32 CONIFERS AND TAXADS OF JAPAN 



(1909). Nakai in Jour. Coll. Sci. Tokyo, XXXI. 382 (Fl. Kor. pt. 2) (1911). 

 Henry in Gard. Chron. ser. 3, LVIII. 178, fig. 58, 59 (1), 60 (3) (1915). 



Larix dahurica Lawson, Agric. Man. 389 (name only) (1836). 



Pinus dahurica Fischer apud Turczaninow in Bull. Soc. Nat. Mosc. XI. 101 (name 



only) (Cat. PL Baical.) (1838). 



Larix europaea, var. dahurica Loudon, Arb. Brit. IV. 2352 (1838). 

 Abies Gmelinii Ruprecht in Beitr. Pflanz. Russ. Reich. II. 56 (1845). 

 Larix dahurica, a typica Regel in Gartenfl. XX. 105, t. 684, fig. 9, 10 (1871) ; in Act . 



Hort. Petrop. I. 160 (Revis. Spec. Crataeg. Dracaen. Laric. 59) (1871-72). 

 Larix Cajanderi Mayr, Fremdl. Wald- u. Parkb. 297, fig. 88 (1906). 



This Larch is distributed over an immense tract of country from near the 

 eastern shores of Lake Baikal northward and eastward; in the south it extends 

 into Mandshuria and Korea, where, however, as well as in extreme northeast 

 China, it is chiefly represented by its large-coned variety Principis Rupprechtii 

 Rehd. & Wils. Although many references to L. dahurica can be cited and Law- 

 son states that it was introduced into England in 1827, very little has been re- 

 corded concerning the habit and general appearance of this Larch. 1 It is doubtful 

 if there are any good specimens of this tree in cultivation in Europe, 2 except per- 

 haps in Russia, and there are certainly none in this country. In this Arboretum 

 we have small plants growing under this name and received from various sources. 

 Some of these are L. sibirica Ledeb., some L. pendula Salisb., others L. dahurica, 

 var. japonica Maxim, and one plant only is referable to typical L. dahurica. In 

 the Botanic Gardens at Petrograd 3 and Moscow I have seen trees labelled L. 

 dahurica, but unfortunately I made no notes on the habit and appearance of these 

 trees. I have a poor photograph of the trees in the Botanic Gardens, Moscow, 

 but these are crowded together, have crooked trunks and have evidently suffered 

 from the influence of strong winds and nothing of value is shown by it. One 

 of these trees has flat, stiff, wide-spreading horizontal branches. I have before 

 me specimens collected near Khabarovsk and others near Sryetinsk by Professor 

 Sargent in August 1902 and by him named L. dahurica. They have the typical 

 small cone as figured by Trautvetter, and most of the shoots are pale-colored and 

 glabrous or nearly so, but some shoots are densely clothed with a short, crisped, 

 red-brown pubescence and are reddish in appearance, as in typical L. dahurica, 

 var. japonica Maxim. In this herbarium there are a number of specimens of L. dahu- 

 rica collected in various parts of continental northeastern Asia, and in these the 

 cones, cone-scales and bracts vary in size and shape and in some the cone- 

 scales are glandularly puberulous on the dorsal surface; the leaves on the short 

 shoots vary in size and may be without stomata on the upper side or these 

 may be present in broken and obscure lines; the shoots are glabrous or nearly 



1 A note on this subject to Mr. W. J. Bean, Assistant Curator, Royal Gardens, Kew, elicited the 

 following reply. "I am afraid I cannot help you about L. dahurica and L. sibirica. They both 

 do so very badly here and have no cones, so that one has no basis to go on. I must say, however, that 

 there seems to be nothing to distinguish them as they grow here. Larix kurilensis, as we grow it, is 

 absolutely distinct in every way most of all by its very pubescent shoots." 



2 The L. dahurica of Elwes & Henry (Trees Gr. Brit. & Irel. II. 379 [1907]) is mainly L. pendula 

 Salisb., a hybrid between L. decidua Mill, and L. laricina K. Koch (see Henry in Gard. Chron. ser. 3, 

 LVIII. 178, fig. 58 a, b, fig. 59, 2 (1915). 



3 Specimens with cones in this herbarium received from the Botanic Garden, Petrograd, as L. 

 dahurica do not belong to that species, but to L. pendula Salisb. From cultivated trees of the true 

 L. dahurica I have seen no cone-bearing material. 



