124 CONYOLVULACE^E. 



trip to the island. It was found twining with profusion of white flowers 

 on a large trunk of a species of (if I am not mistaken) Qmrcus. Another 

 specimen of the plant with fruits was collected by Mr. T. Doi in the central 

 part of the island. It is stated by BENTHAM that the species has a 1- 

 celled-ovary, while my plant has, as I have assured several times, distinctly 

 4-eelled-ovary, each cell having 1-ovule. The Formosan plant has much 

 longer panicles than that described by BENTHAM. The shape of the embryo 

 is very striking. The cotyledons are very irregularly lobed and plicated, bent 

 accumbently and touch closely to the very short radicle. The relative p< >-.[- 

 tion of the caudicle and radicle is also very peculiar. The former lies not 

 at the foot of, but on the side of the latter. It is, therefore, conceivable 

 that the embryo describes a semi-circle on itself, and brings the caudicle 

 from the foot of the radicle to the side of the latter. 



CllSCUta formosana HAYATA sp. nov. Planta volubilis aphylla, ramis 

 gracilibus, glabris, teretibus, 1 mm. in diametro sectionis, pauci-striatis, paucis- 

 sime lenticellis elevatis notatis. Flores spicato-glomerati, spicis sessilibus 1.] cm. 

 1 >ngis 5-6-floratis, rhachibus teretibus crassiusculis 1 mm. in sectione. Flores 

 sub-sessiles, 1-bracteati, bracteis oblongis obtusis valde concavis, 1} mm. 

 longis, pedicellis brevissimis, crassis, 1 mm. longis. Sepala 5 basi plus minus 

 c Hiuata, ovata apice rotundata, basi latissima noil contracta, 2 mm. longa, 

 basi 1| mm. lata, glabra, valde concava, imbricata. Corolla tubulosa, cum 

 lobis 7 mm. longa, tubo cylindrico, utrinque glabro 6 mm. longo, 5-nervato, 

 fauce ]>lus minus coiitracto, lobis 5 glabris patentibus reflexis, triangularibus, 1- 

 l mm. longis, totiusque iatis, apice obtusis margine minute obscureque 

 denticulatis. 8(|nam;e intra corollam 5, staminibus oppe^sitee, tubi corollse 

 dimidium tequantes, basi tulii dorso centre deorsum affix?\?, margine liberse, 

 spathulatre 3 mm. loiigie, i mm. latse, apice rotundata^ margine sursum multxi- 

 deorsum pauce-glanduloso-fimbriatse. Stamiija 5, fauce tubi (vel ad apicem 

 tubi) inserta, sessilia, cum lobis corolhe alterna, antheris ovatis apice emar- 

 ginatis, l;asi lobatis, I] - 1] mm. longis, | mm. Iatis, connectivis dorso elevatis, 

 oblongis, antlier< dimidium fequantibus. Ovarium globosum 1| mm. longum, 

 apice ad stylum abeuns, 2-loculare, loculis 2-ovulatis, ovulis subglobosis e basi 

 axis asceiidentibus, auata-opis, raphi dorsali, stylo 2? { mm. longo, columnar! , 



