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2. PLANERA Gmelin. (PLANER-TREE.) 
Trees, with small leaves (like those of elms), monceciously-polyg- 
amous flowers in axillary clusters, 4 or 5-cleft calyx, 4 or 5 stamens, 
and ovoid 1-celled ovary crowned with 2 spreading styles which are 
stigmatic down the inner side. 
1. P. aquaticaGmelin. Nearly glabrous: leaves ovate-oblong: fruit stalked in the 
calyx, beset with irregular rough projections.—Wet banks, extending from the Gulf 
States to Kansas and the valley of the Trinity. 
3. CELTIS L. (NErrLe-rreE, HaACKBERRY.) 
Trees or shrubs, with inequilateral pointed short-petioled leaves, 
greenish axillary flowers, the fertile peduncled and solitary or in pairs, 
the lower usually staminate (only) and fascicled or racemed, 5 or 6- 
parted persistent calyx, 5 or 6 stamens, 1-celled ovary, 2 long-pointed 
recurved stigmas, and a globular drupe. 
1. C. pallida Torr. Shrub 18 to 30 dm. high, with numerous flexuous spreading 
white-puberulent branches: spines in pairs, 4 to 25 mm. long: leaves ovate or ovate- 
oblong, 16 to 28 mm. long, mostly acute, scabrous on both sides, thickish: flowers 
sinall, white, in polygamous cymes of 3 to 5 flowers longer than the petiole; the 
lower mostly staminate with rudimentary pistils, the terminal one perfect: styles 
thick, cleft nearly half their length: fruit ovate, glabrous, 6 mm. long, orange, 
yellow, and red, with an acid pulp.—Very common on all mesas and foothills of west- 
ern and southern Texas. Known as ‘“ 
2, C. reticulata Torr. Somewhat pubescent with short spreading hairs: leaves 
thick, very rough and strongly reticulated, 5 to 10 cm. long, obliquely ovate, cordate 
at base, shortly acuminate, sharply serrate or sometimes partially entire: fruit 6mm. 
or more broad, on slender pedicels 10 to 14 mm. long.—From New Mexico to Uvalde, 
Texas. 
3. C. occidentalis L. (SuGarsperry. HACKBERRY.) Small or sometimes large 
tree: leaves reticulated, ovate, cordate-ovate, and ovate-lanceolate, taper-pointed, 
sharply serrate, sometimes sparingly so or only towards the apex, scabrous but 
mostly glabrous above, usually soft pubescent beneath (at least when young): fruit 
reddish or yellowish, turning dark purple at maturity, its peduncle once or twice the 
length of the petiole.—Very common in the valleys of western and southwestern 
Texas. ‘‘ Palo blanco.” 
4, C, Mississippiensis Bosc. Simalltree, wath warty bark: leaves entire (rarely 
few toothed), very long taper-pointed, rounded at base, mostly oblique, thin, smooth: 
fruit small.—Extending to central Texas. 
granjeno.” 
4. HUMULUS L. (Hop.) 
Twining rough perennials, with stems almost prickly downward, 
heart-shaped leaves, ovate stipules between the petioles, sterile flowers 
of five sepals and five erect stamens in loose axillary panicles, folia- 
ceous imbricated bracts two-tlowered and forming a sort of membrana- 
ceous cone in fruit, and achenes invested with the enlarged scale-like 
valyx. 
1. H. Lupulus L. (CoMMOoN Hop), Leaves mostly 5 to 5-lobed, commonly longer 
than the petioles: bracts, ete., smoothish: the fruiting calyx, achene, etc., sprinkled 
with yellow resinous grains which give the bitterness and aroma to the hop,— 
Alluvial banks of northern Texas. 
