589] ENGELMAN^—AkfeR. jyNMk§ 0# S^dwSAfltNA. 7 
about St. George, Utah, where the variety furnishes the common firewood, 
it is a small tree 20 feet high; berries smaller, 3-5 lines long; cotyledons 
same as in the species, never less than 4. Dr. Palmer'has sent from the 
Colorado River a form with whitish, scaly bark; which I cannot otherwise 
distinguish, but have, seen no mature fruit of it.—The plant is-often con¬ 
founded with the stouter forms of J. occidentalis, but in fruit can always 
be readily distinguished. V 
2. J. Mexzcana, Schlechtend.: A bush or (fide Parlatore) a pyramidal 
tree; spray much more slender than the last, older branchlets with semi- 
acerose, squarrose leaves; leaves of ultimate branchlets mostly in pairs, 
slender, acute, irregularly denticulate; anther-scales in pairs (about 12) 
strongly cuspidate or almost acuminate ; scales of female ament about 
2 pairs, spreading, rarely in 3’s; berry globose or oval, as large as and 
similar to that of the foregoing species ; seeds single or often 2 or 3, simi¬ 
lar to the last. — Linnaea 5, 77 (1830); ib. 12,494. Parlat. inpeProd. 
16,2,491. (See Fig. 2.) 
Mexico.—The i-seeded form is Shlechtendal’s original, sentby Sckiede 
from Llanos dePerote; Real del Monte, Hartweg, 433. A 2-3-seeded 
form has been collected at the last locality, by Ehrenberg (often with 
protruding seeds) and Gregg , 636; in the Sierra Madre, Seemann , 2001; 
Cosiquiriachi, Wislizenus , 230.—Most collectors describe this species as a 
bush or small tree, but Parlatore assigns to it, without giving his author¬ 
ity, a height, sometimes, of 70-90 feet; he gives the bark as secede?is, 
shreddy. The slender branchlets, the acute, denticulate, not deeply 
fringed leaves spreading on the older branchlets, and the regularly 2-coty- 
ledorious embryo, distinguish it readily from the last. 
3. J. pachyphlcea, Torr. : A middle-sized tree with a spreading, 
| rounded top, thick and much cracked bark and pale reddish wood, closely 
allied to the last, with the same squarrose leaves on the stouter branchlets, 
but distinguished by the slenderer, acuter, less prominently denticulate or 
ciliate leaves, usually in pairs, and by the obtusish anther-scales; berry 
globose or irregularly tubercled, 5-6 lines thick; seeds mostly 4, angular. 
—Bot. Whipp. in Pacif. R. Rep. 4, 142 (1857); Bot. Mex. Bound. 210; 
Pari. 1. c. 490. J. piochyderma, Sitgr. Rep. (1853), tab., 16, spalm.; 
Pari. 1. c. 492. (See Fig. 3.) > 
New Mexico^ and Arizona, Wood/iouse, Parry, Wright, Coues, Palmer, 
Greene,— Further examination must show whether it stands not too close 
to the last; but the character of the bark seems to distinguish it completely 
from that and any other species. In the report of Sitgreave’s Expedition, 
P-12, this singular species is mentioned, and on page 173 Torrey gives a 
short account of this and two other forms, without naming them. The 
plate with the name of y. flochyderma, probably a mistake of the litho¬ 
grapher for j) achy derma, gives a rough figure of our tree. 
4. J. FLACciDA,. Schlectend.: A bush, or small orroiddle-sized tree with 
shreddy bark, with spreading branches and slender, nodding branchlets ; 
leaves always in pairs, acute with spreading tips and slightly denticulate 
