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PACIFIC SCIENCE, Vol. Ill, April, 1949 
3- or 4-verticillate, pointed at the apex, and 
have close lateral nerves; the left margins of the 
corolla lobes overlap, and the follicles are apo- 
carpous. At first sight, Tonduzia might suggest 
an anomalous species in § Dissurasp ermum, 
with contrariwise aestivation. This impression 
is particularly supported by its apparent seed 
character. The seeds of Tonduzia longifolia 
(A. DC.) Markgraf superficially resemble those 
of Alstonia constrict a, except that they are gla- 
brous on the sides. They are elliptic, about 10 
mm. long and 3 mm. broad, somewhat erose 
at one end, and with a short (about 2 mm. 
long) bifurcate tail at the other end. These 
seeds appear ciliate along the margins in the 
manner of § Dissurasp ermum. But when 
examined closely the seeds of Tonduzia are 
found to be not at all ciliate with simple dis- 
tinct hairs as in Alstonia. Instead they are sur- 
rounded by a membranous border which is 
finely and repeatedly lacerate. Principally be- 
cause of this difference in the actual morphology 
of the seeds in the two genera, I judge it best 
to maintain Tonduzia separate from Alstonia. 
In proposing that Blaheropus A. DC be re- 
turned to generic status, in which category it 
was held by some of the older botanists, Pichon 
has selected the section of Alstonia most de- 
serving of such rank. I have already noted 
this in my comments under the synonymy of 
Alstonia, and my continuing to give Blaheropus 
sectional rather than generic rank is largely a 
matter of personal inclination. The differences 
between the sections Pala and Blaheropus are 
admittedly great, but are they of generic magni- 
tude? If considered so, what shall be the dis- 
position of Dissurasp ermum, a section which 
also presents great divergences from Pala? 
Winchia is also accepted as a genus by Pichon. 
There is little in favor of this. In fact, it might 
be argued with considerable reason that Win- 
chia be altogether submerged into the § Pala. 
Paladelpha Pichon was typified by Alstonia 
angustiloha, which is here placed in § Pala . The 
characters stressed by Pichon in segregating the 
new genus are the narrow anthers, 2 -pored com- 
pressed pollen, the ovary provided with some 
hairs, and the clavuncle slender, glabrous, with i 
spreading collar. I find the flowers of A. pneu- 
matophora hardly distinguishable from those : 
of A. angustiloha . The leaves of the former 
resemble closely those of A. spatulata. These : 
three species bear unmistakable affinity with i 
A. scholaris, the type of the § Pala. The : 
indumentum is often lacking (A. angustiloha : 
var. glahra) on the ovary of A. mgustiloha. 
Pichon proposes two series, Glabrae and I 
Pilosae, under § Pala. In the series Gla- 
brae, A. spatulata and A. sericea are cited as 
species studied, and A. pachycarpa as seen but 
without flowers. The last species belongs in 
§ Winchia, whereas A. sericea is most prob- 
ably a synonym of A. neriifolia in the § Bla- 
heropus. In the series Pilosae, Pichon cites as 
studied A. Gilletii, A. congensis, and A. scho- 
laris. The first species listed is A. congensis, 
and the second very likely A. Boonei. The two 
series are represented by primary subdivisions 
in my key to the species in § Pala. I do not be- 
lieve they merit formal names. 
Also, Pichon proposes two series under 
§ Dissurasp ermum. His series Occidentales 
corresponds largely to the § Monur asp ermum 
already presented in my original manu- 
script. A. constricta, which Pichon cites as one 
of the species studied for the series, more 
properly belongs in § Dissurasp ermum than in 
§ Monur asp ermum. Of the species noted as seen i 
but not studied in this series, A. grandifolia i 
belongs with Dyera costulata, and A. pneuma- 
tophora in § Pala. The series Orient ales is 
typical § Dissurasp ermum. 
Finally, Pichon (1947: 298) attributes to 
Guillaumin four Alstonia species, of which I 
have seen neither specimen nor description or 
any other reference. These are: A . Balansae, 
A. linearifolia, A. stenophylla, and A. undulata. 
These species do not appear under Alstonia in 
the Kew Index up to the 1940 Supplement. It 
is quite probable, however, that Pichon, in the 
