ENUMERATION OF CONIFERS 199 



Carr.). Irish J. Narrow columnar form, with upright branches, deep green, 

 tips of branclJets erect: leaves shorter, less spreading. 



Var. pendula, Carr. Shrub with spreading, recurving branches and 

 pendulous branchlets. Var. oblongo-pendula, Carr. (var. reflexa. Pari., not 

 J. ohlonga peiidula. Knight). An upright shrub of broadly columnar outline 

 with pendulous branchlets. A very graceful form. 



Var. depressa, Pursh (J. communis var. canadensis. Loud. J. canadensis, 

 Burgsd. J. nana canadensis, Carr.). Prostrate J. Forming broad patches, 

 the stems ascending from a procumbent base, rarely exceeding 4 feet in 

 height. The leaves somewhat shorter and broader. A form of this is var. 

 aureo-spica, Rehd. {J. nana canadensis aurea, Beiss. J. canadensis aurea, 

 Hort.). Tips of branchlets golden-yellow. 



Var. montana, Ait. {J. comiimnis nana. Loud. J. nana, Willd. J. alpina, 

 S. F. Gray. J. sibirica, Burgsd.). Mountain J. Low, spreading or pro- 

 cumbent shrub, seldom over 2 feet high: leaves oblong-linear, abruptly 

 pointed, usually incurved, densely clothing the branches, with a broad 

 silvery-white line above, M~H inch long. Arctic and mountainous regions. 



Var. Jackii, Rehd. Prostrate, with flagelliform trailing branches often to 

 3 feet long, and almost unbranched except for occasional clusters of short 

 lateral branclilets 1-2 inches long: leaves linear-lanceolate, incurved. Oregon, 

 northern California. — Introduced in 1904 to the Arnold Arboretum. 



Var. nipponica, Wils. (/. nipponica, Maxim.). Similar to the preceding, 

 but leaves deeply sulcate above and keeled below. High mountains of Japan. 

 — Introduced in 1915 to the Arnold Arboretum by E. H. Wilson. 



Section III, Sabina, Endl. 



Leaves opposite or ternate, decurrent, not jointed, usually with a gland 

 on back, scale-like or partly needle-shaped, rarely all needle-shaped and 

 ternate; winter-buds indistinct, naked: flowers monoecious or sometimes 

 dioecious, terminal: seeds 1-6, free. 



7. J. squamata, Lamb. {J. recurva var. squamata. Pari. J. remirva var. 

 densa, Hort.). Decumbent shrub, sometimes ascending; branchlets thick, 

 ascending at the apex, green: leaves crowded, loosely appressed, linear- 

 lanceolate or lanceolate, straight or slightly curved, finely pointed, grayish- 

 or bluish-green, with 2 grayish-white bands above, convex below and grooved 

 from the base to near apex, }/q-}4: inch long: fruit changing from reddish- 

 brown to purplish-black, globose-ovoid, 3^-^ inch long. Afghanistan, 

 Himalayas, western China. 



Var. Fargesii, Rehd. & Wils. Tree to 70 feet: leaves longer and narrower, 

 linear-lanceolate, more spreading, usually about }/^ inch long, acuminate: 

 fruit ovoid, 3^ inch long. 



