PLATANUS 



size it attains— trunks of 30 ft. diameter and more are 

 reported to exist— and lias been planted as a shade tree 

 in W. Asia and S. Europe, and to-day it is still one of 

 the favorite street trees throughout the temperate re- 

 gions of Europe. It has also been recognized in this 

 country as one of the best street trees, even to be pre- 



1367 



4.-V! 



^'^i 





lioh, unfortunately, suffers 

 rlaosporium nervisequum, 

 red by it. The Plane-trees 

 pruning-well. To what 

 nined in European cities 

 ■i shown in an interesting 



olo with the enlar;;. 

 illary bud: Ivs. pa 

 densely with stellat. 

 monoecious, in den-, 

 nate and pistillat. 



with .-1-8 M, -..I,. ■ 



occidentilis, Linn. BrxTONWooD. Bit- 

 r.iNBAi.i.. American Plane-tkee. Also 

 wrongly railed Sycamore. Figs. 1846, 1847. 

 I^arge tree, attaining I.'iO or occasionally 170 ^j. 

 ft., with a round-topped oblong or broad head 

 imd with a trunk 10 ft. or e.xceptionally more 

 in diam., often of considerable height: bark 

 :if liiiil.a,,.! I.ra,,.-!..-, ..f ^r,■v 1,^1,, ..flcn al- 

 io. -t .-|-i-:.lii\ ^^l,ll.■ r,,l..i-, :,l ih. [,,,„. „f the 



Iniiii^- .l;-.-|.. I.!'-.--, ;i, ii-.-in. -I • ^.ii.-.i,., large, 

 ivith l....tii.-,i mar-Ill : Iv-. a- l.r..r..i ..r broader 



floccose-tomentose when young, at maturity only pul 

 cent on the veins beneath. 4-9 in. broad: fr. -heads s 

 tary, rarely in 2's, ..ii :;-i;-in. I.-.n- p.-. Inn. -I.--, al...iit 1 



; 1 in. 



iitlets 



with obtuse ai..-\. ■-. iili ili. r. -i 

 teenth inch lou^' ..i ,li..ri. i . .Ma} 

 Minn., south to lia. and Tex. 

 2:354,355; 9:55. Em. 1:2U1, 203. 

 G9; 5, p. 205, 209.-The most : 

 tallest of all deciduous trees of N. America and an excel- 

 lent street and park tree where it is not injured by fun- 

 gous diseases. There are several vars. in cultivation: 

 Var. Hispdnica, Janko {P. Hispdnicn, Lodd.). Lvs. 

 large, 3-5-lobed, with very shallow sinuses, coarsely 

 toothed, usually cordate at the base. Gn. 1, p. 588; 

 •_'0, p. 370. Var. pyramidilis, Jaen. (P. pyramidiilis, 

 BoUe). Of pyramidal habit: lvs. usually 3-lobed, often 

 longer than broad, with usually rounded base. Var. tu- 

 bifera, Jaen. (P. snpirba, Hort.). With very conspicu- 

 ous elongated, tubular stipules. There are also some 

 forms with variegated lvs. Var. Siittneri, Hort., with 

 the Ivs. spotted and marked white, and var. aureo-vari- 

 egita, Hon. (var. Kelseydna, Jaen.), with yellow varie- 

 gated leaves. 



orientillis, Linn. Oriental Plane. Tree, to 80 ft., 

 with usually very broad and round head on a compara- 

 tively short trunk : bark of dull grayish or greenish 

 white color; stipules small, usually with entire margin: 

 lvs. usually broadly cuneate at the base, deeply 5-7- 

 lobed, rarely 3-lobed, with the sinuses reaching almost 

 to or below the middle; lobes longer or much longer 

 than broad, coarsely toothed or entire, glabrous or 

 nearly so at maturity, 4-8 in. long: fr.-heads 2-4 on long, 

 drooping stalks, bristly, the nutlets narrowed at the 

 apex into a persistent style to 2 lines long. May. S. E. 

 Eu. to India. G.F. 4:91. 0.0.111.23:25,27. Gn. 1, p. 

 550; 20, p. 3()9, S71, ;!::!. \ variaMf- ^i.,-nies, of which 



the most import:.. . . i-- .i- .ii.i.-: Var. aceri- 



fdUa, Ait. (P. .. - - . w i - /■ ,..•<?;«, Hort.). 



Lvs. less dee].!} , . . [y reaching be- 



low the middl.-: I ■:-. ~ II ii,!i, -.K' I 11.1. lie one only 

 little longer than broad: fr.-in-a.l- n-nalh in -.'s. Gn. 

 1, p. 588; 20, p. 371 and probably 1. ].. l-r, an. I ■jn, ji. 370 

 (as P. occidentalis). This form r. -.-mM. - in foliage 

 the American Plane, and is alsn ..I' iii.,i. |.\ rami. lal habit 



than the Oriental Plane, win. 1 i -v^i.-ai form has 



a broad head, with wil. . . .luhes deeply 



divided, 5-7-lobed lvs..ai : -K often in 3's 



and 4's. It is often con-i.i. i . .1 ;. .ii i m.-t species, and 

 some have ventured the opiiuuji iliai n may be a hybrid 

 between P. occiclenfaUs and P. orUutulis, as it is in 

 some characters intermediate between the two, but the 

 fr. does not differ from that of the latter. The var. 



arerifiMia, which is the so-called London Plane, seems 

 hardier and is more generally planted under the name 

 of the Oriental Plane than the typical P. orientalis. 

 Var. digit^ta, Janko {P. umbraculifera , Hort., var. la- 



