200 WILSON EXPEDITION TO CHINA 



telli, 16-20 mm. longi. Drupa globosa, 9 mm. longa 9.5 mm. diam,, 

 fusco-rubra; putamen subrotundatum, 5.4:4.6:4 mm., juxta carinam 

 planam et juxta suturam costulis brevibus horizontalibus v. subre- 

 curvis munitum. 



Western Szech'uan: Sungpan Ting, woods, alt. 3000 m., August 

 1910 (No. 4016). 



This species resembles in its pubescence P. pulchella Koehne, but P. pulchella 

 has longer racemes and the glands of the teeth of the leaf are very small. Prunus 

 pleiocerasus Koehne and P. conadenia Koehne differ in being glabrous and in their 

 longer racemes with more flowers. In its short racemes P. macradenia Koehne, 

 somewhat approaches P. tatsienensis BataUn, which differs, however, in the 2(-4)- 

 fiowered umbels and in being glabrous. 



Prunus discadenia Koehne, n. sp. 



Frutex 4-6-metralisv.arbor 10-13-metralis; truncus 20-40 cm. diam.; 

 rami hornotini glaberrimi, initio saepe saturate rubri, autumno fusci, 

 vetustiores cinerei v. saturate f usco-cinerei ; gemmae 3 mm. longae, gla- 

 brae. Stipulae oblongae v. lanceolatae, circiter 3-4 mm. longae, serratae 

 ac glanduloso-fimbriolatae, herbaceae, persistentes; petioli 7-18 mm. 

 longi, glabri, interdum saturate rubri, glandulis plerumque 2 petioli apici 

 V. laminae basi insertis, validis; lamina e basi cordata v. rotundata 

 V. rarius subacuta ovata, obovata v. interdum oblongo-obovata, 4-10 

 cm. longa, 2.5-5 cm. lata, acuminata v. caudata, inaequaliter serrata, 

 dentibus glandula valida depresso-disciformi terminatis, glaberrima 

 V. raro subtus in costa nervisque pilis conspersa, nervis utrinsecus cir- 

 citer 8-10, pallidis, supra laete viridis, subtus vix pallidior, demum 

 subcartilaginea. Involucri squamae 1-4 interiores sub anthesi in- 

 terdum persistentes, saepe circiter 10-18 mm. longae; pedunculi 

 1-2 cm. longi, glabri; racemi absque pedunculo 3-6 cm. longi, axis 

 glaber; fiores 3-9, coaetanei, foliis simul ad 5-7 cm. longis; bracteae 

 4-9, infima saepe sterili, rotundatae ad ovato-oblongae, 8-10 mm. 

 V. infimae ad 25 mm. longae, serratae dentibus glandula maxima de- 

 presso-disciformi terminatis; pedicelli 8-23 mm. longi, glabri; cupula 

 4-5.5 mm. longa lataque v. vix longior quam lata, glabra; sepala 

 refiexa, triangularia acuta, cupulam aequantia v. sublongiora, brevis- 

 sime glanduloso-fimbriolata, ceterum glabra; petala rotundata, 6-8 

 mm. longa lataque, eroso-denticulata, alba; stamina 40-47, petalis 

 aequilonga v. sublongiora, majora 7-11 mm. longa; pistillum 11 mm. 

 longum, stylus stamina aequans v. subbrevior, usque ad medium 

 parce villosus. Drupa subglobosa, circiter 9 mm. longa, 7 mm. diam., 



