Order HI. 
MONCECIA TRIANDRIA. 
781 
13177 Spikes 3 clustered : male above ; female below 
13178 Spike solitary : male above ; female below 
13179 Spike solitary hermaphrodite flexuose, Spikelets somewhat distant 
13180 Culm nearly simple. Sheath of leaves bearded at edge, Spike smooth 
13181 Culm branched. Panicle terminal 
TETRANDRIA. 
13182 Lvs. roundish cuneiform obt. lobed at margin and serrat. somew. glutin. downy m axils of veins beneath 
/3 Leaves oblong pinnatifid. Segments cut 
13183 Leaves oblong bluntish glutinous, Axils of the veins naked 
/3 Leaves elliptical 
ISlS-t Leaves oblong acute downy beneath, Axils of the veins naked. Stipules lanceolate 
/3 Leaves green beneath, Petioles green 
13185 Lvs. obi. acute rounded at base, Petioles and veins hairy beneath, Axils of veins naked. Stipules ov.-obl. 
13186 Leaves obovate acuminate. Veins and axils of veins beneath hairy. Stipules elliptical blunt 
13187 Leaves cordate acuminate entire lucid above 
13188 Leaves ovato-deltoid acute doubly serrated glabrous 
13189 Leaves ovate acuminate cut serrate smooth. Branches scabrous pendulous [smooth 
13190 Lvs. delt. with long points unequal, sei rat. quite smooth, Scales of cones with lat. lobes roundish, Petioles 
13191 Leaves ovate acute serrated. Scales of cones with lat. lobes rounded. Petioles downy shorter than pedunc. 
13192 Leaves ovate narr. at base ent. unequally toothed smooth. Scales of cones ciliated : lateral lobes rounded 
13193 Lvs. rhomb, ov. doubly serr. acute downy beneath entire at base. Scales of cones vill. with lin. uneq. lobes 
13194 Leaves deltoid ovate small. Scales of female catkin densely woolly on the outside 
13195 Leaves ovate acuminate doubly serrate, Veins hairy beneath 
13196 Leaves cordate-ovate finely serrated acuminate, Scales of cones with blunt equal lobes and elevated veins 
13197 Leaves orbicular crenate 
13198 Leaves orbicular obovate serrated beneath with the branches downy. Female catkins cylindrical 
13199 Petiole downy, Leaves rhomboid cut-toothed obtuse nearly smooth with tufts of hair in the axillee beneath 
13200 Lvs. ovate doubly serr. smooth, Fern, peduncles branched. Scales of cones with equal trunc. nerved lobes 
13201 Leaves roundish ovate nearly equally serrate smooth. Female catkins oblong 
13202 Lvs. deltoid acute subcord. doubly serr. beneath with branches pubesc. Scales of cones with lateral lobes 
[rounded 
13203 Leaves oblong. Petioles smooth. Anthers sagittate linear 
13204 Leaves ovate. Petioles hairy at edge, Anthers ovate sagittate 
13205 Leaves opposite oblong : younger downy ; old ones smooth, Fl. axillary solitary 
13188 13191 
13199 
and Miscellaneous Particulars. 
a peculiar fragrance, which they retain after being dried in a stove, affording by infusion an agreeable diluent 
superior to some of the common teas of commerce. """cui,, 
B. populifolia and papyracea are elegant rapid growing trees, well deserving culture for their timber All 
the species are ornamental, and more or less fragrant ; and B. pumila and nana are prettv little shrubs Of 
the Betula papyracea the North American Indians construct their large portable canoes, from which circum 
stance that species is known by the name of canoe birch. Betula lenta is the most interesting of the eenus 
on account of the excellence of its wood. It is known by the names of mountain raahoganv black \rrch 
bruisid and sweet birch. This last appellation it has from the sweet scent the branchlets give wlien 
1957 Bums. An alteration of ^^1^?, its Greek name. B. sempervirens, Buis, Fr., Buchsbaum, Ger , and 
Bosso, Ital. is one of the most useful of evergreen shrubs ; edgings of the dwarf variety are of universal use in 
the walled gardens of Europe ; and what is called the tree box is not less valuable as an evergreen shrub 
which will grow under the shade and drip of trees. The box is a native of most parts of Europe, from' 
Britain southwards, and is very abundant in different parts of France and Switzerland; It abounds in many 
countries of Asia, as about Mount Caucacus, in Persia, China, Cochin China, and America It was formerly 
very common in England, but has gradually disappeared as agriculture extended. Box-Hill in Surrey Boxlev 
in Kent, and Boxwell in Gloucestershire, are named from their abounding in this tree. The timber of the 
pox tree is of considerable value. It is sold by weight, and being very hard and smooth, and not apt to warp, 
-^^K^^T' adapted to a variety of nicer works. It is as extensively employed now as it appears to have been 
m the days of Evelyn, " for the turner, engraver, carver, mathematical instrument maker, comb and pipe or 
