16 RUTACE.^. 



Near Citrus Limonia Osbkck, but distinguisliahlc^ fioin it in tlic more 

 roimded fruits with .sweet pul]>. 



Citrus depressa Hayata s]». nov. Frutcx, ramulis viridissimis com])lanato- 

 triquetris ad angulos obtusis flcxuosis, interdum spinis 1-1 ^ cm. longis ad 

 axillas foliorum instructis. Folia ovato-oblonga 8-9 cm. longa 3^-4 cm. lata 

 apice levitcr acuminata ad sumnnuu late oLtusa ad ccntrum retusa basi late 

 triangulari-obtusa margine subintegra leviter crenulata; i^etiolis 8 rnm. longis 

 angustissime alatis. Fructus depresso-globosus terminalis (pedunculis brevissi- 

 mis) 23 mm. longus 4i cm. latus rotundatus in circumscrij)tione vel inter- 

 dum tenuiter lobulatus apice profunde basi tenuiter impressus, loculis 7-9, 

 pericarpio tenuissimo 1 mm. crasso luteo-flavescenti sublasvi, carnibus acidis. 

 Semina ovoidea 1 cm. longa 6 mm. lata apice acuta rostrata ad summum obtusa, 

 embryonibus j)allido - viridescenti Ijus. 



Hab. Gaogan, sponte crescens. 



NoM. Jap. Hirami-Lemon. 



Resembles Citrus limonelloides Hay., but differs from it in the very much 

 depressed and smaller fruits. 



Citrus limonelloides Hayata sp. nov. Frutex 2-3 m. altus, ramis ascen- 

 dentibus, ramulis viridibus ad axillas foliorum spinis 3-4 mm. longis instructis. 

 Folia lanceolata vel oblongo-lanccolata a]3ice obtusa ad summum plus minus 

 retusa basi obtusa margine minute obscureque crenulata, petiolis 1 cm. longis 

 liaud vel vix alatis. Flores in alabastro extus j)urpurascentes obovoideo- 

 clavati, i:)edunculis 4 mm. longis ; flores apertientes 2 cm. longi extus 

 leviter purpurascentes intus albicantes. Calyx cupuliformis 2 mm. longus 4 

 mm. latus margine leviter 5-dentatus, dentibus brevissimis latissimis acutis 

 pallido-flavescentibus. Petala 5 oblanceolata 18 mm. longa 6 mm. lata extus 

 medio purpurascentia intus albicantia apice triangulari-acuta basi attenuata 

 ad basin 2 mm. lata intus concava. Stamina basi leviter connata fere libera, 

 ina^qualia, longiora 12 mm. longa, breviora 8 mm. longa. Ovarium viride 

 ovoideum 2J mm. longum, stylo columnari 7 mm. longo, stigmate clavato flavo ; 

 disco cupidiformi 2| mm. in diametro. Fructus axillaris, ])e(lunculis 5-6 mm. 

 longis, globosus 3J-4J cm. latus totiusque longus apice breve a])iculatus, loculis 

 6-9, medulla tenui solida vel in maturo cava, carnibus acidis, i^ericarpio 



