Ij 
Cd =» 
AN ENCYCLOPAEDIA OF HORTICULTURE. 
\ 
488 
Dipsacese—continued. 
in heads, surrounded by 
an involucre; calyx limb supe- 
= rior, cup-shaped, entire, lobed, or eiliate, membranous, 
. sometimes surrounded by a separate involucel; corolla 
funnel-shaped or cylindric, often curved; lobes four or 
five, obtuse, imbricate in bud; stamens four, inserted on 
the corolla tube. Leaves opposite or rarely verticillate, 
exstipulate. There are five known genera, including 
Cephalaria, Dipsacus, and Scabiosa, and about 125 species. 
DIPSACUS (the Greek name used by Dioscorides, 
from dipsao, to thirst; probably in consequence of the 
connate leaves holding water). 'Teazel. ORD. Dipsacee. 
Erect, pilose, or prickly, hardy biennial herbs. Flower- 
heads terminal, oblong-ovate or roundish. Leaves oppo- 
site, usually connate at the base, toothed or jagged. 
These singular plants are best suited for the wild garden, 
. or rough parts of the flower border. They thrive in 
. almost any ordinary garden soil and may be easily raised 
from seed. There are about twelve Species, the under- 
mentioned being only those that are worth growing. 
. D. Fullonum (fuller's) Fuller’s Teazel. Л.-Һеайз whitish, with 
: =. purple anthers; leaves of involucre spreading, shorter 
han the ovoid heads. July. l.. connate at the base, oblong- 
lanceolate, serrated ; upper ones entire. Stem Lt h. 4ft. to 
6ft. The specific name of the plant is derived from the fact that 
ts heads are used by the fuller in dressing cloth. This is 
believed by some to be but a cultivated variety of D. sylvestris, 
1 differing only in the scales of the receptacle being hooked at the 
k extremity. 
— D., laciniatus (cut-leaved). /l-heads, corollas whitish ; anthers 
= reddish; leaves of involucre sli htly erect, stiffish, usually shorter 
than the ovoid head. July. J. connate at the base, sinuately Jagged, 
and the lobes sinuately toothed ; downy beneath. Stem prickly. 
h. 3ft. to 5ft. Europe ia, } 
and Siberia, 1683. " 
D. sylvestris (wood) Common Teazel. -heads pale lilac; 
inaves “of involucre Нехо, weak, Ма ег d the MAE 
eads of flowers. - ¢ connate at the base, ova ceolate, 
uminated, toothed. Stem prickly. A. 6ft. Europe (Britain). 
to Ruellia (which see). 
 DIPTEROCARPEZ. An order of resin-bearing 
trees, all the species of which are found in the tropies of 
the Old World. Flowers often sweet-scented, disposed in 
axillary panicles. Leaves alternate, involute ; stipules 
eonvolute. There are a dozen genera, perhaps the best 
known being Dipterocarpus and Dryobalanops. 
 DIPTEROUS. Having two wing-like processes. 
DIPTERYX (from dis, double, and pleryz, a wing; 
in reference to the two upper lobes of the calyx, which 
appear like two wings). Tonquin Bean. Syn. Baryosma. 
ORD. Leguminose. А genus of about eight species of 
Stove evergreen trees. Flowers violet or rose, disposed in 
rminal panicles. Leaves opposite or alternate, abruptly 
Pinnate. They thrive in rich, rough, loamy soil. Cuttings 
will strike if inserted in sand, and a hand glass placed 
Over them, in a moist heat. None are of any importance, 
except from an economic standpoint; they are useless as 
: - DK e, dashed with viol 
E n oro E 
ot e КО un Ка ‘or Tonquin Beans, well known as 
а grateful scent to snuff. | ; 
 DIRCA (from dirke, a fountain; referring to the plant 
Erowing in moist places).  ORp. Thymelew.. A genus 
ofa couple of species of hardy, deciduous, branchy shrubs, 
With the habit of miniature trees. Both are natives of 
‘orth America, and the one in cultivation thrives well in 
^ moist peaty soil. Increased readily by imported seeds, 
ч by layers - 
^. palustris * d 5 ellowish, terminal, 
_ Preceding the peteng M сна dig oblong, kenne 
Pale green, villous beneath. А. 2ft. (о 56. 1750. (B. R. 292.) 
