TILIACEAE. 



Determined by Alfred Rehder and E. H. Wilson. 



TILIA L. 



Tilia paucicostata Maximowicz in Act. Hort. Petrop. XL 82 (1890). — 

 Schneider, III. Handh. Lauhholzk. II. 371, fig. 250 n-o (1909).— 

 V. Engler, Monog. Tilia, 87 (1909). 



Tilia Miqueliana, var. chinensis Diels in Bot. Jahrb. XXXVI. Beibl. LXXXII. 

 75 (non Szyszylowicz) (1905). 



Tilia paucicostata, var. a finna V. Engler apud Schneider, III. Handh. Lauh- 

 holzk. II. 371 (1909). — V. Engler, Monog. Tilia, 88 (1909). 



Tilia paucicostata, var. fi tenuis V. Engler apud Schneider, III. Handh. Lauh- 

 holzk. II. 371 (1909).— V. Engler, Monog. Tilia, 88 (1909). 



Western Hupeh: Hsing-shan Hsien, woods, alt. 1600-2000 m., 

 July and November 1907 (No. 594; tree 8-13 m. tall, 1-2 m. girth); 

 Fang Hsien, mountains, July 1901 (Veitch Exped. No. 2422; tree 

 10 m. tall); mountains north of Nanto, July 1900 (Veitch Exped. 

 No. 1532; tree 13 m. tall). 



This is a small and not common tree which grows scattered through the woods 

 and forests of northwestern Hupeh. The branches are slender and glabrous, and 

 the winter-buds are relatively large, ovoid, acutish, glabrous and purple. The 

 leaves are membranous and vary somewhat in shape with a base which is cordate, 

 truncate or abruptly broad-cuneate. On flowering specimens before us the leaves 

 vary in length from 4 to 7 cm. and in width from 3 to 6 cm. on the same 

 branch: the petiole varies in length from 1.5-4 cm. The fruit on one specimen is 

 somewhat malformed. 



We have not seen Maximowicz's type, and our material differs slightly from his 

 description, especially No. 594, which has longer petioles, rather narrow leaves 

 of firmer texture, often more or less triangular in outline and somewhat reticulate 

 beneath. Nevertheless, similar small differences occur in many other species of 

 Tilia. 



We have specimens of T. dictyoneura V. Engler, but in the absence of authentic 

 material of T. paucicostata Maximowicz, we cannot say whether Engler's plant 

 represents a distinct species or is merely an extreme state of the one described 

 by Maximowicz. 



Tilia nobilis Rehder & Wilson, n. sp. 



Arbor 8-12-metralis, trunco 1-1.5 cm. in circuitu metiente; ramuli 

 glabri, in autumno saepe glaucescentes; gemmae late ovoideae, 

 obtusae, 0.5-1 cm. longae, glabrae v. apice leviter puberulae, saepe 



363 



