88 WILSON EXPEDITION TO CHINA 



ticellis V. lenticellis perpaucis parvis instruct!, virides v purpurascentes, 

 vetustiores epidermate laevi per plures annos persistente instructi. 

 Gemmae ovoideae, circa 8 mm. longae, olivaceae, glaberrimae, perulis 

 6 V. 8 exterioribus, inferioribus fere semiorbicularibus, superioribus 

 ovatis obtusiusculis. Folia ovata v. ovato-oblonga, longe acuminata, 

 basi rotundata, indivisa et integra v. infra medium utrinque lobo 

 rotundato brevissimo instructa, 9-18 cm. longa et 4.5-12 cm. lata, 

 rarissime foliis 3-5-lobis fere tam latis quam longis, lobis late ovatis 

 longe acuminatis instructis, basi truncatis v. subcordatis intermixtis, 

 utrinque glabra et laete viridia, subtus reticulata et in axillis barbu- 

 lata; petioli glabri, virides, 4-14 cm. longi. Corymbus sessilis, multi- 

 florus, laxus, usque ad 20 cm. diam.; flores desiderantur. Fructus 

 pallide fiavido-brunnei ; alae cum loculis complanatis elevato-striatis 

 4-5 cm. longae et 10-13 mm. latae, rectae, angulo obtuso divergentes. 

 Western Szech'uan: near Ya-chou Fu, side of streams, alt. 800- 

 900 m., October 1908 (No. 1359, in part), alt. 450-600 m., October 

 1910 (No. 4208); west of Kuan Hsien, alt. 900 m., June 17, 1908 (No. 

 1359, in part), without locality. May 1904 (Veitch Exped. No. 3350). 



Acer catalpifolium is nearly allied to A . amplum and to A . longipes, both of which 

 are easily distinguished by their three- or five-lobed leaves. Acer longipes, which 

 occasionally produces some undivided leaves, differs besides in the pubescent under 

 side of the leaves. According to Wilson this species is a handsome tree of very dis- 

 tinct appearance with the foUage turning yellow in autumn. 



Acer longipes Franchet apud Rehder in Sargent, Trees and Shrubs, 

 I. 178 (1905). 



Acer laetum, var. tomentosulum Rehder, I. c. 



Western Hupeh: South Wushan, woods, alt. 1800 m., October 

 1907 (No. 434, in part); Fang Hsien, alt. 1600 m.. May 21, 1907 (No. 

 434, in part); Chang-yang, alt. 1600 m., October 1907 (No. 434 in 

 part; Hsing-shan Hsien, woods, not common, alt. 1800 m.. May 10, 

 1907 (No. 1909). 



Additional material has shown that the leaves are sometimes five-lobed, and 

 that apparently my A. laetum, var. tomentosulum, which was based on a flowering 

 specimen with only half grown leaves, belongs to this species, so that now the 

 pubescence of the foliage constitutes the chief character by which to distinguish 

 A. longipes from A. cappadocicum and A. amplum. 



Sect. PALMATA 



Acer palmatum Thunberg, Fl Jap. 162 (1784). 

 Kiangsi: Ruling, thickets, alt. 1200 m., July 28 and 31, 1907 (Nos. 

 1504, 1505). 



