HYDROCH ARITACES. 171 
further particulars regarding these two Himalayan pines see 
‘Gamble’s ‘‘ Manual of Indian Timbers’”’ and Brandis’ ‘ Forest 
Flora of N.-W. and Central India.”’ 
The following non-indigenous conifers are met with in gardens 
within the area of the Upper Gangetic Plain :— 
‘Tuvuya orRrenTALIS, L.*-A small evergreen tree of China and Japan, 
and sometimes known as the Chinese Arbor-Vite. 
‘CUPRESSUS SEMPERVIRENS, L.—A tall evergreen tree, indigenous in 
Persia, Syria and Asia Minor.—Cypress. Vern.—Sarés (Hind.) 
Largely cultivated in the plains of N.-W. India, especially the fas- 
tigiate variety. 
JUNIPERUS MACROPODA, Boiss.—Himalayan Pencil Cedar. <A small 
or medium sized tree of the inner dry ranges of the Western Himala- 
ya, ascending to 14,000 ft. in Ladak, and found as low down as 
5,000 ft. om the Indus. It has been cultivated in the Saharanpur 
Garden, where it appears to thrive.—Vern. Dhup. 
ARAvCcARIA CUNNINGHAMIL Ait.—A tall handsome evergreen tree, 
introduced from Queensland. There used te be a fine specimen of 
this tree in the Saharanpur Garden. 
AravcaRiIaA Bipwittr, Hook.—The Bunya-Bunya pine of N.-E. 
Australia. This tree also thrives at Saharanpur and in other 
gardens of North-West India. 
Belonging to the allied and remarkable family of Cycadacee some 
mention should be made of Cycas revoluta, Thunb., a Japanese 
species introduced into India, and often grown in gardens within 
the area of the Upper Gangetic Plain. It is a small palm-like 
evergreen tree with linear pinnately divided leaves arranged in 
terminal crowns. 
CLASS III. 
MONOCOTYLEDONS. 
CVI.—HYDROCHARITACEZ. 
Aquatic usually submerged herbs. Leaves undivided, usually 
narrow and ribbon-like, rarely with a distinct lamma. Flowers 
regular, moncecious or dicecious, rarely 2 sexual, enclosed in an 
