RUBIACEE. 113 
Fl. Hongk. p. 137) but differs from them by the longer stamens and fewer- 
flowered-umbels ; also near to G. dentigera HAnws (Dmrs 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. t is, therefore, 
diffieult to know one from another only by descriptions, 
Rubiaceaze. 
Litosanthes gracilis HavaTA sp. nov. Frutex gracilis 1-2 m. alta, ramis 
et ramulis gracilibus, hirsutis, ramulis divaricatis oppositis patentibus, teretibus, 
rectis. — Folia opposita, obovata 15 mm.longa 5 mm.lata, apice acuta vel 
euspidato-aeuta, basi aeuta vel euneata obliqua, supra glabra, subtus ad 
costas et marginem strigosa, supra costis et venis planis subtus elevatis, 
venis primariis lateralibus utroque 6-7, simplicibus plus minus areuatis ad 
marginem attingentibus, venulis secundariis a costa angulo 90? patentibus, 
petiolis 14 mm.longis strigosis. Flores axillares solitarii, longe  pedicellati, 
pedicellis eracillibus patentissimis, angulo 90? divarieatis, folium in lonegi- 
tudine superantibus, hirsutis, 11 em.longis, apice pedicellorum 1-floratis vel 
2-floratis, basi calycis 1— vel 2—bracteatis, bracteis acuminato-triangularibus 
hirsutis. Calyx obconieo-campanulatus, 2 mm.longus, extus hirsutus, limbo 
4-dentato, intus elabro, dentibus aeutis, triangularibus margine ciliolatis intus 
slabris. Coroll:e tubus urceolatus, extus glaber ad faucem intus longe barbatus 
21mm.longus totiusque latus, limbo 4-dentato, dentibus patentibus reflexis 
ovato-triangularibus 2 mm. longis, apice apiculato-acutis, basi latioribus 13 mm. 
latis, extus elabris, intus breve hirsutis. Stamina 4, infra faucem corollse 
affixa, fillumentis brevibus, antheris oblongis utrinque emarginatis, dorsifixis, 
imm.longis. Ovarium inferius, 4-loculare, loculis 1-ovulatis, discus earnosus, 
stylus eolummnaris, apice breve 4-lobus, lobis erectis, ovulis erectis anatropis. 
Fruetus baceatus, globosus 3-4 mm. in diametro, nigricans, 4-lobus, 4—pyrenus. 
Har. Kusukusu, leg. B. HayarA et S. Sasaxr Juli. 1912 ; Botanrosha, 
leg. G. NAKAHARA. 
Near L. biflora Br. specimens of which I have never been able to eompare 
with this plant. "The description given in * DC. Prodr. IV. p. 465" is not 
