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. tientaiense C. K. Schneider, III. Handb. Lauhholzk. II. 224 

 (1907). 



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; truncus ad 1.20 m. diam., cortice pallido 

 einerco-flavido interdum decorticante et corticem interiorem cin- 

 namomeum detegente obtectus; ramuli juniores glaberrimi sine len- 



