1644 
Agriculture, through Mr. J. P. Rock, agricultural ex- 
plorer. "'Thong Dee pummelo.' Dr. Yai considers this 
the best pummelo of Siam: it is somewhat acid, and so 
is better liked than the Nakorn Chaisri which is very- 
sweet; it is a splendid shipper and has quite the aro- 
ma of the Nakorn Chaisri. The Thong Dee pummelo does 
not lose its flavor when planted elsewhere; it often 
produces seeds but is also seedless at times." 
Clematis tangutiea obtusiuseula (Ranunculaceae ) , 52337. 
Clematis. From Cambridge, England. Seeds presented by 
Mr. F. G. Preston, Botanic Garden. A glaucous-green 
climbing shrub, native to central Asia, with long- 
petioled, pinnatisect leaves, 3 to 5 inches long, con- 
sisting of lanceolate, coarsely serrate segments up to 
2% inches long, often lobed in one or both sides. The 
nodding solitary flowers are very large, on erect pe- 
duncles 6 inches long and arched at the tip. The 
ovate-lanceolate, golden-yellow sepals, 2 inches long, 
are strongly 3-ribbed, glabrous within, the, margins 
tomentose, and with recurved tips. [ Adapted from 
Curtis 's Botanical Magazine, pi. 7710.) 
Davidsonia pruriens ( Cunoniaceae ) , 52352. Prom Bur- 
ringbar, New South Wales. Seeds presented by Mr. B. 
Harrison. "A palmlike tree with large, long-lobed 
leaves at the top. The pear-shaped, purple plums are 
borne on the trunks and even on the roots of the tree 
if these are exposed above the surface of the ground. 
The fruit juice makes a good drink for summertime, 
and could also be used for coloring liquids, etc." 
(Harrison. ) 
Elaeoearpus siamensis (Elaeocarpaceae) , 52437. Prom 
Bangkok, Siam. Seeds collected by Mr. J. P. Rock, ag- 
ricultural explorer. "A fine ornamental foliage tree, 
producing seeds in great abundance. The seeds are 
used as a narcotic by the Lao. The tree will grow well 
in Florida. " (Rock. ) 
A tree about 9 m. high, with densely puberulent 
young branches and reddish bark. The lanceolate papery 
leaves are 7 to 14 cm. long, and 2.6 to 6 cm. wide. 
The white flowers are in racemes, and have tie petals, 
5 mm. long and 4 mm. wide, fringed almost to the mid- 
dle. The tree is found in an evergreen jungle at 
Chiengmai on Dai Sootep at an altitude of 660 m. Lao 
name "Mai Moon." (Adapted from Kew Bulletin of Miscel- 
laneous Information, 1911, p. 23.) 
