462 WILSON EXPEDITION TO CHINA 



Sorbus scalaris Koehne, n. sp. 



Frutex 5-7-metralis; rami 3-4 mm. diam., cinerei; gemmae 6 mm. 

 longae, summo apice tantum albo-sericeae. Stipulae herbaceae, 

 superiores magnae ad 11 mm. latae, dentatae, persistentes; folia cum 

 petiolo 1.5-2.5 cm. longo demum purpurascente 10-18 cm. longa, 

 12-13-juga; rhachis superne angustissime alata, laxiuscule lanata 

 dein glabrescens, interstitiis circiter 1 cm. longis; foliola media aequa- 

 lia, cetera inde a pari circiter quarto deorsum, a pari nono v. decimo 

 sursum decrescentia, patentissima quasi scalam imitantes, basi hinc 

 subcordata illinc obtusa, late linearia marginibus rectis parallelis, 

 media 2.2-4 cm. longa, 0.5-0.8 cm. lata, obtusa v. acuta, apice tantum 

 dentibus utrinsecus 1-6 argute serrulata, supra subcano-viridia glabra, 

 subtus albida laxeque arachnoideo-lanata, costa subtus ochracea, 

 nervis utrinsecus circiter 11-13 supra impressis subtus prominentibus, 

 reticulo supra prominulo subtus inconspicuo, papyracea demum 

 subcoriacea; epidermis supra laevis, subtus valide reticulato-papillosa 

 papillis apice scabris. Inflorescentiae ramulos laterales abbreviatos 

 (quorum pars vetustior circiter 2 cm. longus) terminantes (an etiam 

 ramulos longiores?), 13-14 cm. latae, 8-10 cm. longae, confertiflorae 

 glomerulis saepe subremotis, dense albo-lanatae demum plus minus 

 glabratae; flores mense Junio aperti; cupula sepalaque glabra; petala 

 circiter 3.5 mm. longa, brevissime late unguiculata, rotundato-ovata, 

 glabra, alba, staminibus circiter aequilonga; carpidia 3 v. 4, summo 

 apice tantum segregata, apice villosa. Fructus globosus circiter 5 

 mm. diam., ruber, sepalis conniventibus. 



Western Szech'uan: Wa-shan, woods, alt. 2000-2600 m., June 

 and October 1908 (No. 922). 



This species is very near S. pluripmnaia (Schneider) Koehne (5. foliolosa, var. 

 pluripinnata Schneider); but this latter has only 10-12 pairs of shorter leaflets, 

 an inflorescence 9 cm. in diameter and carpels separated to the placenta. Sorbus 

 pluripinnata has no close connection with S. foliolosa; and Schneider seems to have 

 overlooked its large herbaceous stipules which are wanting in S. foliolosa. 



Sorbus Helenae Koehne, n. sp. 



Arbor 3-7-metralis ; rami 5-8 mm. diam., cinerei v. nigricantes; 

 gemmae sub anthesi 0.7-0.9 cm. longae, glabrae v. subglabrae. Stip- 

 ulae siccae, parvae, lanceolatae v. oblongae, circiter 3-5 mm. longae, 

 integrae v. apice denticulatae, sub anthesi persistentes; foHa cum 

 petiolo 2.5-5 cm. longo 13-20 cm. longa, 3-4-juga; rhachis e facie 

 superiore alata, sed alls plerumque inflexis, glabra v. subtus laxiuscule 

 rufo-villosa, interstitiis 2-2.5 cm. longis; foliola infima 2 paullo v. 



