xov.. 1919.1 NOTVLJE AD PLANTAS JAPONIJE ET KOREJE XXI 197 



ita 2-5 mm. longus. Coni squamae 4 pares, primarii squaraosi. late 

 ovati recurvi v. late clliptici usque 4 mm. longi, secundarii ovati vel 

 rotundato-ovati J)-7 mm. lougi, tertii anguste obovati apice leviter 

 recurvi, quartani lineares v. oblanceolati apice crassi. Coni ut toti 

 ovoidei v. oblongo-ovoidei rubesccnti-fusci subglaucesccntes, 

 Nom. Jap. Nioi-nezuko. 

 Hab. _ 



Corca : in montibus Rorinsan versus australem usque Kongosaii, 

 in monte Kongosan (Seiroku Honda, Tomijiro Uciiiyama, Takenoshin 

 Nakai n. 5080-5084). Koseimen (Takknoshin Nakai n. 1884). in 

 monte Waigalbon (Takenoshin Nakai). Districtu Samsu (V. Koma- 

 Rov n. 85). in monte Trunbon (Masatomi FuRU\tj). 



Hacc Thuja est in Corca endemica et solum secus montes mediani 

 continui continent Gokasan 2000 m., Trunbon 2000 m., Kisaiho 2100 m., 

 Roho 2260 m., Rorinsan 2300 m. usque ad Kongosan 1600 m., sed 

 copiosissime crescit. Boreale extremum incipit e districtu Samsu et 

 terminat in extremo australe Kongosan. Virgultum densissimum facit 

 ut nemo perraeare possit, crescitque perinde infcriore quam Pinus 

 pumila, turn per utrgeque interjectionem sensim virgidtum posterioris 

 transit. Folia fricta odorem Thujas occidentalis agunt. 



454) Tsuga Sieboldii, Carriere Traite Conif. (1855) p. 186. 



Nom. Jap. Tsuga. 



Hab. 

 In insula Ooryongto v. Dagelet Island, in montibus copiosa. (Takeno- 

 shin Nakai n. 4110, TsuTOMtJ Ishidoya n. 3). 



Arbor magna in hac insula maxima truncus diametro 4 pedalis 

 attingit. Olim mult a- fuisse dicitur. Nunc tamen in silvis montium 

 Koriken non rara. 



455) Populus jesoensis, Nakai sp. nov. (Sect. Leuce). 



Arbor circ. 7 metralis ramosus. Truncus teres. Cortex sordide 

 fusco-cinerascentes. Gemma; ovata; reginoso-viscidge. Petioli 20—65 mm. 

 longi apice laterali compressi virides basi incrassati. Lamina glaber- 

 rima late ovata vel subdeltoidea apice acuta v. acuminata basi truncata, 

 minora late cuneata et non glandulifera 37-90 mm. longa 32-78 mm. 

 lata margine obtuse crenulato- v. incurvato-serrata supra viridissima 

 lucida stomatibus destituta, infra viridia. Amentam non vidi. 

 Nom. Jap. Ezo-yamanarashi. 

 Hab. 



Yeso : Prov. Teshio : in silvis Karai-nayoro (Takenoshin Nakai). 

 Prov. Kitami : Abashiri (S. Sugiyama). 



This Populus is an allied species of Popuhis Sicholdii, from which 



