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1894. ] Undescribed Plants from Guatemala, 13 
ous; petioles slender (1—2"), triquetrous by produced nerves 
of leaf, estriolate; leaves glabrate, the opposite somewhat un- 
equal, obliquely oblong-elliptical (4-6.5 x 1-2"), prolonged 
to a slender (6-9') and sharply serrate tip, base acute and 
induplicate, serrate throughout, 3-nerved to apex, exterior 
veins all equal and ascending to margin of incurved crena- 
tions, interior veins anastomosing, veinlets finely reticulat- 
ing, pellucid, upper surface striate with small cystoliths, the 
lower glaucous: moncecious; staminate cymes geminate, 
shorter than petiole (5-8'), peduncle bifurcate, flowers 
single and racemose or few-clustered on long spreading 
branches; perianth in aestivation oval (1') and exceeding 
pedicel, obtuse segments incrassate at the base and back, sta- 
mens twice longer, rudimentary ovary minutely subulate; 
pistillate cymes from uppermost axils much smaller, in anthe- 
sis conglomerate, broadly cucullate segment of perianth thick- 
ened and exceeding the scarious exterior ones, ovary slend- 
erly elliptical.—Intermediate between P. multiflora Wedd. 
and P. falcata Liebm.—San Miguel Uspantdn, alt. 6,500“, 
April 1892, Heyde & Lux, no. 3,147. 
PINUS DONNELL-SMITHII Mast., Botan. Gaz. 16: 199. 
PLANATION OF PLaTe II.—Fig. 1, portion of branch with leaf-scars, tufts 
: ; 
se.—Fig. 
showing lines of stomata and serrations at the edge.—Fig. 3* , section of leaf 
di : : 
m 
leaf or ‘‘sguama fulcrans"’ 
2 diam.— Fig. 6, stamen 
; e 
side magn. 6 diam.—Fig, 8, pollen grain magn. 200 diam.—Fig. 9, ripe cone. — 
1g. 10, longitudinal median section of cone.—Fig. 11, detached scale of cone 
showing apophysis and umbo.—Fig. 12, scale of cone seen from the side.— 
1g. I g seed, 
Casionally furcate, filiform (12-17"), rachis angulate, bracts 
broadly oval and long-acuminate, flowers solitary and sessile, 
