BULLETIN DE GÉOGRAPHIE BOTANIQUE 139 



Ericaulon novum japonicum 



par M. T. NAKAI. 



Eriocaulon (Nasmythia) (i) Yoshinoi Nakai sp. nov. 



Acaulis. Radix hbrosa. Folia rosulata 4-10 cm. longa, i,5- 

 2,5 mm. lata, 3-6 nervia, laevia. Pedunculi plures graciles 

 io-25 cm. longi, diametro, 5-8 mm. lati. Vaginae apice bifidae, 

 2,5-5 cm. longae, lobis 3-4 mm. longis, lanceolaio-acuminatis, 

 margine subhyalinis. Flores capitati. Involucri squamae exte- 

 riores longiores flores superantes, oblongo-lanceolatae v. ellip- 

 tico-lanceolatae subhyalinae virides 4 mm. longae, 2 mm. latae, 

 acutae; interiores ovato-lanceolatae 3 mm. longae, 2 mm. latae. 

 Flores ^ in série extima positi 3-5, bracteis ad k medium stipitis 

 fions positis, oblanceolatis 2 mm. longis hyalinis, apice subfus- 

 cescentibus et ciliolatis, cellulis latericulosis compositis. Sta- 

 mina 2, aliud solitarium, aliudque cum petalo uno minimo 

 cujus apice nigro-punctulato cilioiatoque connatum, sed apice 

 solutum. Illa stamina, tamen, inter sese asymetrice posita (2). 



Antherae nigrae biloculares. Filamenta lanceolato-acuminata. 

 Flores $ numerosi, bracteis oblanceolatis subhyalinis subfus- 

 cescentibus apice ciliolatis, sepalis 2 subuiatis, hyalinis, cellulis 

 latericulosis compositis, petalis 2, sepalis alternis subulato-lan- 

 ceolatis nigro-apiculatis intus supra médium longe barbatis et 



(1) Cf. Tokyo Bot. Mag. XXV. (lit. jap.), p. 217. 



(2j It is no wander to hâve such a construction when we imagine it as 

 follows : Three petals hâve extinguished and only one wich is opposite to 

 one of the stamens has escaped trom us extinction. Of the stamen, on the 

 other hand, two hâve extinguished, i. e. one opposite to the petal a ano- 

 ther next 10 it and alternate to the petal hâve remained. 



