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 em. longo demum purpurascente 10-18 cm. longa, 
12-13-juga; rhachis superne angustissime alata, laxiuscule lanata 
dein glabrescens, interstitiis circiter 1 em. 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 illine 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, 
retieulo supra prominulo subtus inconspicuo, papyracea demum 
subeoriacea; epidermis supra laevis, subtus valide retieulato-papillosa 
papillis apice scabris. Inflorescentiae ramulos laterales abbreviatos 
(quorum pars vetustior circiter 2 em. longus) terminantes (an etiam 
ramulos longiores?), 13-14 em. 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. pluripinnata (Schneider) Koehne (S. 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 em. longae, glabrae v. subglabrae. Stip- 
ulae siccae, parvae, lanceolatae v. oblongae, cireiter 3-5 mm. longae, 
integrae v. apice denticulatae, sub anthesi persistentes; folia cum 
petiolo 2.5-5 em. longo 13-20 em. longa, 3-4-juga; rhachis e facie 
superiore alata, sed alis plerumque inflexis, glabra v. subtus laxiuscule 
rufo-villosa, interstitiis 2-2.5 em. longis; foliola infima 2 paullo v. 
