326 78. AiTENTIFEB^. 



glabrous. Male catkin-scales glabrous. — Damp places and river- 

 banks. T.in. Black Poplar. E. 



Tribe II. Myricea. 



3. Mtei'ca Linn. Sweet Gale. 



1. M. Odle (L.) ; 1. lanceolate broader upwards serrate, st. 

 shrubby.—^. B. 662.— Pleight 3—4 feet. Bushy. Catkins 

 flessile erect. Fr. with, resinous glands. L. fragrant when 

 bruised.— Bogs. Sh. V. E. S. I. 



Tribe III. Betulinete. 



4. Bbt'tjia Linn. Birch. 



1. B. verrucdsa (Ehrh.) ; 1. rhomboid-triangular doubly serrate 

 abruptly acuminate, scales of the fern, catkins 3-lobed, lateral lobes 

 falcate-re/lexed, b. obovate.— Fl. Dan. 2549. Sy. E. B. 1295. B. 

 atha Koch. B. odorata R. xii. 626.— L. usually glabrous often 

 covered with resinous spots above, always having a manifest ten- 

 dency to a rhomboidal form, flat 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 and the shape of the 1. distinguish this from the next. — 

 Eather common. T. IV. V. White Birch. E. S. I. 



2. B. gkAin6sa (Fries !) ; 1. rhomboid-ovate or cordate imeq^ually 

 serrate acute, scales of the fern, catkins 3-lobed, lateral lobes as- 

 cending, fr. broadly obovate.— %. E. B. 1296. B. alba R. xii. 623. 

 B.pubescens Koch. — L. usually glabrous, always more or less ovate, 

 flat above with raised veins beneath. Stip. ovate, blimt, 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. — /3. B. puhescens (Ehrh.) ; 1. peduncles 

 and young twigs downy. — Common. T. IV. V. Cotnmon 

 Birch. E. S. I. 



3. B. ndna (L.) ; I. roundish crenate glabrous blunt, scales of 

 the fem. catkin dig^itate-trifid, lobes eq^ual, fr. orbicular with a 

 very narrow membranous margin. — B. 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 Tourn. Alder. 



1. A. glutindsa (Gaert.) ; I. roundish blunt wavy serrate 



