556 
** Aments terminal: leaves mostly opposile, of two forms, i.e., subulate and loose, and 
scale-shaped and appressed-imbricated and crowded, the latter with a resiniferous 
gland on the back. 
+ With smaller bluish-black pulpy resinous berries, 
2. J. Virginiana L. (Rep CepARor SAVIN.) Varying from a shrub to a tree 18 to 
27m. high, pyramidal, with shreddy bark and red aromatic heart and wood: leaves 
opposite, mostly acutish, with entire margins: berries on straight peduncles, 1 or 
2-seeded: seeds angled, mostly grooved, and often rough toward the upper end.— 
Throughout northern, central, and western Texas. 
3. J. occidentalis Hook, A shrub or small tree, with shreddy bark and pale red- 
dish-yellow wood: leaves closely appressed, in threes (or pairs), delicately fringed 
on the edges: berries 8 to 10 mm. in diameter, with one or more seeds —Mountains, 
foothills, and bluffs of southwestern Texas, Var. CONJUGENS Engelm. is a bush or 
tree 6 to 12m. high (often with eccentric layers of wood), with 4-ranked obtuse 
closely appressed slightly denticulate leaves on slender branches, and globose ber- 
ries 6 to 8 mm. in diameter containing one or two smooth or more or less tuberculate 
seeds.—Common on the Nueces and San Antonio, but quite rare west of the Pecos. 
Var. MONOSPERMA Engelm. is a shrub or small tree of scraggy growth, with short 
branches at right angles, leaves as often in twos as threes, and smaller berries with 
a single (or two or more) less grooved seed,—Mountains of western Texas and west- 
yard. 
+ + With larger reddish-glaucous fibrous dry sweetish berries. 
4. J. pachyphloea Torr. A middle-sized tree, with spreading rounded top, thick 
much-cracked bark, and pale reddish wood: leaves squarrose, acute, denticulate or 
ciliate, usually in pairs: berries globose or irregularly tubercled, 10 to 12 mm. in 
diameter: seeds mostly 4-angled.—Mountains and hillsides of western Texas. 
5. J. flaccida Schlecht. A bush or small or middle-sized tree, with shreddy bark, 
spreading branches, and slender nodding branchlets: leaves always in pairs, acute, 
with spreading tips and slightly denticulate margins: berry large (12 to 14 mm. in 
diameter), globose or often irregularly tubereled, with 8 to 12 small much distorted 
seeds in several tiers.—Chisos Mountains. 
