454 CORRECTIONS AND ADDITIONS TO VOLUME II 



Corylus (p. 447). After C. heteropkylla insert: 



CoRTLtJs spec. 



Western Szech'uan: Fang Hsien, woods, alt. 1600-2000 m., 1907 (No. 

 729; bush or tree 3-10 m. tall; plants only). 



Bettila utilis, var. Prattii (p. 457). Add the following number: 

 Western Szech'uan: Tachien-lu, alt. 2500-4000 ft., 1908 (No. 1415; trees 

 13-33 m. tall, girth 2-6.5 m.; plants only). 



Betula albo-sinensis (p. 457). Add the following numbers: 



Western Hupeh: Fang Hsien, alt. 2000-3000 m., 1907 (No. 705; tree 7-20 



ft. tall, bark white and rough; plants only); same locaUty, 1907 (No. 705"; tree 



7-12 m. tall; plants only). 



Betula japonica, var. mandshurica (p. 461). The true var. mandshurica from 

 Mandshuria remains somewhat doubtful and, as I have already stated, the Chinese 

 White Birch of western Szech'uan seems geographically well separated from the 

 other forms of B. japonica Siebold. The hving plants, too, in this Arboretum 

 look very different from those of tjT^ical B. japonica and of the var. kamtschatica. 

 I think it best, therefore, to describe the western form as a distinct variety : 



Betula japonica, var. szechuanica Schneider, nov. var. 

 Betula alba, var. vulgaris Franchet, and also Burkill, see p. 461. 



Arbor ad 20 m. alta, trunco ambitu ad 2.4 m. cortice albo secedente tecto; 

 ramuH hornotini (et biennes) plantae maturae glabri, vix v. parce glandulosi, 

 atrobrunnei, vetustiores cinerascentes epidermide secedenti, plantae juveniUs et 

 Burculi distincte glanduUferi, interdum parce pilosi. FoUa ramulorimi fructiferorum 

 late ovato-triangularia, ovato-rotunda v. ovato-rhomboidea, basi rotunda, late 

 truncata v. plus minusve cuneata, versus apicem satis subito breviter acuminata v. 

 in foliis rhomboideis sensim acuminata, 4-8 cm. longa, 3-6 cm. lata, supeme 

 intense et obscure viridia, glabra, satis dense glanduloso-punctata, subtus palUde 

 viridia, glabra v. ad nervos sparsissime pilosa, satis dense glandulosa, margine 

 paulo inaequaUter acute aperte glanduloso-dentato-serrata; folia ramulorum 

 BteriUum surculorumque latiora, late ovato-triangularia, basi truncata v. leviter 

 subcordata, apice subsensim breviter acuminata, 7-13 cm. longa, 6-8.5 cm. lata 

 (in planta juvenili folia sunt plus minusve pilosa) margine magis inaequaUter den- 

 tata, pleraque sublobulata; petioU plerique 1.5-2.3 cm. longi, glabri, glandulosi, 

 surculorum in comparatione laminae breviores. Amenta f ructif era soUtaria, pendula, 

 cylindrica, plantae chinensis 3-4 cm. longa et 6-6.5 mm. crassa, plantae juvenilis 

 cultae ad 5 cm. longa et 1 cm. crassa, pedunculis tenuibus glabris glandulosis 10- 

 14 mm. longis; bracteae satis variabiles, pilosulae, ab iis varietatum alterarum vix 

 distincte diversae, 4.5-5.5. mm. longae, lobis lateraUbus plerisque patentibus 

 paulo recurvis obtusis lobo mediano lanceolato acuto circiter subduplo longiore 

 quam lato; nuculae anguste eUipticae circiter 3 mm. longae, ahs latis nucuhs vix 

 V. J^plo latioribus. 



Western Szech'uan: seep. 461. The type is Wilson's No. 983. — South- 

 ern Szech'uan: "in silvis inter Liuku et Kuapie, alt. circiter 2800 m., Maj. 

 19, 1914," C. Schneider (No. 1320; tall bush or tree, up to 5 m. high). 



Young vigorous trees in this Arboretum raised from seeds of Wilson's Nos. 983 

 and 4088 are very different in their widely spreading branches from those of 

 typical B. japonica and also from var. kamtschatica. The color of the leaves is 

 a dull dark, sometimes rather bluish green and not as bright as it is in the other 



