260 WILSON EXPEDITION TO CHINA 



With the rich matGrial of the Wilson collection before me, I have no doubt that 

 the imperfectly known Fraxinus densiflora Lingelsheim is the same as Fraxinus 

 Paxiana. This tree is cultivated in the Arnold Arboretum. The cultivated as 

 well as the wild plants show great variability in form and consistence of the leaves. 

 In some cases the basis of the rhachis is dilatated as is that of Fraxinus Spae- 

 thiana Lingelsheim known from cultivated plants only, or of Fraxinus platypoda 

 Oliver from Hupeh, which resembles this species in the shape of the leaves, but 

 differs in having a papillose epidermis. 



Pictures of this tree will be found under Nos. 358 and 083 of the collection 

 of Wilson's photographs and in his Vegetation of Western Chinaj No. 228. 



Fraxinus Mariesii Hooker f . in BoL Mag. XXXIV. t. 6678 (1883) 

 Hemsley in Jour. Linn, Soc. XXVI. 86 (1889). — Dippel, Handb. 

 Laubhohk, I. 67 (1889). — Koehne, Deutsche Dendr. 508 (1893). 

 Schneider, III Handb. Lauhholzk. II. 818 (1912). 



Kiangsi: Kuling, thickets, side of streams, rare, alt. 1300 m., 

 July 1907 (Nos. 1590, 1591; bush 2-3 m. tall); same locality, 

 thickets, rare, alt. 1200 m., August 1907 (No. 1592; bush 2 m. tall, 

 with wild white wax). 



Mr. Wilson has discovered the interesting fact that white wax is also produced 

 on Fraxinus Mariesii as well as on Fraxinus chinensis Roxburgh, the genuine 

 white wax tree, ** pe-la-shu " of the Chinese. 



Subsect. Ornaster Koehne & Lingelsh. 



Fraxinus chinensis Roxburgh, FL Ind, I. 150 (1820). — G- Don, 

 Gen, Syst IV. 55 (1838). — Loudon, Arh, BriL II. 1240 (1838). — De 

 Candolle, Prodr, VIII. 277 (1844). — Hemsley in Jour. Linn. Soc 

 XXVI. 85 (1889). — Wesmael in Bull. Soc. Bat. Belg. XXXI. 104 

 (1892). — Lingelsheim in Bot. Jahrb. XV. 216 (1907). 



Fraxinus chinensis, var. typica Lingelsheim in Bot. Jahrb. XL. 216 



(1907). 



Western Hupeh: Ichang, margins of cultivated areas, alt. 300- 

 1000 m., May, June 1907 (No. 1337 in part; tree 8-10 m. tall); 

 Ichaug, planted, but no white wax raised, alt. 300-1000 m., October 

 1907 (No. 1337, in part); Ichang Fu, alt. 300-1000 m., June 10, 

 1907 (No. 1337, in part); without precise locality, April 1900 

 (Veitch Exped. No. 77). Western Szech'uan: Kiating Fu, culti- 

 vated for white wax, alt. 300-500 m., September 4, 1908 (No. 

 1337, in part; tree 3-7 m. tall); without precise locality, cultivated 

 for white wax, July 1903 (Veitch Exped. No. 4085). 



