KEHDER. — CHINESE SPECIES OF PYRUS. 231 



generally referred to Chaenomeles, it must be considered nomen- 

 clatorially a valid name and the combination cannot be used again for 

 another species. 



4. Pyrus Bretschneideri Rehder, sp. n. 



Arbor mediocris; ramuli hornotini sparsissime lanuginosi, cito 

 glabri, annotini fusco-purpurei, sparse lenticellati; gemmae ovatae, 

 4-5 mm. longae, perulis late ovatis manifeste mucronulatis castaneis 

 extus margine villoso excepto glabris. Folia subchartacea, ovata vel 

 elliptico-ovata, acuminata, basi late cuneata, rarissime fere rotundata, 

 argute serrata dentibus initio setoso-acuminatis, demum manifeste 

 acuminatis plerumque leviter accumbentibus, 5-11 cm. longa et 3.5- 

 6 cm. lata, initio utrinque laxe araneoso-lanuginosa, cito glabra, supra 

 saturate luteo-viridia, subtus paullo pallidiora, leviter reticulata; 

 petioli graciles, 2.5-7 cm. longi, initio sparsissime lanuginosi, cito glabri. 

 Inflorescentia umbellato-racemosa, 7-10-flora, rhachi, pedicellis, re- 

 ceptaculis sparse lanuginosis, mox glabris; pedicelli 1.5-3 cm. longi, 

 bracteolis 2 subulatis circiter 5 mm. longis instructi; sepala e basi 

 late triangulari acuminata, circiter 4 mm. longa, glanduloso-serrata, 

 extus glabra, intus fulvo-lanuginosa; petala ovalia, apice plerumque 

 irregulariter erosa, basi breviter unguiculata, 12-14 mm. longa et 

 10-12 mm. lata, alba; stamina circiter 20, petala dimidia aequantia; 

 styli 5 vel interdum 4, stamina subaequantes, glabri. Pomum sub- 

 globosum vel globoso-ovoideum, 2.5-3 cm. longum et circiter 2.5 cm. 

 diam., apice cicatrice impressa calycis decidui notatum, basi subito 

 in pedicellum 3-4 cm. longum contractum, pendens, flavum, pallide 

 et minute punctulatum, 5- vel rarius 4-locuIare; semina obovoidea, 

 leviter compressa, 6-7 mm. longa, castanea. 



Arnold Arboretum, cultivated, April 22, 1910 and October, 1908 

 (type, raised from seed sent by Dr. E. Bretschneider from Peking in 

 1882). 



This species seems nearest to P. ovoidea Rehder which is easily 

 distinguished by the persistent calyx and by the more oblong-ovate 

 leaves rounded or even subcordate at the base. In its deciduous calyx 

 it agrees with P. jihaeocavpa Rehder, but this species differs in its 

 smaller 3-4-celled brown fruit and the coarser serration of the more 

 oblong-ovate leaves. Pyrus Bretschneideri may be the pear alluded 

 to by Bretschneider (Hist. Eur. Bot. Discov. 830) as pai-li (white pear), 

 though this name may also apply to P. ussuriensis or to P. ovoidea. 



5. Pyrus serotina Rehder, sp. n. 



Arbor 7-15-metralis; ramuli hornotini glabri vel initio laxe villosuli, 

 rarius tomento floccoso densius obtecti, mox glabri, annotini et vetu- 



