1919] REIIDER, NEW SPECIES. VARIETIES AND COMBINATIONS 53 



leaves, those of the shoots being about 3 cm. long and 1.75 mm, broad. 



flattened and Math a distinctly raised midrib below; both kinds of leaves 

 with more numerous rows of stomata. 



Larix dccidua Miller differs from the hybrid chiefly in the grayish yellow, 

 not glaucous branchlets and the lustrous yellowish branchlets of the previ- 

 ous season, and in the narrower leaves of the shoots, about 1.25 nun. broad 

 and not quite so compressed in the cross-section, the stomatiferous lines 

 above composed of 2-3 lines and of 3-4 lines below, the leaves of the spurs 

 w^ith 1 line on each side above and with 2-3 lines beneath on each side. 



This hybrid was first mentioned by A. Henry (1. c.) who states that plants 

 were raised at his suggestion by the late D. Keir, head forester on the 

 Atholl estates, from seeds of a tree of L. Kaempferi j)lanted close to a 

 common Larch, at Duukeld, Scotland, and that Mr. D. Keu-'s son con- 

 siders the plants intermediate between the two species. 



Plants received from Dunkcld are growing at the Arboretum and form 

 regularly pyramidal vigorous trees of which the tallest is now about 12 feet 

 tall. In general appearance they resemble most L. Kaempferi except one 

 plant which ap])roaches somewhat L, decidua, 



Pseudolarix amabilis, n. comh. — Abies Kaempferi Lindley in Gard. 

 Chron. 1854, 255, 455, fig.; 1855, 644, fig.; non Lindley in Penny Cycl. i. 34 

 {18S3),'— Larix Kaempferi Carriere in Fl. des Serr. xi. 97 (1856). 



ri Gordon, Pinet. 292 (1858). — Larix amabilis Nel- 



Pseiidolarix Kaempferi Gordon, Pinet. 292 (1858). — 

 son, Pinac. 84 (1866). — Pinus Kaempferi Parlatore in De Candolle, Prodr. 

 xvi.pt. II. 412 (1868), non Lambert. — Pseudolarix Fortunei Mayr, Mo- 

 nog. Abiet. Jap. 99 (1890). — Laricopsis Kaempferi 

 Conif. 404 (1900). 



As the combinations with the specific name " Kaemi)feri " are based on 

 the non-valid name Abies Kaempferi Lindley of 1854, they must be all 

 considered non-valid and the specific name nuist be replaced by the next 

 oldest which is Larix amabilis Nelson. Mayr in giving the new name P. 

 Fortunei to this tree was apparently not aware that it had l)een called Larix 

 amabilis in the little known and usually neglected book of J. Nelson. 



Abies homolepis Sicb. & Zucc. var tomomi, var. nov. — Abies iomomi 

 Bobbink & Atkins, [Cat.] 13 [1909?], sine descriptione. 



This forms a slenderer and more sparingly branched tree than the type; 

 the leaves are shorter, about 0.8-1.5 cm., rarely 2 cm. long. 



A plant received from Bobbink & Atkins in 1916 is growing in the Arnold 

 Arboretum. I have also seen it growing in the New York Botanic Garden 



^ Abies Kaempferi Lindley of 1833 is bused on Pinus Kaempferi Lambert which is identical 

 with Abies Irptolepis Sieb. & Zucc. of 1842. As "Kaempferi" is the oldest specific name for 

 this Larch, Sargent was correct in reestabhshing this name; for the older homonym Larix 

 Kaempferi Carriere which belongs to Pseudolarix amabilis is a non-valid name, as pointed out 

 above, and according to the International Rules it cannot prevent the reestablishment of the 

 older name. The result would be the same, if one considers Larix Kaempferi Carr. and also 

 Abies Kaempferi Lindley of 1854 as belonging partly, as to the name-bringing synonym, to tlie 

 Japanese Larcli, and partly, as to the description, to the Chinese Gold-Larch. For a complete 

 enumeration of synonyms of L, Kaempferi, the Japanese Larch, see Wilson, Conif. Jap. 30 

 (1916). 



