205 
Wall. The other bears the number Pierre 1663, but has quite 
different leaves from those of Hoang Nan, and its leafy in- 
florescences are like those of S. Nuz-vomica (see Dop in Lecomte, 
Flor. Gén. Ind.-Chin. iv. Pl. iii. Figs. B and 1-5). This it has 
been necessary to describe as a new species with the name S. 
Pierriana, A. W. Hill (see p. 197). 
The confusion between these two distinct species bearing the 
number 1663 was the more difficult to bale since Pierre him- 
self considered then to be the same plant and there is a M 
description of the flowering specimen drawn up in the 
pate j ramclbaey which I have used with vor} little alteration 
for S. Pierr 
Both S. Se See and S, Pierriana, » appears, are found in 
the calcareous mountains of N. Annam, not far from the locality 
of the doubtful species S. Spireana (see p. 199), 
S. Gautheriana shows considerable resemblance to some in- 
complete specimens collected in the Khasia Hills (also a limestone 
range) whic ve been referred to S$, aenea, var. acuminata, A. 
. Hill, and it also appears to be allied to 5. Vanprukii, Craib, 
from Siam, S. aenea, A. W. Hill, from Travancore, and to S. 
quadrangularis, A. W. Hill. A further point of interest in ge 
connection is that S. Pierriana, which has been collected and con- 
fused with S. Gautheriana, appears to be closely allied to S, 
cinnamomifolia, var. Wightii, which occurs in the Khasia Hills 
Wi aenea, var. acuminata and in S. India grows in the same 
places as S. aenea (see p- 188). : 
‘he economic properties of Hoang Nan are thoroughly dis- 
cussed by Lesserteur. De Lanessan* also states that its bark is 
of a reddish-ochre colour, containing Strychine and Brucine, and 
is used for leprosy and skin diseases. Shoemakert too directs 
attention to the use of Hoang Nan in skin diseases, but cannot 
concur in all the eulogies that have been bestowed on ‘this bark. 
81. §. quadrangularis, 4. W. Hill; species ramis 
rangularibus angulis carinatis foliis spealcitk grandis distincta. 
Frutex scandens, 15-22 m. longus, robustus; caules 5-6°5 cm. 
diametro; rami et ramuli glabri, fortiter quadrangulares, 
angulis carinatis. Folia 13-20 cm. longa, 5°5-11 em. tats ellip- 
* Les Plantes Utiles des Colonies Frangais, Flor. Cochin. 1886, p. 5. 767. 
Jon Fe are, Medical Bulletin, November, 1889, p. 348; see also Pharm, 
urn. 3. xx. 1889, p. 425. 
