322 SPECIES BLANCOANAE 
which is possibly a synonym of Calonictyon aculeatum (Linn.) 
House, although Hallier f. [Bull. Herb. Boiss. 5 (1897) 1044] 
retains the species as Calonictyon muricatum (Linn.) Don for 
the particular form to which Blanco’s description of Convol- 
vulus colubrinus applies. Convolvulus colubrinus Blanco is oc- 
casionally found in cultivation in the Philippines, being locally 
known as tonquing. The flowers are somewhat purplish and 
much smaller than in Calonictyon aculeatum House and C. album 
House, 5 to 6 cm long, the limb about 5 cm in diameter. 
QUAMOCLIT Tournefort 
ae Ipomoea quamoclit Linn.; Blanco Fl. Filip. (1837) 97; ed. 2 (1845) 72; 
ed. 3, 1 (1877) 134, t. 83=QUAMOCLIT PENNATA (Descr.) Voigt 
(Quamoclit vulgaris Choisy). 
This species was introduced from Mexico at an early date 
by the Spaniards and is now widely distributed in the settled 
areas of the Philippines at low and medium altitudes. It is 
thoroughly naturalized in many regions and is also commonly 
cultivated for ornamental purposes. 
Illustrative specimen from Obando, Bulacan Province, Luzon, 
October, 1914 (Merrill: Species Blancoanae No. 513). 
IPOMOEA Linnaeus 
Convulvulus nil Linn.; Blanco Fl. Filip, (1837) 92; ed. 2 (1845) 68; ed. 
3, 1 (1877) 128, t. 66=IPOMOEA NIL Roth. 
The Linnean species was correctly interpreted by Blanco. It 
is of rather wide distribution in the settled areas at low alti- 
tudes in the Philippines; introduced from tropical America. 
Illustrative specimen from Manila, Luzon, October, 1913 (Mer-° 
rill: Species Blancoanae No. 281). 
Convulvulus dentatus Blanco Fl. Filip. (1887) 89; ed. 2 (1845) 66; ed. 3, 
1 (1877) 123, t. 31 (as I. commutata R. & S.), non Vahl=IPOMOEA 
TRILOBA Linn. (J. blancoi Choisy). : . 
This species is common and widely distributed in the Phil- 
ippines at low and medium altitudes in the settled areas, having __ 
been introduced from Mexico through the intermediary of the — 
Acapulco-Manila galleons; it also occurs in Guam, Marianne 
Islands, which was a stopping place for all ships from Acapulco 
to Manila. Blanco’s description of Convolvulus dentatus is the 
whole basis for Ipomoea blancoi Choisy in DC. Prodr. 9 (1845) 
389, so that Choisy’s species is merely a synonym of Ipomoea 
triloba Linn. s 
Illustrative specimen from Antipolo, Rizal Province, Luzon, __ 
October, 1914 (Merrill: Species Blancoanae N03; $50) % o0 
