech'uan: Mupin, thickets, April 1869, David. 



4. Prunus triflora Roxburgh. See p. 276. 



In forma typica pedicelli ut cupula glaberrimi, stamina 23-32 v. raro ad 43, 

 quorum majora ad 5-8 mm. longa. 



Pnmus triflora, var. pubipes Koehne, n. var. 



PedicelU dense pubescentes v. rarius subglabri. Cupula ad tertiam v. dimidiam 

 partem usque pubescens; stamina 19-22, quormn majora ad 3 v. 3.5 mm. longa. 



Cultivated in the Botanic Garden at Dahlem and in Spath's Arboretum near 

 Berhn. 



This variety differs except in its pubescence very Uttle from the typical Prunus 

 triflora, so that I can hardly beUeve in an hybrid origin of the var. pubipes. Transi- 

 tional forms seem to be: P. Masu Hort.^ ex Zabel in Beissner, Schelle & Zabel, 

 Handb. Laubholz-Ben. 252 (nomen nudum) (1903), and P. Botan Hort., the pedicels 

 and calyx of which are glabrous, or here and there sparingly pubescent. 



5. Prunus Simonii CarriSre in Rev. Hort. 1872, 111, t. 

 Introduced from China. Spontaneous specimens are imknown. 



6. Prunus platysepala Koehne. See p. 277. 



Sect. II. ARMENIACA (Miller) W. J. D. Koch, Syn. Fl. Germ. 205 (1837). 



Armeniaca Miller, Gard. Diet., ed. 7 (1764). — A. L. de Jussieu, Gen. 341 

 (1789). 



7. Prunus anomala Koehne, n. sp. 



Rami hornotini subglabri, nigrofusci, in sicco tenuiter longitudinaliter rugoso- 

 striati, annotini glabri, sat graciles; gemmae rotundato-ovatae, 1.5-2.5 mm. longae. 

 Stipulae ignotae; petioU 10-12 mm. longi, glabri, eglandulosi; lamina e basi late 

 cuneata obovato-oblonga v. obovata, suprema late inverse oblonga, 6-7.3 cm. 

 longa, 2.5-3.5 cm. lata, longe caudata, simpUciter v. hinc inde subduplicato- 

 crenata, dentibus obtusis, glandula parva nigrescenti terminatis, supra glabra, 

 Bubtus glabra v. in nervorum axillis barbulata, nervis utrinsecus 4-5, subtus paullo 

 pallidior costa nervisque fuscescentibus, membranacea. Flores solitarii in foliorum 

 adultorum axillis; involucrum vix 2 mih. longum; pedicelh 6-7 mm. longi, glabri; 

 cupula patelliformis, 2.5 mm. longa 5 mm. lata, glabra; sepala rotundata, circiter 

 4 mm. longa lataque, erecto-patentia, tenuiter breviter ciliata ceterum glabra; 

 petala breviter unguiculata, orbicularia, circiter 8 mm. longa, 7.3 mm. lata; stamina 

 54, petalis subaequilonga, ad 7 mm. longa; pistillum 12 mm. longum, ovarium ut 

 etyli basis densissime breviter hirtello-tomentosum, stylus stamina superans. 



1 Masu is an incorrect speUing; it ought to be Maru (= round in Japanese). 



