236 17 ie Philippine Journal of Science 1915 
groups, and certainly merits general recognition as a valid 
genus. The name was taken from Unona dasymaschala Blume 
FI. Jav. Anon. 55, t. 27, although the first species cited under 
the section was the allied Unona longiflora Roxb. It should 
be noted that Blume’s figure is not correct in presenting the 
flowers with separate petals. In Dasymaschalon the petals, 3 
in number, never 6, are firmly united by their broad margins, 
never separate, and the corolla falls as a whole. Boerlage, 0 who 
treats the group merely as a section of Unona, has separated 
it from the sections Desmos and Stenopetalum of Unoyia which 
he places in his series Unonees, and rather illogically places 
Dasymaschalon, still as a section of Unona, under the series 
Melodorees. While Boerlage is probably correct in placing 
Dasymaschalon in the alliance with Melodorum, the genus Unona 
certainly cannot logically be considered as partly in one tribe 
and partly in another, under the same generic name, as Boerlage 
proposed to do. 
Dasymaschalon was retained merely as a section of Unona 
until 1901, when Torre & Harms raised it to generic rank. In 
this they have been followed by Finet & Gagnepain, 6 7 who follow 
Boerlage in considering Dasymaschalon in the alliance with 
Melodorum rather than with Unona auct., non Linn. f. ( =Des - 
mos Lour.). I believe that Boerlage is correct in placing it in 
the tribe Melodorieae (including Xylopieae) rather than retain- 
ing it in the tribe Unoneae with the two other sections of the 
genus Unona (=Desmos ) . 
As originally delimited the genus included those species of 
Unona that present but three petals, and these quite united by 
their broad margins and falling as a whole, the carpels with 
several ovules, and the fruits moniliform. Its limits should be 
extended to include several Philippine forms having the prom- 
inent perianth characters of Dasymaschalon but with carpels 
having but 1 or 2 ovules, and the fruits ovoid to ellipsoid, not 
at all moniliform. One species is common and very widely 
distributed in the Philippines, having originally been placed in 
Unona, but later transferred to Polyalthia on the basis of the 
number of ovules; yet no species of Polyalthia presents the pe- 
culiar petal characters of this plant, which does occasionally 
present carpels with 2 ovules, and fruits with 2 seeds. The 
genus includes the following known species: 
6 Ic. Bogor. 1 (1899) 84, 87, 98, 126. 
! Bull. Soc. Bot. France 53 (1906) Mem. 4: 143; Lecomte FI. Gen. Indo- 
Chine 1 (1907) 104. 
