228 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Pirus sinensis a. assuriensis Makino in Tokyo Bot. Mag. XXII. 69 (1908). 

 Pirus sinensis a. silvestris Makino msc. ex Makino, I.e., quasi synon. 



Chili: "China bor.," ex herb. Bunge (Gray Herb.); Hsiao Wu- 

 tai-shan, August 20, 1913, F. N. Meyer (No. 1232). Amurland: 

 " montes Burejae," 1859, Maximowicz (Gray Herb.); " Amur medius," 

 May 18, 1891, S. Korshinsky. Ussuri: without precise locality, 

 Ma.vimoivicz (Gray Herb.). Manchuria: Khabarovsk, cultivated, 

 August 23, 1903, C. S. Sargent. 



This species differs from the allied species chiefly in the short stalk 

 of the globose fruit with persistent calyx, in the broad, often nearly 

 orbicular, strongly setosely serrate leaves and in the lighter yellowish 

 brown color of the branches; the flower clusters are, owing to the short 

 stalks rather dense and hemispherical; the petals are obovate and 

 rather gradually narrowed toward the base; the styles are distinctly 

 pilose near the base. 



Pyrus ussariensis was first introduced into cultivation by Richard 

 Maack who sent seeds to the Botanic Garden at St. Petersburg, but 

 the tree is still rare in gardens. 



2. Pyrus ovoidea Render, sp. n. 



1 Pyrus chinensis Roxburgh, Hort. Bengal. 38 (1814), nomen nudum, non 



Pyrus sinensis Poiret; Fl. Ind.ed. 2, II. 511 (1832). 

 Pyrus sinensis Hemsley in Jour. Linn. Soc. XXIII. 257 (1887), pro parte, 



non Poiret, nee Lindley — Diels in Bot. Jahrb. XXIX. 38 (1900), pro 



parte. — Schneider, III. Handb. Laubholzk. I. 663, fig. 364 c-d (1906), 



pro parte. 

 Pyrus Simonii Hort., non Carriere. 



Arbor pyramidalis, 10-15-metralis, inermis; ramuli hornotini 

 maturi purpureo-fusci v. flavo-fusci, nitiduli, vetustiores castanei, 

 lenticellis parvis paucis conspersi; gemmae conico-ovoideae, castaneae, 

 glabrae. Folia ovato-oblonga, rarius ovata, acuminata, basi rotun- 

 data v. subcordata, argute setoso-serrata dentibus erecti-patentibus v. 

 interdum accumbentibus, 7-12 cm. longa et 4-6.5 cm. lata, initio 

 ad marginem tantum et subtus ad costam tomento floccoso fulvo cito 

 evanescente praedita, mox glaberrima, supra luteo-viridia, lucida, 

 subtus paullo pallidiora, maturitate chartacea et autumno colore 

 pulchro purpureo-scarlatino et aurantiaco gaudentia, utrinsecus nervis 

 9-10 supra et subtus leviter elevatis; petioli graciles, 2.5-5 cm. longi, 

 initio sparse floccoso-lanati, mox glaberrimi. Flores circiter 3 cm. 

 diam., in racemis umbelliformibus 5-7-floris glabris v. interdum to- 

 mento floccoso cito evanescente vestitis; pedicelli 2.5-4 cm. longi; 



