218 WILSON EXPEDITION TO CHINA 



Prunus micromeloides Koehne, n. sp. 



Arbor 3-8-metralis; rami hornotini aestate glabri, vetustiores pal- 

 lide cani v. nigrescentes; gemmae circ. 3 mm. longae, pilosae. Stipulae 

 oblongo-lanceolatae, circ. 6 mm. longae, pirmatifidae ac glanduloso- 

 fimbriatae glandulis cylindraceis, persistentes; petioli 7-12 mm. 

 longi, secus canalicuhim parce villosi; glandulae saepe 0, interdum 

 1-2, laminae basi v. raro petioli apice insertae, plerumque stipitatae; 

 lamina e basi acuta, rotundata v. emarginata ovata, obovata v. ovato- 

 rotundata, 2.5-7 cm. longa, 1.7-4.7 cm. lata, subito breviter acumi- 

 nata, inciso-duplicato-serrata, dentibus latis, acutis v. subacuminatis, 

 glandula punctiformi terminatis, supra sparsim nitide strigulosa v. 

 demum subglabra, subtus primo initio densissime tomentoso-albicans 

 postea in nervis tantum pilis nitidis obsita v. etiam in nervis glabra, 

 nervis utrinsecus 7-12, subtus paullo pallidior et subcana, papyracea. 

 Involucra sub anthesi multa persistentia, circ. 4 mm. longa, erecto- 

 patula; pedunculus circ. 4 mm. longus, pubescens v. glaber; flores 2-3 

 umbellati v. subumbellati, coaetanei foliis simul 3-4 cm. longis; 

 bracteae rotundatae v. late spathulatae, circ. 4 mm. longae, glanduloso- 

 fimbriolatae, herbaceae; pedicelli 5 mm., fructiferi 11-20 mm. longi, 

 pilosiusculi, demum glabri; cupula 5 mm. longa, breviter lateque 

 campanulata, parce pilosa; sepala erecto-patula, rotundata, 1.7 mm. 

 longa, breviter glanduloso-fimbriolata, ceterum glabra; petala obovata, 

 4.5 mm. longa, 2.5 mm. lata, baud emarginata, irregulariter eroso- 

 crenulata; stamina 19, petalis longiora, ad 7 mm. longa; pistillum 

 13 mm. longum, stylus staminibus paullo longior, usque ad duas tertias 

 partes molliter villosus. Drupa globosa, 9 mm. (Wilson) v. 12 mm. 

 (Potanin) diam., videtur rubra; putamen rotundatum, 7:7:5 mm. 

 V. 9:7.7:5.5 mm. costis foveolisque validiusculis v. validis, carina com- 

 planata. 



Western Szech'uan: Wa-shan, thickets, alt. 2300-2500 m., June 

 and September 1908 (No. 824). Also collected in eastern Kansu, 

 Mount Idshu-shan, July 16, 1885, G. N. Potanin. 



Potanin's specimen, which had been determined as P. stipulacea Maximowicz, 

 has the under surface of the leaves more glabrous, the pedicels of the fruits longer 

 and the drupes and stones larger than in Wilson's specimen. 



Prunus oxyodonta Koehne, n. sp. 



Arbor 2. 6-4-me trails; rami juveniles strigulosi, postea glabri, 

 vetustiores cani v. cano-fusci. Stipulae oblongae v. lineares, ad 6 

 mm. longae, glanduloso-fimbriatae glandulis cylindraceis, persistentes; 



