16 RUTACE.E. 



Near Citrus Limonia OSBECK, but distinguishable from it in the more 

 rounded fruits with sweet pulp. 



Citrus depressa HAYATA sp. uov. Frutex, ramulis viridissimis complanato- 

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

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

 apice leviter acuminata ad summum late obtusa ad centrum retusa basi late 

 triangulari-obtusa margine subintegra leviter crenulata, petiolis 8 mm. longis 

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

 mis) 23 mm. longus 4 cm. latus rotundatus in circumscriptione vel inter- 

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

 ]>ericarpio tenuissimo 1 mm. crasso luteo-flavescenti sublsevi, carnibus acidis. 

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

 embryonibus pallido -viridescentibus. 



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-lanceolata apice obtusa ad summum plus minus 

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

 liaud vel vix alatis. Flores in alabastro extus purpurascentes obovoideo- 

 clavati, pedunculis 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 coucava. Stamina basi leviter connata fere libera, 

 ina3qualia, longiora 12 mm. longa, breviora 8 mm. longa. Ovarium viride 

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

 disco cupuliformi 2^ mm. in diametro. Fructus axillaris, pedunculis 5-6 mm. 

 longis, globosus 3J-4| cm. latus totiusque longus apice breve apiculatus, loculis 

 6-9, medulla tenui solida vel in mature cava, carnibus acidis, pericarpio 



