24 ERYTHEA. 



of Pseudotsuga taxifolia Britton. These, as well as Kafinesque's 

 \'Qx\Qiy pahistris alluded to above, must now be referred to the new 

 binomial Pseudotsiiga viucronata. 



The synonymy of the species and its varieties is as follows: — 

 „ V Pseudotsuga mucronata Sud worth, in Holzing. Coutrib. U. S, 

 Nat. Herb., iii.. No. IV, 26(j, Nov. 23, 1895.'-^ 

 Pinus taxifolia Lamb., Gen. Pin., Ed. I, 27, t. 33, 1803. Not 

 Pinus taxifolia Salisb., Prod. Stirj)., 399, 1796, a synonym of 

 Abies balsamea Mill. 

 Abies taxifolia Loisel., Nouv. Duhnm., v., 292, 1812. 

 Abies viucronata Raf., in Atl. Joui-n., 1832, 120. 

 Abies Dotcglasii Lindl., in Penny Cyclop., i, 32, 1833; Nutt., 

 Sylva, iii, 129, t. 115; Newberry, Pacif. R. Rep., vi, 54, t. 8, 

 Pinus Douglasii Lamb., Gen. Pin., Ed. II, iii, t. 90, 1837. 

 Picea Douglasii Link, in Linn?ea, xv, 524, 1841. 

 Tsuga Dotiglasii Carr., Trait. Conif., Ed. I, 192, 1855. 

 Pseudotsuga Douglasii Gdivv., op. cit. Ed. II, 256, 1867. 

 Pseudotsuga taxifolia Britton, in Trans. N. Y. Acad., viii, 741, 

 1889. 

 v' Var. suberosa Lemmon, nom. nov. 



Ps. taxifolia var. suberosa Lemmon, Erythea, i, 48, 1893. 

 K Var. elongata Lemmon, nom. nov. 



Ps. taxifolia var. elongata Lemmon, Erythea, i, 49, 1893. 

 V Var. palustris Lemmon, nom. nov. 



Abies mucronata \2<x. pahistris Raf., in Atl. Journ., 1832, 120. 

 Engelmann names a xsirxQiy pendula, of Ps. Douglasii, in the 

 Calif. State Survey Botany, ii, 483; this, however, is no more than 

 a pendulous form such as we find in many coniferous species. At 

 least seven other forms of this species are met with under cultivation; 

 they are known to gardeners by the names brcvifolia, elcgans, 

 glatica, revohita, Stairii, taxifolia, and variegata. 



Engelmann's variety macrocarpa of P. Douglasii is P. macro- 

 carpa, a valid species. 



The name- changes recorded above are partly due to the fact^tliat 

 all the cone-bearing trees known to the ancients were at one time 

 called Pines or Firs. Early in the eighteenth century Tournefort 

 distinguished, and described technically, three genera of Coniferte; 



