206 
WRIGHT : THE GENUS DIOSPYROS 
Ethel Sargant , A Theory of the Origin of Monocotyledons founded 
on the Structure of their Seedlings ; Ann. Bot., Yol. XVIL, No. LXV., 
January, 1903. 
Solereder , Holzstruktur, 1885. 
Thivaites , Enum. Plant. Zeyl., 1860. 
Trimen , Flora of Ceylon, Yol. III. 
Unger, Fossil Ebenaceæ, 1850, 1851, 1866, and 1867. 
Ursprung , Beiträge zur Anatomie und Jahresringbildung tropischer 
Holzarten ; Inaug.-disser. Hohen. Phil. Fac. ; Basel, 1900. 
Ventenat , Tableau du Règne Yégétal, 1799. 
Vesque , Gamopétales, in Ann. sc. nat., Sér. 7, 1885. 
Wallieh , East Indian Plants, 1828-1832. 
Weiss , Korkbild., in Denkschr. Regensb. bot. Gesellsch., 1890. 
Wiesner, Ebenholz, 1870. 
Wight , Icônes Plant. Ind. Orient., t. 1. 227, 1850. 
Willis , Gynodiœcism, &c. (3rd paper) ; Proc. Camb. Phil. Soc., 1893 
Wright , Sex in Diospyros, Brit. Assoc., Belfast, 1902. 
Peradeniya, June 10, 1904. 
Description of Plates I —XX. 
Plate I. —Sections of the timber of (1) D.pruriens , (2) D. hirsuta , 
(3) D. Moonii, (4) D. affinis , (5) D. Melanoxylon , and (6) D. ovalifolia. 
The relative sizes of the different trees may be calculated from the 
measure photographed on Plate Y. Obviously, the timber of most of 
the species here described may be obtained in various sizes, but those 
on the same plate are selected with a view to illustrating the relative 
sizes of mature trees of the respective species. 
Plate II. —Transverse sections of the timber of (7) D. sylvatica , 
(8) D. oppositifolia , and (9) D . Thwaitesii. 
Figure 8 shows the characteristic hollow decaying protoxylem area 
and the streaked nature of the remaining wood in D. oppositifolia. 
The rings of growth in D. sylvatica are perhaps clearer than in any 
other Diospyros species. 
Plate III. —Transverse sections of the timber of (10) D. attenuata 
(12) D. Toposia, (13) D. insignis , with characteristic bark, and 
(11) oblique section and log of D. acuta showing bark characteristic of 
most Diospyros species. 
Plate IV. —Transverse sections of (14) D. crumenata, (15) D. oocarpa , 
and (16) D. Ebenum. 
The section of D. oocarpa is unusually large and is used to show the 
large amount of streaked ebony of good quality which is frequently 
found in this species. 
