— 66 — 



There is in this respect a gi-eat resemblance with numerous re- 

 presentatives of Japanese flora. 



§ 6, on the only knownendemic species. 



I am very much astonished at the fact that B. nipp о ni cum 

 was not as it seems recognised by the Japanese florists in their native - 

 country. I think it useful to give its full characteristics because it 

 is of great interest, as being the only endemic species of this ge- 

 nus in Japan. 



Radix tenuis brevis obliqua; caudex intermedius brevis hand 

 incrassatus reliquiis foliorum mortuorum squamoideis laxe circum- 

 datus. Caul is solitarius gracilis elatus, c:a 40 — 60 cm. altus, teres 

 tenuissime striatus late fistulös us et pressione laevi facile applanabilis 

 inferne simplex superne tantum umbellis lateralibus 1 — 2 longepe- 

 dunculatis instructus. Folia radicalia perpauca lata lanceolata 

 vel oblonga petiole laminam subaequante vel breviore breviter acutata 

 apice saepe iterum obtusata, с : a 6 — 8 cm. longa с : a 7 — 10 mm., 

 lata, manifeste curvinervia nervis c:a 7 — 9; caulina [et inter- 

 nodia] plerumque 6 i n f i m a radicalibus similia sed saepius ma- 

 jora latius petiolata et petiole basi saepe auiiculato, media 

 e basi cordata plus minus oblonga parum supra basin dilatatani 

 angustissima supra medium latissima itaque plus minusve lyroidea 

 apice acutata vel obtusiuscula, nervis supra basin dilatatam in parte- 

 angusta approximatis ad apicem divergentibus, radicalibus manifeste 

 majora, с : a 7 — 10 cm. longa с : a 15 mm. supra med. lata,, 

 superiora e basi profunde amplexicauli cordatoovata mediis sub- 

 duplo minore longe acuminata acuta nervis numerosis, с : a 23, 

 tenuibus venulosis percursa, s u p r e m a minuta; folia omnia tenuia 

 nervis vix prominulis nervo marginal! nullo vel obsolete, ner- 

 vis primariis, venis numerosis imprimis axidromis irregulariter inter 

 se anastomosantibus instructis, ad apicem folii subinconspicue desi- 

 nentibus caomptodromis (nee dyctiodroinis). U m b e 1 1 a e inaequales; 

 centralis magna radiis 6 — 8 inaequalibus tenuissimis subcapillaribus 

 valde arcuatis divergentibus c:a 2,7 — 7 cm. longis; involucri 

 phylla 2,3 ovata vel suborbicularia obtusissima inaequalia pluriner- 

 via usque 10 mm. longa et 9 mm. lata; involucelli phylla 5 

 subaequalia late ovata obtusata [rare acutiuscula] mucronulata с : a 



