ACERACEAE. — ACER 87 
truncata v. subcordata, 10-18 cm. lata et 9-16 cm. longa, lobis late 
ovatis brevibus, subito.longe acuminatis, basalibus interdum minutis 
v. fere obsoletis, sinubus late apertis, supra glabra, obscure viridia, 
subtus laete viridia, glabra axillis barbatis exceptis, initio ut supra 
sparse glandulosa, interdum ad basin puberula, maturitate reticu- 
lata; petioli graciles, glabri v. apice tantum puberuli, 7-10 cm. longi. 
Corymbus fere sessilis v. pedunculo vix 5 mm. longo, amplus et 
laxus, 12-15 cm. diam., glaber, pedicellis gracilibus perianthio longi- 
oribus; flores 12 mm. diam.; sepala oblonga, apice obtusa, glabra, 
5 mm. longa, viridi-alba; petala obovata v. oblongo-ovata, basi con- 
tracta, 6 mm. longa et 3-4 mm. lata, alba; stamina petalis breviora; 
ovarium glandulosum; stylus 1.5 mm. longus stigmatibus recurvis 
stylum aequantibus. Samara alis angulo obtuso v. recto divergenti- 
bus loculo leviter venoso 11 mm. longo et 7 mm. lato incluso 3.5-4.5 
cm. longis et 12-15 mm. latis, medio latissimis, pallide brunneis. 
Western Hupeh: Patung Hsien, woodlands, alt. 1500-1800 m., 
June and July 1907 (Nos. 1906, 1938); without locality, April and 
May 1900 (Veitch Exped. Nos. 287, 605). 
Acer amplum is nearly related to A. cappadocicum Gleditsch, which differs chiefly 
in its smaller long-peduncled inflorescence and smaller leaves with narrower and 
longer lobes. It forms with A. catalpifolium and A. longipes a group of closely 
related species characterized by the sessile ample inflorescence. 
Acer amplum, var. tientaiense Rehder, n. comb. 
Acer longipes, var. tientai C. K. Schneider, IU. Handb. Laubholzk. II. 224 
Folia plerumque trilobis interdum utrinque lobo basali minuto in- 
structa, latiora quam longa, 7-16 cm. lata et 6-14 cm. longa, basi 
plerumque truncata, utrinque glabra, lobis oblongo-ovatis longe 
acuminatis, margine undulato. Samara alis loculo incluso 2.5-3.5 cm. 
longis plerumque vix 1 cm. latis. Ceterum ut in typo. 
Chekiang: Tientai Mts., 1889, E. Faber (No. 202). Kiangsi: 
Kuling, near temple, alt. 1200 m., July 29, 1907 (No. 1502). 
"This variety differs from the type chiefly in its smaller more often 3-lobed leaves 
with longer and narrower lobes and in the smaller fruits with narrower wings. The 
Specimens from Kuling approach the type in the larger mostly 5-lobed leaves and 
the somewhat larger fruits. 
Acer catalpifolium Rehder, n. sp. ; 
Arbor 10-23 m. alta; truneus ad 1.20 m. diam., cortice pallido 
cinereo-flavido interdum  decorticante et corticem interiorem cin- 
namomeum detegente obtectus; ramuli juniores glaberrimi sine len- 
