86 WILSON EXPEDITION TO CHINA 



Acer cappadocicum, f. tricaudatum Rehder, n. comb. 



Acer laeluvi, var. tricaudatum Rehder in Sargent, Trees and Shrubs, I. 178 

 (1905). 

 Western Hupeh: Fang Hsien, cliffs, alt. 1700 m., May 14, 1907 

 (No. 1892) . WesternSzech'uan: west of Tachien-lu, side of streams, 

 alt. 2700-3000 m., October 1908 (No. 1358). 



In No. 1358 the wings of the fruit are scarcely twice as long as the nutlets and 

 the fruits much resemble those of A. pictum Thunberg, but the bark shows the 

 character of A. cappadocicum. Acer cappadocicum, f . tricaudatum is apparently only 

 a form of the preceding variety and possibly the variation is not even constant. ^ 



Acer amplum Rehder, n. sp. 



Arbor 5-12 m. alta ramulis junioribus glabris viridibus v. purpureo- 

 viridibus laevibus lenticellis parvis paucis institutis epidermate per 

 plures annos persistente. Gemmae subglobosae, pallide olivaceae, 

 perulis circa 6 exterioribus obtusis glabris margine minute ciliato 

 excepto, perulis interioribus accrescentibus extus pilis fulvis appres- 

 sis vestitis. Folia chartacea, quinque-loba, latiora quam longa, basi 



1 The change of the specific name makes necessary, besides those mentioned 

 above, the following new combinations of varietal names: 



Acer cappadocicum, f. horticola Rehder, n. comb. 

 Acer laetum, f. horticola Pax in Bot. Jahrb. VII. 238 (1886). 

 Acer laetum, f. rubrum Schwerin in Gartenfl. XLII. 459 (1893). 

 Acer cappadocicum, f. tricolor Rehder, n. comb. 



Acer laetum, f. tricolor Schwerin in Gartenfl. XLII. 459 (1893). 

 Acer cappadocicum, var. indicum Rehder, n. comb. 

 Acer cultratum Wallich, PI. As. Rar. II. 4 (1831). 



Acer Lobelii, subsp. laetum, var. indicum Pax in Bot. Jahrb. VII. 237 (1886). 

 Acer laetum, var. indicum Schwerin, Gartenfl. XLII. 459 (1893). 

 Acer laetum, var. cultratum Pax in Engler, Pflanzenreich, Heft. 8 (IV. 163), 48 

 (1902). 

 Of the other published names two, Acer laetum, var. colchicum Pax and Acer 

 laetum, f . viride Hesse represent the type and need therefore no new names, while 

 the two following varieties must be referred to other species. 



Acer laetum, var. tomentosulum Rehder is identical with Acer longipes Franchet. 

 It was originally based on a flowering branch with undeveloped, only partly un- 

 folded leaves, apparently quite different from those of A. longipes, of which I also 

 had seen at that time only a few specimens. Additional material, however, recently 

 received convinced me that it cannot be separated from A. longipes. 



Acer laetum, var. Regelii Pax is identical with A. turkestanicum Pax in Engler, 

 Pflanzenreich, Heft 8 (IV. 163), 48 (1902), as is shown by the collection of Turkes- 

 tanian Maples of the St. Petersburg Herbarimn, wliich was loaned to me through 

 the kindness of Mr. Lipsky. The leaves are always pubescent beneath, though at 

 maturity the pubescence is sometimes much reduced and hardly noticeable with- 

 out a lens, which probably accounts for the fact that Pax placed the fruiting speci- 

 men under the glabrous A. laetum. 



