PINACEAE. PINUS 3 



che, Valley of Ya-lung, type locality, alt. 3000-3600 m., October 1908 

 (Nos. 1465, 1466, 1467, 1478); alt. 4000 m. (No. 1479); forests of 

 Ta-pao-shan, northeast of Tachien-lu, alt. 3500 m., July 1908 (No. 

 1491); descent of Hsao-chin-ho, Mou-kong-ting, alt. 2300-2600 m., 

 June 1908 (No. 1500); north of Tachien-lu, alt. 3300 m., July 1908 

 (No. 2502); Moshi mien, southeast of Tachien-lu, alt. 1600-2000 m., 

 October 1908 (No. 2504); Sung-pan, alt. 2600-3000 m., 1910 (No. 

 4055); no locality, 1910 (No. 4073). 



Pinus Wilsonii Shaw, n. sp. 



Arbor excelsa foliis geminis rigidis 7-10 cm. longis, canalibus resini- 

 feris numerosis in textura virente externis, strobilis solitariis v. 2-3 

 verticillatis, junioribus subterminalibus mucronatis, adultis 4-6 cm. 

 longis ovato-conicis obtusis subconformatis pedunculatis patulis v. 

 reflexis persistentibus in aetate matura dehiscentibus, squamarum 

 apophysi subelevato-pyramidata nitido-fusca, umbone prominente 

 saepe mucronato. 



Western Szech'uan: Wa-ssu country, alt. 1600-2300 m., May 

 and July 1908 (No. 1475); Wa-shan, alt. 2000 m., September 1908 

 (No. 1477); Mao-chou, alt. 1900 m., May 1908, type specimen (No. 

 1493); Niu-tow-shan, west of Kuan Hsien, alt. 2300 m., June 1908 

 (No. 2500); Min Valley, 1910 (No. 4056). 



In many particulars this Pine resembles the previous species and ultimately 

 may be united with it; the principal difference lies in its subsymmetrical cone and 

 its possibly invariable number of fascicle leaves. The species is established on the 

 representation of Mr. Wilson, who considers it entirely distinct from all the other 

 Pines that he has seen in China. 



