72 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
Deutzia sp. (F 109). — Abounds about Mo-Ping, where all the 
coppiced slopes are a surf of snow at the end of May. It extends, 
too, up into the gorges of Thundercrown, and is a slight, graceful 
bush of 4-6 feet, bent down beneath its burden of large and 
brilliantly pure-white flowers. 
Dianthus. — This race is very ill-represented in the Tibetan Alps. 
D. squarrosus, or a species closely akin to it (F 389), abounds 
in the upper grass-lands, while on Lotus Mountain, low down, 
occurs a small red-flowered cluster-head (F 352). Neither is 
yet worth distributing. 
Dicranostigma Franchetianum (F 1) is a Great Celandine, abounding 
on precipitous field-banks and walls of the loess right away from 
Honan to the Tibetan border. It makes a very handsome basal 
rosette of richly glaucous-lobed foliage, like a blue Ceterach, from 
which arises a profusion of stems in April, showering forth golden- 
yellow poppies over a long period, in sprays of some 8-12 inches 
high [but not of any trustworthy permanence]. 
Diospyros sp. (F 425). — Not distributed; the lesser Persimmon-— a 
graceful voluminous tree, like a gigantic Bay, beset with innu- 
merable little fruits of a warm umber, like stewed Mirabelles. 
Dipelta floribunda (F 18). — This very lovely and graceful shrub 
begins to occur some two to three days south of Shi-ho, and 
thence abounds magnificently westward in all the lower alpine 
coppice of the Chago-ling extremity of the range, not extend- 
ing further into the main mass of the chain about Satanee, 
and dying finally away northward on the Mo-Ping slope of the 
Gahoba Pass between the two great alpine chains. It is usually 
a low bush, but on the slopes below Chago-ling develops into a 
small rounded tree of 12-14 feet ; the effect of that woodland 
wall, when every bough is bent beneath its burden of pearl- 
pale Diervillas, with laced lip of golden orange-filigree, is one not 
easily to be imagined, nor ever to be described. Dipelta (F 18) 
is in its zenith in mid-May ; a fact which makes me doubtful 
of identifying it with Potanin's D. elegans recorded from the 
Mo-Ping passes on June 27 — a date by which the earlier species 
should long have passed out of flower. This curious, capri- 
foliaceous family, so inordinately profuse in flower, has an 
ineradicable parsimony about seeding. Purdom, in the autumn, 
returned at great peril and in disguise into the Chago district 
and there got a large sackful of seed ; that large sackful 
yielded some fifty-six sound germs alone. So that no one must 
wonder if the distribution of this beauty has been but scanty. 
(It should strike well from cuttings from half-ripened wood 
about August.) 
Dipelta elegans (F 157) is yet worse. Of this I got two large sackfuls, 
yet, having husked so many seeds and found them all bad, I 
hardly dare distribute the rest, for fear there may not prove a 
single sound kernel in the lot. It is a taller grower than the 
last, larger and pinker in the flower, much larger in the chaffy 
