SUPPLEMENT. 537 
DIEFFENBACHIA. According to Bentham and 
Hooker, there are only about half-a-dozen true species of 
this genus, all natives of tropical America. To the 
species and garden forms described on pp. 472-5, Vol. I., 
the following should now be added: 
D. Jenmani (Jenman’s). /. long and narrow, oblong-lanceo- 
late, pea-green, with oblique, elongated blotches parallel with 
the primary veins, extending from the centre nearly to the 
margin, and mingled with smaller blotches over the surface. 
British Guiana, 1884. (R. G. 1884, 365.) 
DIMORPHANTHUS. To the species described on 
p. 477, Vol. I., the following variety should now be added: 
D. mandschuricus foliis-variegatis (variegated-leaved). 
1. green inthe middle, the margins white. 1886. A handsome 
variety. (I. H. 1886, 609.) 
DIMORPHOTHECA. To the species described on 
pp. 477-8, Vol. I., the following should now be added: 
D. fruticosa (shrubby). /.-ieads 14in. in diameter, pedunculate ; 
ray florets whitish above and brownish beneath. Summer. 
l. obovate. Stems procumbent. 1887. Perennial. 
DIOSCOREA. According to herbarium specimens, 
there are 150 known species of this genus, distributed over 
the whole area of the natural order. To those described 
on p. 478, Vol. I., the following should now be added: 
D. crinita (hairy). . white ; racemes very numerous, pendulous, 
solitary or several in the axils, 2in. to 34in. long, forming a 
panicle at the ends of the branches. September. J. long- 
petiolate; leaflets five, 2in. to 3in. long, petiolulate, elliptic- 
lanceolate or oblanceolate, obtuse, acute or acuminate, with 
a long, bristly mucro. Natal, 1884. A slender, graceful, 
pubescent climber, forming an elegant pot plant when trained 
ona balloon trellis. (B. M. 6804.) 
D. hybrida (hybrid). . greenish-yellow, in numerous axillary 
clusters. J. sub-cordate, attenuated. Tuber large, flat. 1883. 
This half-hardy twiner is supposed to he a hybrid between 
D. Batatas and Tamus communis. (R. H. 1882, p. 379.) 
D. pyrenaica (Pyrenean). jl. solitary, rather remote, shortly 
pedicellate ; perianth turbinate-campanulate, with oblong seg- 
ments ; male racemes axillary, twin or ternate, simple and rarely 
somewhat branched. July and August. Jl. sparse, deeply cor- 
date-ovate, acute, mucronate. Stems one to four, slender, 
flexuous, branched. Underground caudex tuberous, about the 
size of a nut. f. about din. Pyrenees. Plant herbaceous, 
glabrous. 
DIOSPYROS. To the species described on p. 479, 
Vol. I., the following species and varieties should now be 
added: 
D. Aurantium (orange). A variety of D. Kaki. 
D. Berti (Bert’s). A variety of D. Kaki. 
D. coronaria (crowned). /l., calyx spreading or slightly reflexed 
in fruit. fr. orange-red, sub-globose, lin. in diameter. J. large, 
coriaceous, Japan, 1885, A small, hardy tree. 
D. elliptica (elliptic), A variety of D. Kaki. 
D. Kaki Aurantium (orange). /r. light orange-yellow, apple- 
shaped, depressed; calyx very large, with large, rhomboidal, 
jagged segments. (R. H. 1887, p. 349, f. 2.) 
D. K. Berti (Bert's). /r. beautiful reddish-orange-yellow, 
depressed apple-shaped, large, smooth; basilar cavity broad and 
deep; summit umbilicate, with a narrow cayity. (R. H. 1887, 
p. 349, f. 3.) 
D. K. elliptica (elliptic). /r. beautiful, shining orange-yellow, 
regularly elliptical, very smooth; basilar cavity very small ; 
apical mucro scarcely visible. (R. H. 1887, p. 349, f. 4.) 
D. Sahuti gallica (Sahut’s, French). fr. reddish-yellow and 
golden, covered with a silvery bloom, apple-shaped, acuminate at 
summit; surface smooth and rounded; basilar cavity almost 
absent ; umbilical cavity absent and sp laced by a slight, charac- 
teristic, angular elevation. (R. H. 1887, p. 349, f. 5.) 
D. Wiseneri (Wisener’s). /., calyx lobes having a short, central 
lobe. fr. egg-shaped, obscurely ribbed. J. elongate-ovate, 
shortly attenuated and rounded at apex. Japan, 1887. Hardy. 
Probably a variety of D. Kaki. 
DISA. To the species described on pp. 483-4, Vol. I., 
the following should now be added: 
D. atropurpurea (dark-purple). #. rich purplish-lake, solitary, 
on slender peduncles din. to 4in. high ; dorsal sepal hooded, with 
a very short, knob-like spur, the lateral ones elliptic-lanceolate, 
acute ; petals auricled at base, bifid at apex ; lip with a distinct 
stalk jin. long, and a cordate, acuminate, wavy-margined blade, 
haying two or three teeth on each side. J/. linear, Grass-like. 
South Africa, 1885. A beautiful little plant. (B. M. 6891.) 
D. racemosa (racemose), jl. light purple, marked white, dark 
purple, and green ; middle sepal rhombic, the lateral ones oblong ; 
petals cuneate-triangular, serrated on the upper margin, with 
Vol. LV. 