DISA (derivation unknown; probably a native name). 
b. idem. A genus of about fifty species of ter- 
orchids, natives of tropical and South Africa, 
е Mascarene Islands. All are very pretty and 
th 
This genus is now referred | 
Disa—continued. 
interesting, but the number worth cultivating is somewhat 
limited. Of these, the best is D. grandiflora, sometimes 
known as the Flower of the Gods. Its culture, though 
considered by many to be difficult, is comparatively easy, 
where proper means and site are employed. With regard 
to its native surroundings, it should be borne in mind 
that the streams, &o., upon or near the margins of which 
it grows, are water gorges during some portion of the 
winter months, and occasionally very dry in the summer. 
The plants should be kept quite cool in winter, but 
not allowed to become too dry at any time. By the end 
of February, more water should be given; and from April 
until the flower-spikes are formed, too great a quantity 
cannot well bé applied. D. grandiflora is one of the most 
beautiful of cool orchids, sueceeding in an admixture of 
peat and sphagnum. The plants should be somewhat 
elevated in potting. Careful ventilation, avoiding draughts, 
is essential, eps 
With regard to the best method of raising D. grandiflora 
from seed, the Rev. F. Tymons, of Dublin, says: “The 
seed should be sown as soon as it is ripe; but if that does 
not happen till late in the autumn, it would be safer to — 
postpone the sowing until the following September, or the 
last week of August. There are two methods of sowing 
the seed, each of which has its advocates. One of them 
consists in sowing on living sphagnum, in a pot or pan. 
The moss must always be kept moist, which may be 
effected by constant and gentle dewings, as the danger of 
regular watering, as ordinarily understood, is that the 
seed would be washed down too deeply. The other plan 
is to sow on a sod of turf... . or hard peat .... pem 
mean the peat as prepared for fuel. Let it be well soaked _ 
in water, and the seed sown thickly on its upper surface. 
Cover all with a bell glass, and place it in a cool, damp, 
and shady place. The turf must never become dry, but — 
the spraying of water must be of the gentlest description. - 
A good plan for watering very fine seed is to dip a stiff- 
haired brush in water, and to draw the hand briskly 
against it, at such a distance as that only the finest dew . 
reaches the seed. When the seedlings appear, they must 
have more air. As soon as they can be handled, they 
should be pricked off into small pans, or into pots, not 
less than 4in. in diameter. The compost for the seedlings, 
for the first two years, should be somewhat similar to that — 
for mature plants, only that the peat should be con- 
siderably finer for an inch or two on the surface, and à · 
much larger proportion of silver sand is necessary. Th 
after-treatment, as regards ventilation, situation, and 
water, is similar to that for established plants." The 
same writer warns “persons whose stock is limited io. с 
plant or two, not to 
be too anxious for seed. One 
on а healthy i 
plant is quite sufficient, "o 
the autumn growth and recovery, after bour of 
flowering.” em x ые Ын ч с 
D. cornuta (horned-flowered). fl. green, white, and purple, _ 
oderately large ; spi to 6in. long, many-flowel a Ms og 
dissimilar. pe x чыке: i,t long | and falcate, with & 
broad auricle at the base; small, spathulate, 
large black velvety tee Docume 1. lanceolate, erect or 
Т 
marked with г eu le. Stem green, 
with red, leafy to the summit. Cape of Good Hope, 1843. (B.M. 
D. grandiflora (large-flowered).* fi. light rose, scarlet, and gold. 
June and July. l stem-clasping, alternate, dark green, shining. 
Stems 2ft. ќо ft. high, four or five-flowered. Table Mountain, 
1825. (B. M. 4073.) nete ce 
d x. range - scarlet; lip a lighter 
go 874. Re. Feb. 
D. g. Barrellii (Barrell’s).* i s 
nade of the e colour, with crimson veins. 1 
1882.) 
. g. Superba (superb) ji. bright scarlet and crimson, veined 
» E pink, vy c н June and July. Stems lift. 
to 2ft. high, two to eight-flowered. A very handsome form. (Gn., 
Feb. 1882.) 
D- macrantha (large-flowered). A garden synonym of D. mega- 
ceras, : é Ў 
D. megaceras (great-horned).* ji. white, blotched inside with pale 
wer ones sheathi рн paa Шм» p o 
