Illustrations of Conifers. 



ii. 



LEAVES ON ADULT PLANTS ALWAYS ACICULAE, NEVER JOINTED AT 



THE BASE. 



/. recurta, Buchanan-Hamilton. A tree with curved or pendulous branchlets. Leaves 

 in threes, loosely appressed, $ to \ inch long, sharp-pointed, greyish-green on 

 the dorsal surface, which is channelled in the middle line near the base. 



/. squamata, Buchanan-Hamilton. A prostrate shrub. Leaves in threes, appressed or 

 spreading, broader and shorter than in J. recurva, fc inch long, green on the dorsal 

 surface, which is channelled from the base to near the apex. 



J. procumbent, Siebold, is similar to J. squamata, but has larger leaves, which like the 

 branchlets are glaucous in tint. 



III. 



LEAVES ON ADULT TREES ALL SCALE-LIKE AND APPRESSED, OR WITH 

 AOICULAR FOLIAGE ON OCCASIONAL BRANCHES. 



* Leaves minutely denticulate on margins. 



(a) Fruit large, usually about J to ^ inch in diameter (1). 



f Seeds 1 to 3 in each fruit. 



J. californica, Carriere. Branchlets stout, ^5 to A inch in diameter. Leaves in 

 threes. Fruit reddish, ellipsoid, glaucous, with dry fibrous flesh. Seeds 1 to 2. 



J. mexicana, Schlechtendal. Branchlets slender, 2 V to 3 V mcn 1Q diameter. Leaves in 

 pairs. Fruit reddish, depressed, globose, glaucous, with dry fibruos flesh. Seeds 

 1 to 3. 



J. Walliehiana, J. D. Hooker. Ultimate branchlets jV inch in diameter. Fruit blue, 

 ovoid, with one large seed. 



tf Seeds 3 to 12 in each fruit. 



/. phrenicea, Linnseus. Ultimate branchlets ./" iuch in diameter ; leaves closely ap- 

 pressed, ovate, blunt, with an inconspicuous depression on the back. Fruit 

 globose or pyriform, yellow or reddish-brown, with fibrous yellow flesh. Seeds 

 8 to 9. 



J. jlaccida, Schlechtendal. Tree with long pendulous branchlets, . t \, inch in diameter. 

 Leaves ovate, lanceolate, slightly spreading, -t\ inch long, eharp-pointed with resin- 

 glands on the back. Fruit globose, reddish-brown. Seeds 6 to 12. 



J. pachyphlaa, Torrey. Tree with thick bark divided into small square plates, unique 

 in the genus. Ultimate branches quadrangular, -J r> inch in diameter. Leaves 

 appressed, rhombic, with a depressed oval gland, often exuding resin. Acicular 

 leaves often present.Fruit reddish-brown, tuberculate on the surface. Seeds 4. 



(b) Fruit smaller, about J inch long. 



J. occidentalis, Hooker. Branchlets terete, about 2 J ff inch in diameter. Leaves in 

 threes. Fruit bluish-black, pulpy. 



.7. tetragona, Schlechtendal. Branchlets distinctly four-angled, /- inch in diameter. 

 Leaves in pairs. Fruit bluish-black, pulpy. 



(1) In J. phtenicea the fruits are sometimes smaller. 



