98 JOUKNAL OF THE EOYAL HOKTICULTURAL SOCIETY. 



two genera occurred in the nurseries of Messrs. Paul & Son, of Cheshunt, 

 among some Yews, but unfortunately no record was taken, and the plant 

 is no longer in existence in the nursery. 



In the genus Juniperus the following supposed hybrids occur : — 

 JuniiJerus comiimnis x /. sabinoides = J. Kanitzii x, Csato', ex 

 Wettstein in " Sitzb. Wien. Acad." xcviii. (1887), 333 ; Kerner, " Natural 

 History of Plants," English edition, ii. 565. This form was found in 

 Transylvania. 



/. communis x /. nana — J. intermedia, Schur, Wettstein, loc. cit. 

 332. 



Wettstein considers that the differences in the minute anatomical con- 

 struction of the leaf in the Junipers above mentioned, as also in Pinus 

 Neilreichiana x P. rhcetica, are sufficiently marked to be used as 

 diagnostic characters between them and their reputed parents. This con- 

 clusion, however, is not endorsed by M. Joseph Erb, Avho has had 

 the opportunity of studying them in Switzerland.* I have no personal know- 

 ledge of any of these alleged hybrids ; but with regard to Juniperus inter- 

 media, which is supposed to be a cross between J. communis and J. nana, 

 I may point out that intermediate forms between these two are not at all 

 uncommon, and have been mentioned by various observers, who have 

 not attributed these variations to hybridisation. I myself found in 1900, on 

 the Wengern Alp above Lauterbrunnen, a shrub, the lower branches of 

 which were spreading and even prostrate, with short, relatively obtuse 

 thick leaves, as in /. nana ; whilst the central branch was erect, and its 

 subdivisions bore numerous fiat, thin, sharply-pointed leaves, more like 

 those of the ordinary /. communis. 



Thuya : Biota meldensis is a form first found in a cemetery near Meaux, 

 in proximity to bushes of Thuya orientalis and Juniperus virginiana. It 

 was in consequence considered to be a hybrid between those two species,t 

 but there seems little doubt that it is a stage of growth of T. orientalis, 

 analogous to those forms of Cupressus, Juniperus, and Thuya which have 

 been included in the spurious genus Betinospora. 



In the " National Nurseryman," published at Kochester, U.S.A., 

 under date of February, 1900, p. 4, a "new evergreen " is described under 

 the name of the " Rosedale hybrid." It is said to have originated in the 

 Rosedale Nurseries, Washington County, Texas, as a cross between the 

 Golden Arbor Vitse [Thuya orientalis var.) and Betinospora squarrosa 

 (= Cupressa pisifera forma squarrosa). " It has the same dense, com- 

 pact, upright and uniform growth as the Golden Arbor Vitae, while in 

 textvu'e and colour it resembles the Retinospora, except that it is soft and 

 feathery to the touch. In colour it is a bright fresh pea-green, very 

 striking and attractive." 



* Wettstein, " Ueber die Verwerthung anatomischer Merkmale zur Erkennung 

 hybrider Pflanzen," in Sitzh. d. Kais. Acad. d. TT'i5s<?«sc/zrt/^ Wien, December (1887); 

 Abtheilung i. Erb in BericJit der Schweiz. botanischen GeseUschaft, Heft vii. (1897). 



t Carrrere, Trait6 General des Coniferes, ed. 2 (1867), p. 103, who describes the 

 plant, docs not share this- opinion. See also Gordon, Pinetum, ed. 2 (1875), p. 57. 

 This last-named author considers it a " very doubtful hybrid." Bsissner, Handhuch 

 der Nadelholzk7inde (1891), p. 58, speaks of it as a transitional form of Biota 

 orientalis (" Uebergangsform"). Kent, in Veitch's Manual of the Coniferce (1900), 

 p. 249, refers to it as a variety of Thuya [Biota) orientalis. 



