370 WILSON EXPEDITION TO CHINA 



serrata dentibus latissime ovato-triangularibus mucronatis, 5.5-10.5 cm. longa et 

 4r-9 cm. lata, supra laete viridia, glabra, subtus pallidiora, pilis stellatia brevibus 

 albidis laxe conspersa, nervis utrinsecus 6-9, ut trabeculae satis distantes subtus 

 elevatis; petioli graciles, glabri, 4r-7 cm. longi. Flores non visi; peduncuU et 

 pedicelli subteretes, laxe brevitcr stellato-pilosi; bracteae anguste oblongae, obtusae, 

 basi plerumque attemiatae, 5-7 cm. longae et 1-1.5 cm. latae, utrinque etellato- 

 pubescentes, subsessilea v. breviter stipitatae, infra medium pedunculo adnatae. 

 Fructus 1-3, ovoideus v. obovoideus, 8-10 mm. longus et 6-7 mm. latus, obscure 

 5-costatu8, styli basi brevissimo coronatus, dense tomento stellato brevissimo 

 cinereo-albido vestitus. 



Kansu: Lotani, south of Min-chou on road to Siku, alt. 2600-2800 m., 

 August 13, 1911, W. Purdom, type; Min-chou, alt. 2600 m., 1911, W. Purdom. 



We are without any precise information on this interesting Linden which in ap- 

 pearance is markedly different from all other Chinese species. It is apparently 

 most closely related to T. chinensis Maximowicz, which is a much more hairy 

 plant with thicker, more strongly veined leaves covered with a thin gray tomentum 

 on the under side and very sharply angled fruit. In a general way it has some re- 

 semblance to T, paucicostata Maximowicz, but this more glabrous plant with small 

 leaves, relatively large quite glabrous bracts and numerous small flowers and non- 

 costate fruit belongs to an entirely different section of the genus. 



Tilia mandshuria Ruprecht & Maximowicz in Bull Acad. Sci. St. Peiershovxg, 

 XV. 124 (1856); in Mel Biol. II. 413 (1857). — Maximowicz in Mem. Sav. Etr. 

 Acad. Sci. St. Petershourg, IX. 62 {Prim. Fl. Amur,) (1859); in Bull. Acad. Sci. 

 St. Petersbourg, XXVI. 434 (1880); in Mel. Biol X. 586 (1880). — Bayer in Verh. 

 Zool-Bot. Ges. Wien, XII. Abh. 48 (Monog. Tilia) (1862). — Baker & Moore 

 in Jour. Linn. Soc. XVII. 380 (1879). — Pranchet in Nouv. Arch, Mus. Paris, s^r. 

 2, V. 212 (PI David. 1. 60) (1883). — Komarov in Act. Hart. Petrop. XXV. 28 

 (1907).— Schneider, III Handh. Laubholzk. 11. 384, fig. 257 i-k (1909). — V. 

 Engler, Monog. Tilia, 114 (1909). 



Tilia argentea Hort. Paris apud Regel in Bull Acad. Sci. SL Pitersbourg, XV. 



216 (non De Candolle) (1857); in Mel Biol II. 482 (1857). 

 Tilia argentea, j3 mandshuria Kegel in Mem. Acad. Sci. Si Pilershourgy ser. 7, 



IV. No. 4, 30 (Tent. Fl Ussur.) (1861). 

 Tilia pekinensis Ruprecht apud Maximowicz in Mem. Sav. Str. Acad. Sci. 



St. Petersbourg, IX. 469 (Prim. Fl Amur.) (nomen nudum) (1859). — Bayer 



in Verh. Zool-Bot. Ges. Wien, XII. Abh. 49, t. 9, fig- 3 (Monog. Tilta) 



(1862). 

 Tilia mandschuria, var. pekinensis V. Engler apud Schneider, lU. Handb. 



Laubholzk. II. 384 (1909). —V. Engler, Monog. Tilia, 115 (1909). 



Chili: Weichang, 1909, W. Purdom (Nos. 53, 53«); near San-tun-ying, 

 mountain slopes, June 2, 1913, F. N. Meyer (Nos. 129, 991); Hsiao Wu-tai-shan, 

 alt. 1600-2300 m., August 20, 1913, F. N. Meyer (Nos. 130, 1245). Mand- 

 shuria : Shengking, Tsien-shan mountains, June 9, 1906, F. N. Meyer (No. 123); 

 Mukden, east Tomb, May 29, 1906, F, N. Meyer (No. 100); east of Harbin, 

 mountains, August 31, 1903, C. S. Sargent. Korea: Chmnampo, September 17, 

 1905, J. G, Jack; Diamond Mountain, June 24, 1906, U. Faurie (No. 490). 



On young trees and on very vigorous shoots or adventitious branches the 

 leaves are often more or less three-lobed. 



