474 WILSON EXPEDITION TO CHINA 



laxi- ac pauciflorae, parce tenere villosae, axibus purpurascentibus; 

 flores fine mensis Junii aperti; cupula glabra, sepala intus villosa; 

 petala cum unguiculo fere 1 mm. longo lato 5 mm. longa, late ovata, 

 in laminae basi supra lanato-barbata, alba, staminibus circiter triente 

 longiora; carpidia 5, tota connata, glabra; styli fere semieonnati, 

 glabri. Fructus ignotus. 



Western Szech'uan: Pan-lan-shan, west of Kuan Hsien, woods, 

 alt. 3800 m., June 24, 1908 (No. 3003). 



Sorbus pogonopetala differs from all other Chinese species with numerous small 

 leaflets in its strongly bearded petals; it is also remarkable in the purplish black 

 color of its petioles and rhachis. 



Sorbus unguiculata Koehne, n. sp. 



Frutex 2-5-metralis; rami 2-4 mm. diam., cinerei v. fusco-cinerei; 

 gemmae 0.4-0.5 cm. longae, subsericeae v. glabratae. Stipulae 

 herbaceae sed parvae, ad 5 mm. longae, dentibus paucis incisae v. 

 dissectae, raro integrae; folia cum petiolo 0.5-1.8 cm. longo 5.5-13.5 

 cm. longa, (9-)12-16-juga; rhachis anguste alata, subtus plus minus 

 ruf o-pubescens demum glabrata, interstitiis 0.5-0.8 cm. longis; fohola 

 inde a tertio v. quarto pari deorsum sensimque v. vix sursum decres- 

 centia, basi subito contracta v. hinc obtusa illinc subacuta, oblonga 

 V. ovalia, in innovationibus saepe angustius oblonga marginibus 

 subparallelis, media 1-1.8 cm. longa, 0.4-0.7 cm. lata, obtusa saepeque 

 mucronato-cuspidata, rarius acuta, basi v. tertia parte Integra ceterum 

 argute serrulata dentibus utrinsecus circiter 4-13, supremis conniventi- 

 bus, supra glabra, subtus paullo pallidiora glabra v. plerumque parce, 

 in costa densius rufo-pubescentia v. villosiuscula demum glabrata, 

 nervis utrinsecus circiter 6-8 saepe obsoletis reticuloque tenerrimis 

 subtus saturatius coloratis, papyracea; epidermis utrinque laevis v. 

 subtus striis rarissimis obsita. Inflorescentiae suppetentes omnes 

 ramulos brevissimos laterales terminantes, 2.5-5.5 cm. latae, 3.5-5 cm. 

 longae, planae v. subconvexae, sublaxiflorae, parcissime densiusve 

 pubescentes v. villosiusculae demum glabratae; flores mense Junio 

 aperti; cupula parce v. densiuscule pubescens, sepala extus glabra v. 

 pubescentia, intus villosiuscula; petala cum unguiculo limbum di- 

 midium aequante lato circiter 5-5.5 mm. longa, trapezoideo-rotundata, 

 glabra, alba, staminibus triente longiora; carpidia 5 v. raro 4, tota 

 connata, glabra, styli basi connati, glabri. Fructus globosus, circiter 

 6-9 mm. diam., albus v. pallide purpurascens, sepalis conniventibus. 



WesternSzech'uan: Tachien-lu, thickets, alt. 2600-3300 m., 



