202 WILSON EXPEDITION TO CHINA 



glandulis plerumque laminae basi, raro petioli apici insertis; lamina 

 e basi emarginata v. rotundata v. rarius subacuta obovata, intermixtis 

 rotundatis v. ovatis v. inverse oblongis, 2-9 cm. longa, 1.5-4. cm. lata, 

 subito acuminata, simpliciter ac duplicato-serrata, dentibus cuspidatis, 

 glandula minutissima terminatis, supra in costa tenere pilosa ceterum 

 glabra v. parce strigulosa, subtus in nervorum axillis plus minus 

 barbata ceterum glabra, nervis utrinsecus circiter 7-10, laete viridis, 

 subtus subconcolor, demum papyracea v. membranacea. Involu- 

 cra sub anthesi omnia v. pleraque decidua; pedunculus 4-22 mm. 

 longus, pilosus; flores (l-)2-3(-4) umbellati v. subumbellati, floribus 

 1-2 infimis subremotis, coaetanei foliis simul 2-5 cm. longis; bracteae 

 2-5, rotundatae ad oblongae, infima saepissime sterilis ac major, 5-16 

 mm. longa, sequentes 3-8(-12) mm. longae, glanduloso-serratae, 

 glandulis parvis capitatis v. conicis, herbaceae, persistentes; pedicelli 

 10-27 mm., fructiferi interdum ad 48 mm. longi, glabri v. superne v. 

 toti parce villosi; cupula 3.5-4 mm. longa, breviter lateque campanu- 

 lata, glabra; sepala reflexa, triangularia obtusa v. acuta, 2.5-3.5 mm. 

 longa, Integra v. vix denticulata, glabra v. apice breviter tenere ciliata; 

 petala ovata v. rotundata, 7.5-9 mm. longa, 5-8 mm. lata, integra 

 V. apice leviter crenulata, alba v. rosea; stamina 24-25, petalis sub- 

 aequilonga, majora 7-9 mm. longa; pistillum 12-14 mm. longum; 

 stylus usque ad medium villosus, staminibus sublongior. Drupa 

 ovalis V. ovali-rotundata, circiter 11-12 mm. longa, 7-10 mm. lata, 

 rubra; putamen late obovatum v. rotundato-ovale, 9:7.5:6 mm., 

 laevissimum. 



Western Hupeh: Chang-lo Hsien, thickets, alt. 1300-1600 m.. 

 May and June 1907 (No. 64) : Hsing-shan Hsien, woods, not common, 

 alt. 1300-1600 m.. May 7, 1907 (No. 2830); Hsing-shan Hsien, alt. 

 1000-1300 m.. May 7, 1907 (No. 2828). 



Prunus variabilis can hardly be distinguished without fruits from P. pilosiuscula 

 Koehne, which is characterized by remarkably narrow and distinctly furrowed 

 Btones. It is equally difficult to distinguish from P. Rehderiana Koehne, P. venusta 

 Koehne and P. litigiosa Schneider, the stones of which are still unknown. 



Prunus pilosiuscula Koehne, n. sp. 



Prunus tatsienensiSy var. pilosiuscula Schneider in Fedde, Rep. Nov. Sp. I. 

 66 (1905). 



Frutex 5-metralis v. arbor 5-13-metralis; truncus 20-40 cm. diam.; 

 rami hornotini glabri v. hinc parce v. densius rigidulo-pilosi v. prae- 

 terea basi undique brevissime hirtelli, annotini glabri, vetustiores 



