1900 SUPPLEMENT—RECENT INTRODUCTIONS, 
&C. 325 
DIPLOGLOSSIS. A synonym of Cynanchum 
(which see). 
DIPLOGLOTTIS (from diploos, double, and glottis, a 
tongue; in reference to the divided inner scale of the 
petals). Orp. Sapindacew. A monotypic genus. The 
species is a greenhouse tree, closely allied to Cupania 
(which see for culture). 
D. Cunninghamii (Cunningham's). jl. green, numerous, in 
ample, axillary panicles. May. J. sometimes 2ft. long ; leaflets 
eight to twelve, opposite or irregularly alternate, oblong-elliptic 
to ovate-lanceolate, 6in. to 12in. long, glabrous above, pubescent 
beneath. A. 30ft. to 40ft. Sub-tropical Australia, 1825. Syn. 
Cupania Cunninghamii (B. M. 4470). 
DIPLONEMA. A synonym of Enuclea (which see). 
DIPLONYX. A synonym of Wistaria (which see). 
DIPLOPAPPUS CHRYSOPHYLLUS. A garden 
name for Cassinia fulvida (which see). 
DIPLOPELTIS (from diploos, double, and pelte, a 
shield ; in allusion to the double frnit). Orb. Sapindacez. 
A small genus (three species) of glandular-pubescent, 
greenhonse shrubs or under-shrubs, natives of South-west 
Australia. Flowers white, pink, or violet, large for the 
order, polygamous; sepals five: petals four, the place of 
the fifth vacant, clawed; stamens eight ; panicles terminal, 
with scorpioid racemes. Leaves alternate, entire or pin- 
natifid. D. Huegelii, the only species introduced, thrives 
in a compost of loam and peat, and may be increased by 
cuttings, inserted in heat. 
D. Huegelii (Huegel’s). 1. pink and white, racemose along the 
simple branches of a terminal panicle. July. Jl. either 
undivided and entire, tcothed, or pinnatifid. h. lft. to 3ft. 1837. 
(B. R. 1839, t. 69.) 
DIPLOPHYLLUM. 
(which see). 
DIPLOPRORA (from diploos, double, and prora, a 
front). Orb. Orchidex. A monotypic genus. The species, 
D. Championi (Syn. Cottonia Championi), is a stove or 
greenhouse, epiphytal Orchid, native of India and Hong 
Kong. It has a few small, yellow flowers, with a rosy- 
tinged lip, ovate or oblong distichous leayes, and a nearly 
simple stem. The plant is in the Kew Collection, but is 
not in general cultivation. : 
DIPLORA (from diploos, double, and lora, thongs; in 
allusion to the strap-shaped valves of the involucre). ORD. 
Filices. A monotypie genus. The species is a stove Fern, 
in habit resembling Aspleniwm vitteforme. For culture, see 
Asplenium. 
D. integrifolia (entire-leaved). shiz. wide-creeping, green, 
woody. sti. naked, greenish, scarcely lin. long, articulated at 
base. fronds Yin. to 10in. long, seldom exceeding 4in. in breadth, 
entire, linear-ligulate, parchment-like, narrowed to both ends. 
sori conspicuous, {in. to 4in. long, fifty to sixty on each side of the 
midrib. Solomon Islands. 
DIPLOSASTERA. 
(which see). 
DIPLOSIS. A genus of very minute insects belonging 
to the order Diptera, containing several species more or less 
hurtful in gardens. D. pyrivora, or Pear Midge (which 
see) is the most important. Another species is found upon 
Populus (which see), and yet another calling for mention is 
the Ash Midge (D. botularia or D. fravini). This latter is 
responsible for a premature yellowing of the foliage of 
Ash, as well as for distorting it by thickening it in the 
vicinity of the midrib and folding over the sides of the 
leaves, so that they look like a pod. The larve are reddish- 
yellow, and when ready to pupate they escape through a 
crack in the gall and fall to the ground. All leaves affected 
in the way suggested should be collected and burned. 
DIPLOTHEMIUM. Syn. Allagoptera. Five species, 
all Brazilian, form this genus, which is closely allied to 
Cocos. To those described on p. 482, Vol. 1., the following 
should be added : 
D. littorale (shore-loving). /., spadices 2ft. to 3ft. long; outer 
spathe 3in. to 4in. long; inner one lft. to 2ft. long, deeply sul- 
cate, slightly fuscous-tomentose. JZ. nearly 3ft. long, almost 
straight ; pinne fifty or more on each side, rigid, approximating 
in twos or fours, linear, acuminate. Brazil, &c. Plant stemless. 
