ROSACEAE. — COTONEASTER 167 



thickets, alt. 1600 m., June 1907 (No. 2174; bush 2 m. tall, flowers 

 pink); Hsing-shan Hsien, thickets, alt. 2000 m., June 1910 (No. 

 4542; bush 1-2 m. tall, flowers pink); without locality, June 1900 

 (Veitch Exped. No. 1167 and seed number 623); without locality, 

 A. Hennj (Nos. 5463, 7918). Shensi: north-west of Han-chung 

 Hsien, May 1910, W. Purdom (No. 360); Tai-pei-shan, 1910, W. 

 Purdom (no number). 



This is the common Cotoneaster of the thickets in western Hupeh. The oval- 

 elliptic leaves are usually rounded and emarginate or mucronulate but occasionally 

 acute; often all forms are found on the same shoot. The Hupeh specimens appear 

 to have rather shorter, more prominently veined leaves than those from Shensi, 

 the type locality. Purdom's specimen from the Tai-pei-shan has the corymbs 

 larger and more numerous flowered and larger leaves than any of the other speci- 

 mens we have seen. In young plants the leaves are mucronulate and incUned to 

 be acute. 



Cotoneaster gracilis Rehder & Wilson, n. sp. 



Frutex 1-3-metralis; ramuli hornotini dense accumbenti-villosuli, 

 annotini glabri, fusco-purpurei. Folia decidua, ovali-ovata v. oblongo- 

 ovata, rarius ovali-oblonga, obtusa breviter mucronulata, interdum 

 acutiuscula, rarissime emarginata, basi rotundata, 10-25, plerumque 

 15-20 mm. longa et 8-17, plerumque 10-12 mm. lata, supra glabra 

 minute rugulosa, laete viridia, subtus albida, dense papillosa, reticulo 

 venularum impresso et dense tomento cinereo subaccumbenti-villoso 

 obtecta, utrinsecus nervis 3-4 ut costa supra leviter impressis, subtus 

 elevatis; petioli tomentosi, 2-3 mm. longi; stipulae subulatae, rube- 

 scentes, pubescentes, membranaceae, circiter 2 mm. longae. Corymbus 

 lax-US, 3-6-florus, ramulis lateralibus brevibus v. brevissimis plerumque 

 3-foliatis insidens, bracteis bracteolisque membranaceis subulatis ru- 

 bescentibus 1.5-2 mm. longis instructus; pedunculus 0-5 mm. longus, 

 sparse pubescens; pedicelli 2-6 mm. longi, graciles glabrescentes; 

 caljrx glaber, rubescens, dentes late ovati, obtusi v. acutiusculi, inter- 

 dum mucronulati, 2 mm. longi ac lati, sursum sparse pilosi, margine 

 scarioso; petala subrotundata rosea, 2.5-3 mm. longa et 2.5 mm. lata, 

 erecta, basi brevissimeunguiculata; stamina 20, sepalis subaequilonga 

 V. paullo breviora; carpidia 2 (semper?) apice dense villosa. Fructus 

 (immaturus) obovoideus, ad 5 mm. longus, apice truncatus; pyrenae 

 4.5 mm. longae, 3.5 mm. latae, dorso leviter irregulariter foveolatae, 

 ventre stylum paullo infra apicem gerentes, hypostylio dimidium v. 

 fere dimidium dorsum occupante sparse villosulo v. glabro. 



Western Hupeh: Hsing-shan Hsien, thickets, alt. 1700 m., June 

 1907 (No. 2176, type). Western Szeeh'uan: Valley of Hsao-chin 