Disa—continued. 
inflexed apex ; lip rhombic-lanceolate, narrow, small ; inflorescence 
one-sided, about six-flowered. 1887. (B. M. 7021.) Syn. 
D. secunda. 
D. secunda (side-flowering). A synonym of D, racemosa. 
DISCANTHUS. A synonym of Cyclanthus (which 
see). 
DISPORUM. To the species described on pp. 484-5, 
Vol. I., the following should now be added: 
D. Leschenaultianum (Leschenault’'s). /. white, jin. to jin. 
in diameter, sub-campanulate, two to five together in the upper- 
most axils ; segments oblong or linear-oblong. Spring. J. rather 
rigid, lin. to 4in. long, lin. to 2in. broad, narrowed to distinct 
petioles, varying from elliptic-lanceolate to almost orbicular, 
cuspidate, acute, acuminate, or almost caudate. Ah. lft. to 2ft. 
Mountains of South Indi: and Ceylon. (B. M. 6935.) 
DODECATHEON. To the species described on 
pp. 485-6, Vol. I., the following should now be added: 
D. Meadia splendidum (splendid). jl. deep crimson, with a 
yellow ring at the orifice of the reflexed corolla; scape four to 
ten-flowered. Spring. 
DOLICHODERIA TUBIFLORA. A synonym of 
Achimenes tubiflora (which sez). 
DOODIA. The five species included in this genus are 
eunfined to the islands from Ceylon eastward to Fiji, New 
Zealand, and Australia. To those described on p. 486, 
Vol. I., the following varieties should now be added: 
D. aspera multifida (many-cleft). fronds arched, with a dense 
tassel at the apex; when young, tinted pink. Dwarf evergreen. 
D. Harryana (Harry Veitch’s). This differs from D. caudata 
(of which it is apparently a form) in being stouter, of firmer 
texture, and larger. 1884. Garden variety. 
DOUGLASIA. One species of this genus is a native 
of Central Europe ; the rest are North American. Flowers 
axillary or terminating the branchlets, solitary and sessile 
or pedicellate, sometimes fascicled or umbellate ; calyx five- 
cleft to the middle; corolla salver-shaped, the limb of five 
imbricated lobes. Leaves imbricated or clustered and 
spreading, entire. To the species described on p. 488, 
Vol. I., the following should now be added: 
D. levigata (smooth).* /l. rose-pink, pedicellate, jin. in dia- 
meter; corolla tube twice as long as the calyx, the lobes very 
broadly obovate ; involucral bracts four to six, jin. long ; peduncle 
about lin. long, erect, two to five-flowered. Spring and autumn. 
1. rosulate, sin. to jin. long, linear or oblong-lanceolate, acute 
or sub-acute. Alps of Oregon, 1886. Plant tufted. (B. M. 6996.) 
DRACZNA. To the species described on pp. 490-1, 
Vol. I., the following should now be added: 
D. floribunda (abundant-flowered). jl. greenish, cylindrical, 
above jin. Jong; panicle drooping, shortly pedunculate, Sft. to 
4ft. long, made up of fifteen to twenty drooping racemes lft. or 
more long. J. fifty to sixty, crowded in a dense rosette, lorate, 
acuminate, 3ft. to 4ft. long, Sin. to Sin. broad. Trunk 6ft. to 
8ft. high. Native country unknown. (B. M. 6447.) 
D. fragrans variegata (variegated). J. recurved, deep green, 
with a broad, central, striped variegation of yellow and pale 
yellowish-green. 1887. Syn. D. Lindeni. 
D. Lindeni (Linden’s). A synonym of D. fragrans variegata. 
D. Massangeana(Massange’s). J. broadly lanceolate, acuminate, 
dark green, with a median, whitish stripe. 1883. A variety of 
D. fragrans, closely resembling D. f. variegata. (B. H. 1881, 16.) 
D, sepiaria (hedge-loving). jl. pure white, in large panicles. 
Jr. yellow, persistent for a long time. J. upright, small, dark 
green, tufted. Fiji, 1887. An ornamental perennial. 
DRACOCEPHALUM. ‘1To the species described on 
p- 491, Vol. I., the following should now be added: 
D. imberbe (beardless). /., corolla lilac-blue, lin. long, the lips 
nearly equal ; bracts cuneate, cut, glabrous. /., radical ones long- 
petiolate, cauline ones few, shortly petiolate, all reniform, deeply 
crenate. Floriferous branches erect. fh. 6in. Siberia, 1883. 
(R. G. 1080, f. 4-5.) 
DRACONTIUM. About half-a-dozen species, all 
tropical American, are here included. To those described 
on pp. 491-2, Vol. I., the following should now be added: 
D. foecundum (fertile). jl., spathe dull brown outside, dark 
vinous-purple within, 5in. high, erect, narrowly cylindric-oblong ; 
spadix bluish-brown, lin. high, sub-sessile, erect, cylindric, 
obtuse. March. 1. solitary, produced after the flower, 4ft. to 5ft. 
in diameter, horizontal, tripartite, each segment bearing several 
pairs of drooping leaflets; petiole 6ft. high. Tubers surrounded 
by a profusion of acute bulbils, rising above the ground. British 
Guiana, 1880, (B. M. 6808.) 
DZ 