(B. M. 4681.) 
Included under Veronica 
Included under Coreopsis 
DIPLYCOSIA (from diploos, double, and kos, covering ; 
two connate bractioles form a second covering to the flower). 
Syns. Amphicalyx, Diplecosia. Orv. Ericacew. A genus 
consisting of seven species of greenhouse, epiphytal shrubs, 
all Malayan, and only differing from Gaultheria (which 
see for culture) in the anther-cells having no apical horns. 
Only one species has been introduced. 
D. discolor (two-coloured). /. in pubescent racemes, 2in. long ; 
corolla white, the mouth red within, sin. by gin., ovoid. 7. ovate 
or elliptic, 2in. long, narrowed at both ends, serrated, very white 
beneath ; petioles din. long. Bhotan, 1858. Habit of Gaultheria 
Sragrantissima. SYN. Gaultheria discolor (B. H. 1858, p. 193, 
t. 52, f. 2; B. M. 5034). 
_ DIPODIUM (from dis, twice, and pous, podos, a foot ; 
in allusion to the candicles on the pollen masses). Orb. 
Orchidee. Dipodium is the correct name of the genus 
described on pp. 190-1, Vol. IV., as Wailesia. The 
following species should be added: 
D. paludosum (swamp-loving). jl. creamy-white, blotched with 
purple, sweet-scented, 14in. across, ten to twelve in a raceme; 
sepals and petals reflexed ; lip lanceolate, acute, with a villous 
ridge from the base to the cuspidate tip, the side lobes reduced 
to small teeth. 2. ensiform, erect. Stem lft. to 2ft. high; 
peduncle 1ft. to 2ft. high ; both erect. Malacca (in swamps), 1888. 
DIPOSIS (from dis, twice, and pois, a husband; the 
umbellules are usually three-flowered, and comprise one 
fertile, sub-sessile flower and two sterile pedicellate ones). 
Orv. Umbellifere. A monotypic genus: the species, 
D. Bulbocastanum, introduced in 1872, is a greenhouse or 
half-hardy tuberous plant of more botanical than horticul- 
tural interest. 
DIPSACOZAMIA. 
(which see). 
DIPSEUDOCHORION. A synonym of Limno- 
phyton (which see). 
DIPTERACANTHUS SCANDENS. A synonym 
of Asystasia scandens (which see). 
DIPTERIS. See Polypodium. 
DIPTERYX includes Comarouna. 
DIRCZA. Included under Gesnera (which see). 
DISA. Flowers variously disposed, large or small ; 
sepals much larger than the petals, the dorsal one erect, 
hooded, and haying a spur; petals small, polymorphous ; 
lip small, spurless, linear, acute, projecting forward ; 
column short, rather thick ; bracts usually shorter than the 
flowers. Stems sometimes tall and leafy, sometimes slender 
and few-leayed or with the leaves reduced to sheathing 
bracts. The utility of this lovely genus has been con- 
siderably increased of late years by the successful intro- 
duction of several beautiful hybrids. These hybrids have 
proved far more amenable to culture than the imported 
species, and are often found to thrive well where failure 
has followed every endeavour in attempting the culture of 
the African kinds. They are worthy of attention, and 
should be fully represented for grouping with other Orchids 
at exhibitions ; while for cut-flower purposes these hybrid 
Disas will be found most useful. 
Disas are not so extensively cultivated as their merits 
deserve. No doubt the cause of this is the repeated 
failures that have been experienced in many collections to 
produce satisfactory results from D. grandiflora (Fig. 346). 
The cause of such failure is oftener due to unsuitable 
loeality than to lack of ability on the part of the cultivator. 
We have known cases where, without any exceptional 
attention, these plants have been everything that could be 
desired. In one instance the plants were placed in a 
Heathhouse, and we had the pleasure of seeing them in 
flower recently after a lapse of sixteen years, and their 
condition was eminently satisfactory. They had the 
full benefit of free ventilation throughout the year, and, 
except to exclude frost, no fire heat was used. During the 
growing season the plants are freely syringed overhead, and 
a liberal supply of moisture is afforded at the roots. The 
shading used is only sufficient to prevent scorching of the 
foliage during the hottest parts of the day. The potting 
compost consists of good fibrons peat, lying sphagnum, and 
a liberal proportion of rough sand and broken pot- 
sherds intermixed. Ample drainage is also given. 
There are instances of D. grandiflora having been grown 
A synonym of Ceratozamia 
