176 
FORESTRY. 
THE SITKA SPRUCE 
GST c trees that are likely to 
secure a а рер int eem in any scheme of 
forestry operations that ma; undertaken in 
the bee tres the Sitka « or r Tideland Spru 
(Picea nsis) will be of t ne gf an 
Ys roduces ti i e 
Mine 
I of la din etd тї! 
North give ed de Nitka satis is found from 
a ТУЕ in point | їп Alaska to кее 
ommon in 
here in 
an 
ces it occur pure forests on swampy 
Hp — the months of zi ivers, little, if at 
ts ewhere it d be 
r bd 
Fic. 74 —AUBRIETIA, HELIANTHEMUM, SAPONARIA 
(See p. 
Fir, species of Abies, Thuya plicata and other 
kinds, m its most northerly limits it is reduced 
a до sh. 
tO hi ев may be dis stinguished amon Im 
Mureti, by its stiff, flat, P ; 
which vary from 4 inch to 14 inch in length, Pet 
re green above and ucous beneath. They 
surround the branches, bu e denser on the 
er than on the lower surface. The mature 
cones are bright brown, cylindrical, 21 inches 
to 4 inches Da with rather prominen spem 
with an pg ce or toothed margin 
upper реге Тһе small with a уй уы 
t of view the wo 
mber poin oed i 
light, an nd strong, — enter Faine Зу 
трас, and often yellowi colour ape 
when Сызыгы E has 
war a tio cted is 
suitable for aeroplanes, and for by 1 
or four years it has pon ee e of the most eagerly 
sought after woods for he purpose, all the best 
quality wood bein Аск ed for MA 
Manufacturers in this country usually refer to it 
as Si pe saber 
ee was pee discovered by Menzies 
THE GARDENERS ООМО ___ 
in 1792, but it was left for Douglas to send the 
first fertile seeds home in 1831. Its value for 
decorative planting was soon appreciated, and 
trees are now died 100 feet 
2 to 3 fee 
4 
E 
с 
5 
e 
Бо 
SEES 
@ 
= 
2 
Ф 
2. 
E 
2 
e 
Near a a Douglas Fir planted the same 
iime was the same Деш рш, sae Ew in 
irth. bes n Great B 
r The & plantat ritain 
are probabl Di. i “к че агг 
There аге two іп ен the trees аге now non 
als. | The ti 
h and growing rapidly. 
western side of Scotland is caer lias 
are hee carried out under the worst кндн 
conditions with this ang a few other tree. A: 
our, on the М of Loch rae: 
vation of 1,269 f я rye зэ ve sea level, Sir p 
Stirling Mason is experimenting n this ti 
Wa) OTHER “PLANTS GROWING ON A DRY WALL. 
in very poor, 
t and sour peaty soil, in a dis- 
trict. where фе 
wing season is short, severe 
and Octo 
are cry a t to ish t 
by ondinary. tia Ee желш ы? failed, bat on 
ado opting the plan of opening drains at frequent 
son and Bastin trees on raised 
sev species are growing well, one of jn 
mo st sa Bereni ze ng the Sitka Spruce, the 
young trees adding from 12 to 18 inches to their 
height each yea 
va pire qn these гло er tka Spruce 
sed largely 
Miri ca ina single sea 
ticular trees were inj bee by 
having their. to i 
lay in the plantation oodd too nai 
а good w зб break.” Elsewher: 
where th 
Pss nough for the centre trees 
the ME A afforded by the o 
Its. t is extremely, do ubtfal, however, 
whether such rapid growth as that mentioned 
above is an advantage, for the timber from‘ such 
{Apri 12, 1919. 
rees is usually weaker than that of normal 
аг 
or The Sitka Spruce is liable to attacks from the 
= beg е i Aphis, (Chermes e eni ри ally 
whe rowing in unsatisfac es onditions 
дав. as av dry soil or or impure 
er 
ысы ете. Ой small trees it is possible to 
umen "this pest by spraying the br а once 
every twelve days during May and early June 
with a paraffin wash, but it is m 
to avoid attacks 
the atmosphere is fairly free 
the climatic and soil conditions are mois 
ior planting under forest conditions the 
should be placed in permanent 
9 to 15 inches high. W. D. 
oung даба 
ен when from 
ORCHID NOTES AND GLEANINGS. 
ODONTOGLOSSUM HUMEANUM AND 
О. ASPERSUM. 
remarks that m 
dontoglossum 
че umeanum is based only on conjecture. This 
is not so. It was based on an examination of all 
he facts available, including fl s from two 
different plants sent to Kew by Mr. O’Brien 
himself in April. 1889, with the name 0. 
Humeanum (carefully recorded in inverted 
ommas at the е), and two more receive 
from him thr ars later hose flowers agree 
with the seedling rais sed. artificially from O 
macul x ossii, as also do others recently 
Susi . Humeanum. сев has never 
oen about the parentage of O. asper- 
sur ання was as Clearly stated in ЧОТ; E 
original note as in my own recent one, 
һе 1 
which 
refore “ tends to confuse’ nothi is 1 
ea t r 
5 і ha ed ec V. parentage of 
Humeanum i When the plant was 
ured in Reichenbach’ soon er Reichen 
bach's p Данк , it was remarked by 
Messrs. : “ "H neanum is universall 
considered - © ie a natural hybrid between O 
and O. cordatum, but a c 
the shape and structure Pt is flow 
uar fius a ‚ге is less of О. 
wn b gTOW 
Rossii, and the rather scanty evidence on the sub- 
ject. indicates both , lower pi iren ar a station 
further south. R. A. Rolfe. 
THE BULB GARDEN. 
УХ LANTHUS IMPERATI. 
page 1 
to pid (re mur ced is kno 
as ‘Heme ie: 
that n 
ar 
е claim of the plank illus- 
mpera s by no means 
К on 
G. Impera a as first described by Be rtoloni i 
his Flora Italica, vol. iv., p. 5, which was ie 
l1 abou t 1833. Ber toloni з ae 
rum "T 
1600. 
sage 
Naples d бе bulb that Clusius 
169 as Leucoium ba 
co but a careful 
CIT grate shows that 
Snow ee pcm nivalis, one of whi 
nna from В; 
Ttalian pharmacist, from Naples in the 
um - = Ts oso Se Ио т т ш AM AU E. MM. ШШ О а Ша м-на э à ш ш ND ш = рона A gp р ptit 
