CONVOLVULACE.'E. 33 



contraetis l^-inni. in diamctro glabris. Disci 5 ad basin loboriim corolUe 

 affixi flavi pulvinifornies |- mm. lati % mm. longi orcm tubi fere obtegentes. 

 Stamina 5, filameiitis filiformibus brevissimis |- mm. longis, antlieris oblongis 

 ^-|- mm. longis. Ovarium obcoiiicnm apiee truncatum |- mm. longum glabrum 

 stylo colnmniformi | mm. loiigo, stigmate globoso-peltiformi hand lobato 

 ovarium 4-5-partitnm. Nuculse 4-5 tetrahcdri-formes cire. 1 mm. longse 

 nitido-nigne heves ad angulos acutse. 



HAB. Giran: Soseikyaku, leg. B. HAY ATA, Mai. 11, 1910. 



Remarkable for the leaves with costa impressed above but elevated below 

 and veins elevated above but impressed below. 



Convolvulaceae. 

 Parasitipomcea HAYATA n. g. 



Parasitipomaea formosana HAYATA sp. nov. Parasitica aphylla ; caulis 

 tereto-filiformis circ. 1 m. longus 2-2 -|- mm. in diamctro. Flores cymose 2-3- 

 congesti, cymis longc pedunculatis, pedunculis 10 cm. longis tereto-filiformibus 

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

 ribus 2 cm. longis 2 mm. latis apice acnminatis glabris vcl iiiulto minoribus. 

 Calyx 5-partitus, partibus valdc irisequalibus 3-exterioribus latioribus oblono-o- 

 linearibus 2| cm. longis 7 mm. latis apice acnminatissiniis integris cxtns tenniter 

 hirsutis intns glabris, 2 interioribus angustissime lincaribus 2 mm. latis 

 apice acuminatissimis. Corolla inftmdibnliformis, tnbo 4 cm. longo, limbo 

 5-lobato. Stamina 5 ; nlameiitis basi corollre ad 5 mm. altitudincm affix is basi 

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

 bus 3|- mm. longis | mm. latis apice obtusis basi profnnde 2-lobatis, lobis circ. 

 1 mm. longis | mm. latis obtusis. Discus circum ovarium situs annuliformis 

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

 2-ovnlifcris, stylo filiformi ercato recto 3 cm. longo, stigmate terminal! 

 2-partito, partibus globosis scssilibus se contactis minute lamellato-botryoideis. 

 Fructus ignotus. 



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



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

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



