300 
75. AMENT.4.CE.E. 
times pendulous . — puhescens (Yv.) •, l.peduneles and young twigs 
downy. B.pubescens Yhrh. — Common. T. IV.V. CommonBirch. 
[.\lthough thinking that the above jdants are really distinct, 
I am unable to draw up good paper characters for them. The 
leaves on the older iiud, if possible, the u])per branches should be 
examined as they vary in form on the lower and younger ones. 
Fries says that the wood of B. glutinosa is soft and bad whilst 
that of B. alba is hard and excellent.] 
3. B. nana (h.) 1. orbicular creiiate gluhrons: crenations ob- 
tuse, scales of the fern, catkin digitate-trifid divided almost to 
their base : lobes equal, fr. orbicular with a very naiTOW' mem- 
branous margin . — ]£. B. 2326. ?— A small procumbent shrub 
with minute leaves and little catkins. B. nana Fries !, Reich. !, 
Tausch ! — Linncei ; scales of the fern, catkins 3-lobed divided 
through only half their length, fr. elliptical with a narrow mem- 
branous margin. B. nana Linn. ! Herb. Exactly resembling 
var. a. except in the structure of the fructification. Probably a 
distinct species. — Turfy places in the highlands, a. Ben Lawers. 
fi. common. Sh. V. Dwarf Birch. S. 
5. Alnes Tourn. Alder. 
1. A. glutinosa (Gaert.); 1. roundish obtuse wavy sen’ated 
glutinous rather abrupt with a wedgeshaped base, axils of the 
veins beneath downy. — E. B. 1508. St. 29. 15.— Trunk and 
branches crooked. Male catkins long and pendent; fern, ones 
short, ovate or oblong, very persistent. A moderately large tree. 
— j3. incisa ; leaves deeply cut. — Wet jdaces and river-banks. 
S. Galloway. S. Dr. Balfour. T. III. 
Tribe IV. Cupuliferee. 
6. Fagus Linn. Beech. 
1 . F. sylvatica (L.) ; 1. ovate glabrous obsoletely dentate ciliate 
on the edges. — E. B. 1846. — A large tree. — Woods, pai-ticularly 
on chalky soils. T. III. IV. 
7. Castanea Tourn.. Chestnut. 
tl. C. vulgaris (Lam.); 1. ohlong-lanceolate acuminate mu- 
cronate-serrate glabrous on each side . — Fagus Sm., E. B. 886. — 
Height 50 — 80 feet. A magnificent tree. — A doubtful native, 
often planted. T. V. Sweet Chestnut. E. 
8. Quercus Linn. Oak. 
1. Q. Robur (L.); “young branches glabrous, 1. on short 
footstalks cuneately oblong pinnatifid slightly pubescent beneath. 
