CONVOLVULACE^E. 33 



contractis 1^ mm. in diametro gkbris. Disci 5 ad basin loborum corollse 

 affixi flavi pulviniformes mm. lati \ mm. longi orem tubi fere obtegentes. 

 Stamina 5, filamentis filiformibus brevissimis j mm. longis, antheris oblongis 

 |- mm. longis. Ovarium obconicum apice truncatum mm. longuin glabrum, 

 stylo columniformi f mm. longo, stigmatc globoso-peltiformi hand lobato ; 

 ovarium 4-5-partitum. Nuculse 4-5 tetrahedri-formes circ. 1 mm. longse 

 nitido-nigrse laeves ad angulos acutse. 



HAB. Giran: Soseikyaku, leg. B. HAYATA, Mai. 11, 1916. 



Remarkable for the leaves with costa impressed above but elevated below, 

 and veins elevated above but impressed below. 



Convolvulacese. 

 Parasitipomcea HAYATA n. g. 



Parasitipomsea formosana HAYATA sp. nov. Parasitica aphylla ; caulis 

 tereto-filiforrnis circ. 1 m. longus 2-2 mm. in diametro. Flores cymose 2-3- 

 congesti, cymis longe pedunculatis, peduiiculis 10cm. longis tereto-filiformibus 

 lateraliter sitis, pedicellis |-1 cm. longis basi bracteis instructis, bracteis linea- 

 ribus 2 cm. longis 2 mm. latis apice acumiiiatis glabris vel multo niinoribus. 

 Calyx 5-partitus, partibus valde iiisequalibus 3-exterioribus latioribus oblongo- 

 linearibus 2| cm. longis 7 mm. latis apice acuminatissimis iiitegris extus tonuiter 

 hirsutis intus glabris, 2-interioribus aiigustissime linearibus 2mm. latis 

 apice acuminatissimis. Corolla iiiftmdibuliformis, tubo 4cm. longo, limbo 

 5-lobato. Stamina 5, fikmentis basi corollse ad 5 mm. altitudiiiem affixis basi 

 dense barbatis caeterum glabris filiformibus circ. 2 cm. longis, antheris lineari- 

 bus 3 mm. longis f mm. latis apice obtusis basi profunde 2-lobatis, lobis circ. 

 1 mm. longis \ mm. latis obtusis. Discus circum ovarium situs aimuliforniis 

 \ mm. altus. Ovarium ovoidcum 1^ mm. longum glabrum 3-locularc, loculis 

 2-ovuliferis, stylo filiformi ereato recto 3 cm. longo, stigmate terminali 

 2-partito, partibus globosis sessilibus se contactis minute kmelkto-botryoideis. 

 Fructus ignotus. 



HAB. Ako : Tanashu, leg. G. NAKAHAEA, Jan. 1907. 



Flowers are nearly the same as those of Ipomcea. But, its parasitic and 

 leafless habit is so remarkable that it is sufficient to establish a new genus for it. 



