56 JOURNAL OF THE ARNOLD ARBORETUM [vol. v 



This variety differs in its oblong or narrow-oblong less revolute leaves 

 from the type which has linear or linear-oblong leaves. Link's description 

 of his A. glaucophylla is apparently based on a plant cultivated in the 

 Botanic Garden at Berlin and as he describes his species as with "foliis 

 linearibus, " the narrow-leaved form must be considered the type. The 

 citation of Pursh's A. polifolia £. as a synonym does not necessarily indicate 

 as Fernald assumes (in Rhodora, xvm. 100 [1916] ) that Link based his 

 species on Pursh's variety, for in this case Link is describing a plant cul- 

 tivated in the Berlin Botanic Garden and that plant of which possibly 

 specimens are preserved in the Berlin herbarium is to be considered the 

 type. Considering the specific name I fully agree with Professor Fernald 

 that A. glaucophylla Link is the same plant as A. canescens Small which 

 has to be referred as a synonym to it, and that it is not identical with A. 

 polifolia as Small (in N. Am. Fl. xxix. 61 [1914] ) has it. 



X Erica Mackaii Hook. var. Watsonii, comb. nov. 

 Erica cUiaris subsp. * Watsoni Bentham in De Candolle, Prodr. vn. 605 (1838). 



Erica ciliaris 0. Watsoni K. Koch, Hort. Dendr. 329 (1853). 



Erica Tctralix 0. Watsoni Babington, Man. Brit. FL, ed. 4, 214 (1S56). 



Erica Tctralici-ciiiaris Syme, Engl. Bot. vi. 39, t. 888 (1866). 



Erica Watsoni Macfarlane in Trans. R. Soc. Edinb. xxxvni. 237 (1895). — 



Chevalier in Monde PL vi. 53 (1896) ; vn. 193 (1S97) ; in Bull. Herb. Boissier, 



vi. apx. iv. 10 (1898). — Neyrant in Act. Soc. Linn. Bordeaux, lv. Compt. 



Rend. 160 (1900).— Schneider, 111. Handb. Laubholzk. n. 566 (1911).— 



Bean, Trees Shrubs Brit. Isles, i. 520 (1914). 



As there can be hardly any doubt that Erica Watsoni and E. Mackaii 

 are both hybrids between E. ciliaris L. and E. Tetralix, they should be 

 united under the oldest binomial designation which is E. Mackaii Hook., 

 and E. Watsoni which differs from typical E. Mackaii chiefly in its racemose 

 inflorescence and the longer corolla with oblique mouth may be distin- 

 guished as a variety. 



Vaccinium japonicum Miq. var. sinicum, comb. nov. 



Oxycoccoidcs japonicus var. sinica Nakai, Trc<>s Shrubs Jap. I. 168 (1922), 

 descriptione in lingua japonica tantum. 



A typo recedit foliis ovato-oblongis vel oblongo-lanceolatis basi late 

 cuneatis vel rotundatis subtus basin versis ad et sccus cost am ut petiolus 

 villosis interdum glabris vel fere glabris, filamentis supra medium pilosis. 



China. Kweichou: Tchuenning-shan, near Kweiyang, alt. 1100- 

 1250 m., H. Handel-Mazzetti, no. 10522 (type) July 1, 1917. Szechuan : 

 Wen chuan hsien, alt. 1500-2000 m., E. H. Wilson, no. 971, October, 1908; 

 north Wushan, A. Henry, no. 643. Hupeh: Chang yang hsien, alt. 

 1300 m., E. H. Wilson, no. 244, October, 1907; without precise locality, 

 E. II. Wilson, no. 1621, August, 1900, A. Henry, no. 6021. 



The Chinese specimens enumerated above all differ in their smaller 

 much narrower leaves never cordate or subcordate at the base, as they 

 often are in the Japanese type in which, moreover, the petioles and the 

 leaves are always quite glabrous. In its pilose filaments and its narrow 

 leaves the variety resembles V. japonicum var. lasiostemon Hayata (Icon. 



