378 NEW PLANTS FROM SOUTHEUN CHINA. 
m 
previously published, from those recorded in the present note, and from 
others not yet made known, may be briefly summed up as follows : 
1. In a sample of wheat the translucent grains contain much more 
nitrogen than the opaque, but the same percentage of water. 
2. The translucent grains are denser than the opaque. 
3- A larger proportion of the opaque than of the translucent grains 
germinates and fruits- 
4. The yield of dressed corn is greater from the denser seeds, and 
tliis dressed corn, from the greater perfection of its grains, is itself 
denser. 
DESCRIPTIONS OF FOUR NEW PLANTS FROM 
SOUTHERN CHINA. 
By Henry F. Hance, Pu,D., etc. etc. 
1- Nasturtium (Brackylohos) Cantoniense, n. sp. ; caule erecto ro- 
busto 1-2-pedali plus minus hispido canaliculato, foliis sessilibus basi 
auriculis rotundis semi-amplexantibus oblongis hispidis insequaliter 
grosse dentatis, racemis numerosis paniculatis multifloris fructiferis 
elougatis, petalis flavis calycem subsequantibus, siliquis vix linea longi- 
oribus subglobosis turgidis stylo distincto lis 3-plo breviore apiculatis, 
pedicellis patentibus vel arcuato-defiexis 3-4-plo brevioribus^ seminibus 
cinnamomeis tcnuiter rugosis. 
Two specimens only of this wei"e gathered by me, in December 1859, 
from the margin of a pond in the envirous of Canton ; the plant was 
not again met with until June 1865, when Mr. Sampson found it 
growing plentifully on flat muddy banks of the West River, in the 
province of Kwangtung, in places subject to occasional summer over- 
flows. Its nearest ally is N, Mspidum, De Cand., from which it differs 
its nearly entire leaves, subglobose fruit, and much longer pedicels. 
The seeds of the Chinese plant, examined side by side with those 
of the American, under a simple microscope, differ conspicuously, being 
not much more than half the size, much deeper in colour, and with a 
rur/uJose, not alveolate testa. Those who, with Professor A. Gray 
(Man. Bot. N. U. S. ed. 2. p. 30) and Dr. Kegel (Eadde, Eeisen in 
Ost-Sibir., Bot. Abtheil. Bd. 1. p. 152), unite N. hispidnm with N. 
terrestre, E. Br., would naturally do the same with the present plant. 
2, fff/pericum (Euhypericinn, Drosocarpmm) Sampsoni, n. sp. 
