KUBIACE^. 113 



Fl. Hongk. p. 137) but differs from them by the longer stamens a,nd fewer- 

 flowered-umbels ; also near to G. dentigera Harms (Diels Fl. Centr. Chin. p. 

 487) from which our plant can be distinguished by the quite entire leaves. 

 The three congeners above mentioned and the plant just described are very 

 like each other, and the difference, if any, is the slightest. It is, therefore, 

 difiicult to know one from another only by descriptions. 



Rubiacese. 



. Litosanthes gracilis Hayata sp. nov. Frutex gracilis 1-2 m. alta, ramis 

 et ramulis gracilibus, hirsutis, ramulis divaricatis oppositis patentibus, teretibus, 

 rectis. FoHa opposita, obovata 15 mm. longa 5 mm. lata, apice acuta vel 

 cuspidato-acuta, basi acuta vel cuneata obliqua, supra glabra, subtus ad 

 costas et marginem strigosa, supra costis et venis planis subtus elevatis, 

 venis primariis lateraJibus utroque 6-7, simplicibus plus minus arcuatis ad 

 marginem attingentibus, venulis secundariis a costa angulo 90° patentibus, 

 petiolis 1-^ mm. longis strigosis. Flores axiUares solitarii, longe pedicellati, 

 pedicellis gracilHbus patentissimis, angulo 90° divaricatis, folium in longi- 

 tudine superantibus, hirsutis, 1^ cm. lougis, apice pedicellorum 1-floratis vel 

 2-floratis, basi calycis 1- vel 2-bracteatis, bracteis acuminato-triangularibus 

 hirsutis. Calyx obconico-campanulatus, 2 mm. longus, extus hirsutus, limbo 

 4-dentato, intus glabro, dentibus acutis, triangularibus margine ciliolatis intus 

 glabris. Corollfe tubus urceolatus, extus glaber ad faucem intus longe barbatus 

 2^ mm. longus totiusque latus, limbo 4-dentato, dentibus patentibus reflexis 

 ovato-triangularibus 2 mm. longis, apice apiculato-aoutis, basi latioribus 1\ mm. 

 latis, extus glabris, intus breve hirsutis. Stamina 4, infra faucem corollse 

 affixa, filamentis brevibus, antheris oblongis utrinque emarginatis, dorsifixis, 

 f mm. longis. Ovarium inferius, 4-loculare, loculis 1-ovulatis, discus carnosus, 

 stylus columnaris, apice breve 4-lobus, lobis erectis, ovulis erectis anatropis. 

 Fructus baccatus, globosus 3-4 mm. in diametro, nigricans, 4-lobus, 4-pyrenus. 



Hab. Kusukusu, leg. B. Hayata et S. Sasaki, Juli., 1912 ; Botanrosha, 

 leg. G. Nakahaba. 



Near L. Inflora Bl. specimens of which I have never been able to compare 

 with this plant. The description given in " DC. Prodr. IV. p. 465 " is not 



