268 WILSON EXPEDITION TO CHINA 



sim decurrentibus 11-14 cm. longis, et praecipue fructibus minoribus 

 ovoideis circiter 1.5 cm. longis et 1 cm. diam. brunneo-viridibus moUi- 

 oribus et magis succulentis. 



Western Szech'uan: Mupin, woodlands, alt. 2400-2700 m., Octo- 

 ber 1910 (No. 4215; tree 5-8 m. tall, fruit russet-green). 



This variety differs from the type chiefly in its smaller softer fruit and in the more 

 cuneate short-stalked leaves; in all other characters it agrees with the ty])e, par- 

 ticularly in the peculiar conical thickening of the base of the connate styles, as it 

 appears on the fruit. 



Sorbus aronioides Rehder, n. sp. 



Frutex v. arbor, 4-12-metralis; ramuli ab initio fere glabri, annotini 

 fusco-grisei v. purpureo-fusci, sparse lenticellis parvis instructi; gem- 

 mae ovatae, acutiusculae, glabrae, pauci-perulatae. Folia decidua, 

 matura chartacea, breviter petiolata, elliptica v. elliptico-obovata v. 

 elliptico-oblonga, acuminata, basi sensim attenuata v. interdum satis 

 late cuneata, inaequaliter minute serrata, 6-12 cm. longa et 2.5-5 cm. 

 lata, supra glabra, ad costam plerumque glandulis sparsis obsita, luteo- 

 viridia, subtus paullo pallidiora, initio ad costam nervosque densius, 

 in facie sparsissime araneoso-lanuginosa, mox glabra, nervis utrinsecus 

 7-10 leviter curvatis ante marginem in venulas dissolutis; petioli 0.5-1 

 cm. longi, lamina decurrente plus minusve marginati, glabri. Corymbi 

 multiflori, satis densi, 3.5-5 cm. diam., glabri; pedicelli 2-5 mm. longi 

 ut calyx extus glaberrimi; sepala orbiculari-ovata, rotundata, margine 

 villoso-ciliata, ceterum glabra; petala irregulariter ovalia, circiter 4 

 mm. longa, breviter unguiculata, alba; stamina circiter 20, inaequalia, 

 longiora petalis subaequilonga, antheris late ovalibus fuscis; discus 

 cupuliformis : ovarium totum inferum, carpellis undique connatis; 

 styli 2-3, rarius 4, ad medium usque connati, glabri, staminibus mani- 

 feste breviores, circiter 3.5 mm. longi. Fructus ovoideus, 9-11 mm. 

 longus, 8-9 mm. diam., apice cicatrice calycis decidui medio umbilicata 

 notatus, in sicco ruber, laevis; semina immatura obovoidea, compressa, 

 castanea. 



Western Szech'uan: Wa-shan, thickets, alt. 2300-3000 m., 

 June 1908 (No. 2993, type); southeast of Sungpan, thickets, alt. 

 2300-2600 m., August 1910 (No. 4632); Mt. Omei, June 1904 (Veitch 

 Exped. No. 4867). 



This species is most closely related to S. Keissleri Rehder, which differs chiefly 

 in the villose inflorescence, the subglobose fruits, the stouter and shorter petioles, 

 and in the broader, more obovate and more coarsely crenate-serrate leaves. 



