308 
t i . AMENTIFEBJE. 
Tribe II. Myricea. 
3. Mtbi'ca Linn. Sweet Gale. 
1. 31. Gale (L.) ; 1. lanceolate broader upwards serrate, st. 
shrubby.— ^.^.562.— Heights— 4 feet. Bushy. Catkins 
sile, erect. Fr. with resinous glands. L. fragrant when bruised. 
—Bogs. Sh. V. E. S. I. 
Tribe III. Betulinece, 
4. Bet'itla Linn. Birch. 
1. B. al'ha (L.); 1. rhomboid-triangular doubly serrate abruptly 
acuminate, scales of the fern, catkins 3-lobed, lateral lobes falcate- 
1-eJlexed, fr. obovate. — E. B. 2198 (upper fig.). B. alba Koch. 
B. odorata E,. xii. 626. B. verrucosa Fries ! — L. usually gla- 
brous often covered with resinous spots above, always having a 
manifest tendency to a rhomboidal foi-m, tlat beneath'with raised 
veins above. Young shoots mostly with resinous tubercles, 
often very long and pendulous. Stip. ovate-lanceolate, acute, 
thrice as long as broad, circinate; sides not deflexed. Buds 
conical. The catkin-scales distinguish this from the next ; the 
shape of the 1. also is difi'erent. — Rather common. T. IV. V. 
White Birch. E. S. I. 
2. B. glutindsa (Fries !) ; 1. rhomboid-ovate or cordate un- 
equally serrate acute, scales of the fern, catkins .3-lobed, lateral 
lobes ascending, fr. broadly obovate. — E.B. 2198 (lower fig.). 
B. alba R. xii. 623. B. pubescens Koch. — L. usually glabrous, 
always more or less ovate, flat above with raised veins beneath. 
Stip. ovate, blunt, twice as long as broad ; sides deflexed. Buds 
ovoid. Not so elegant a tree as the preceding and often little 
more than a bush. Twigs sometimes pendulous. — jS. B. pubes- 
cens (Ehrh.) ; 1. peduncles and young twigs dovray. — Common. 
T. rv. V. Common Birch. E. S. I. 
3. B. ndna (L. ) ; I. roundish crenate gliibrous blunt, scales 
of the fem. catkin digitate-trifid, lobes equal, fr. orbicular with a 
very narrow membranous margin. — E. B. 2326. — A small pro- 
cumbent shrub. L. minute. Catkins subsessile, small. — Turfy 
places in the Highlands. Sh. V. Dwarf Birch. S. 
5. Al'nus Toum. Alder. 
1. A. glutindsa (Gaert.) ; 1. roundish blvmt wavy serrate 
glutinous rather abrupt with a wedgesliaped base, axils of the 
veins beneath downy.— B. 1508. R. xii. 641. St. 29. 1.5.— 
A moderately large tree. Trimk and branches crooked. Male 
catkins long and pendent ; fem. ones short, ovate or oblong, very 
