501 DR. MAXWELL T. MASTERS ON 



P. Thun-bergti, Parlatore in DC. Prod. xvi. sect. post. p. 3SS 

 (1868) ; Engelmann, Revision, p. 22, adnot. n. 26. 



P. silvestris, Thurib. Fl. Jap. p. 27-1, non Linn. 



P. Pinaster, Loud. Arhoret. 2218 ; Gordon, Pinet. p. 176, ed. 1, 

 non Soland. 



P. rubra, Siebold in Verhand. vanhet Batav. Genootsch. vol. xii., 

 e.v Endlicher. 



P. Massoniana, Sieb. et Ziccc. Fl. Jap. ii. p. 21, t. 113, 111 ; 

 Endlicher ; Carriere ; Murray ; Henh. et Hochst., non Lambert. 



Per totam Japoniam, Oldham 561 ! ; in China, Maximowicz ! ; 

 Korea, Oldham ! 



This is included in Eugelmann's group 6. Ponderosae, to which 

 parenchymatous ducts are assigned. Cultivated specimens in 

 the Kew arboretum show this arrangement, and are, moreover, 

 remarkable for their large ovoid acuminate buds covered with 

 dense white silky hairs. 



P. p.vryifloka., Sieb. et Zucc. Fl. Jap. ii. p. 27, t. 115 (1842) ; 

 Endlicher ; Carriere ; Gordon ; Murray • Henk. et Hochst. ; 

 Parlatore in DC. Prod. xvi. 2, p. 401 ; Syme in Gard. Chron. 

 November 16, 1878, p. 624, fig. L03 ; Engelmann, Revision, p. 15, 

 adnot. 2. 



P. Cembra, Thunb. Fl. Jap. p. 274, non Linn. 



In Japonise provinciis borealibus in insulas Kurilas usque pro- 

 cedens ; in ins. Tesso, Maries ! : Oldham 518, 807 et 808 ! ; Sie- 

 bold ! ; Yokohama, Maximowicz ! ; in ins. Nutka ? 



Engelmann includes this in his sect. 1. Strobus, with ducts peri- 

 pheral, not surrounded by strengthening cells ; and my obser- 

 vation of the leaves of Siebold's type specimen agrees with that 

 of Engelmann. P. heterophylla, Presl in herb. Hsenke, is referred 

 to this 3pecies by Engelmann. If correctly so, the identification 

 is the more important as it extends the distribution of the specie3 

 to Nutka island. 



P. koraiensis, Sieb. et Zucc. Fl. Jap. ii. p. 28, t. 116 (1842) ; 

 Endlicher ; Carriere : Gordon ; Murray ; Henk. et Hochst. ; Koch : 

 Parlatore ; Engelmann, Revision, p. 16. 



P. Strobus, T/iunb. Fl. Jap. p. 275 (1784), nee Linn, 



In Koraia, in Kamtschatka et in insula Koraginsk teste Siebold; 

 in montibus Fakoniae. Colitur in Japonia, Tschonoshi ! ; Maries I ; 

 Ve itch ! In Manchuria ad fl. Ussur, Maach ! 



Engelmann places this in his § 2. Cembra:, marked, among 



