454 CORRECTIONS AND ADDITIONS TO VOLUME II 
Corylus (p. 447). After C. heterophylla insert: 
CoRYyLus spec. 
Western Szech'uan: Fang Hsien, woods, alt. 1600-2000 m., 1907 (No. 
729; bush or tree 3-10 m, tall; plants only). 
Betula 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 locality, 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 living plants, too, in this Arboretum 
look very different from those of typical 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; 
ramuli hornotini (et biennes) plantae maturae glabri, vix v. parce glandulosi, 
atrobrunnei, vetustiores einerascentes epidermide secedenti, plantae juvenilis et 
sureuli distincte glanduliferi, interdum parce pilosi. Folia ramulorum 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 folis rhomboideis sensim acuminata, 4-8 cm. longa, 3-6 cm. lata, superne 
intense et obscure viridia, glabra, satis dense glanduloso-punctata, subtus pallide 
viridia, glabra v. ad nervos sparsissime pilosa, satis dense glandulosa, margine 
paulo inaequaliter acute aperte glanduloso-dentato-serrata; folia ramulorum 
sterilium surculorumque latiora, late ovato-triangularia, basi truncata v. leviter 
subcordata, apice subsensim breviter acuminata, 7-13 em. longa, 6-8.5 cm. lata 
(in planta juvenili folia sunt plus minusve pilosa) margine magis inaequaliter den- 
tata, pleraque sublobulata; petioli plerique 1.5-2.3 em. longi, glabri, glandulosi, 
surculorum in comparationelaminae breviores. Amenta fructifera solitaria, pendula, 
cylindrica, plantae chinensis 3-4 em. longa et 6—6.5 mm. crassa, plantae juv 
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 lateralibus plerisque patentibus 
paulo recurvis obtusis lobo mediano lanceolato acuto circiter subduplo longiore 
quam lato; nuculae anguste ellipticae circiter 3 mm. longae, alis latis nuculis vix 
v. -plo latioribus. 
Western Szech'uan: see p. 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. kamischatica. The color of the leaves 18 
a dull dark, sometimes rather bluish green and not as bright as it is in the other 
