200 



EUPHORBIACE.E. 



glabra vel sparsissime pubescentia, costis venisque utraque tenuissime elevatis, costa 

 complanata, venis primariis lateralibus utroque latere costse 7-10 tenuissimis 

 prope marginem evanescentibus ad apicem serrarum haud attingentibus, petiolis 

 laminam ^-plo sequantibus apice glandulis minutis globuli-formibus 3-4 instruc- 

 tis basi leviter dilatatis 1-2 cm. longis, stipulis lanceolatis \\ mm. longis mm. 

 latis apice acutis vel obtusis basi latere singulo auriculatis glabris. Flores mo- 

 noecii. Recemi floris axillares ad axillas solitarii valde longiores 10-15 cm. 

 longi longe pedunculati, pedunculis brevioribus vel longioribus, floribus mascu- 

 linis et foemineis mixtis secus rhachin racemorum glomeratim dispositis, glomeris 

 3-5-floratis alternatim dispositis a se 1 cm. remotis, bractea sub glomeris singulis 

 una oblongo-triangulari 1mm. longa apice obtusa glabra. Fl. $ : subsessiles 

 vel brevissime pedicellati sub calyce artlculati. Sepala 3 sequalia ovato-oblonga 

 l|mm. longa 1mm. lata apice acuta basi leviter contracta tenuissima glabra. 

 Stamina circ. 10 ad centrum floris congesta, filamentis glabris crispatis longe 

 exsertis 2 mm. longis, antheris reniformibus, loculis late globosis divaricatissimis. 

 Fl. -9- breve pedicellati, pedicellis ^ mm. longis apice cum calyce articulatis. 

 Sepala ut fl. $. Staminodia 2 linearia complanata 1mm. longa ^mm. lata gla- 

 bra, antheris ad nullum reductis. Ovarium 2-loculare reniforme 1 rnm. latuin 

 J mm. longum glabrum sublseve fusco-rubescens, stigmate sessili 2-partito, par- 

 tibus patentissimis liberis ovario haud contactis fusco-rubescentibus lanceolatis 

 ^ mm. longis apice acuminatis ; ovulis in loculo singulo solitariis. Capsula 

 2-cocca, coccis 3 mm. longis viridibus facie laevibus haud rugulosis ; semina 

 subglobosa 2 mm. in diametro, testa rubescens tenuissime impresso-punctata. 



Mercurialis leiocarpa HAYATA Fl. Mont. Formos. p. 194 (non SIEB. et Zucc). 



HAB. Mt. Arisan, Tozan, ad 8000 ped. alt., Aprili. 1912, leg. B. HAYATA. 



Very near Mercurialis leiocarpa SIEB. et Zucc., but differs from it in 

 having the less verrucose ovary with the much spreading stigmata and the less 

 verrucose or nearly smooth capsules. The distinction of this plant from M. leio- 

 carpa is even more clear in the living specimens. The leaves of the new 

 species are pale green and of ordinary luster, while those of the Japanese are 

 deep green, shining and almost opalescent. The former has the ovate lanceolate 

 leaves which are usually obtuse at the base, while the latter has the ovate 

 oblong ones which are usually rounded at the base. 



