1900 SUPPLEMENT—RECENT INTRODUCTIONS, 
&E.> 320 
Dichorisandra—continued. 
acuminate, woolly-villous on the margins; petioles jin. long. 
Branches lft. to 14ft. long, simple, pilose. Brazil, 1847. Syn. 
D. ovata (P. M. B. xv., t. 5). 
D. gracilis (slender). 1. blue; petals obtuse ; raceme l14in. long, 
edunculate, pubescent. August. 2. 6in. long, lsin. broad, 
lanceolate, very long-acuminate, cuneate at base, glabrous, 
Stem slender, almost simple, glabrous. h.14ft. Brazil. 
D. mosaica (mosaic). The correct name of D. musaica. 
D. m. gigantea (gigantic). 7. broadly ovate, Yin. long, Sin. 
broad, very deep green, with lighter-coloured bars. Stems 2ft. 
high. 1892. A fine variety. 
D._ ovalifolia (oval-leaved). (#. purple; panicle 2sin. long, 
divaricately branched ; bracts 24in. long. May. J. Sin. long, 24in. 
broad, sessile, oval, acuminate, glabrous, the upper ones oblong- 
lanceolate. Branches 14ft. long. Panama, &c., 1846. 
D. ovata (ovate). A synonym of D. Gaudichaudiana. 
D. pubescens (downy). jl. blue; petals elliptic, with a short, 
sharp point ; raceme 14in. to 4in. long. 7. 34in. long, 1iin. broad, 
lanceolate or oblong-lanceolate, acuminate, slightly petiolate ; 
sheath pilose-pubescent. Rio Janeiro. 
D. p. tzniensis. ji. blue and white, in short, terminal, spike- 
like panicles. 7. lanceolate, acuminate, rich green, striped with 
white. Brazil, 1888. (G. C. 1888, iii., p. 557, f. 75.) Also called 
talmiensis. 
D. undata is synonymous with D. mosaica (SYN. D. musaica). 
pe CT OREMA. Included under Mirbelia (which 
see). 
DICHROA (from dis, two, and chroa, a colour; in 
allusion to the two colours of the flowers). Syns. Adamia, 
Cyanitis. Orv. Savifrageer. A monotypic genus, 
consisting of the three forms described on p. 22, Vol. L., 
under Adamia, all of which are now regarded as 
forms of one species, viz., D. febrifuga. 
DICHROMA (of Cavanilles). 
(which see). 
DICHROSTACHYS. Cailliea is synonymous with 
this genus. 
DICHROTRICHIUM. Syn. Tromsdorfia (of R. 
Brown). This genus embraces five species, four of which 
are found in the Malayan Archipelago and one in Khasya. 
DICKSONIA. Including Patania and Leptopleura. 
About forty species are here included. The majority 
of Dicksonias only require cool treatment, most of the 
arborescent kinds being found growing in valleys and 
in deep, shaded ravines, and in countries where some 
of them occasionally have their fronds heayily loaded 
with snow. D. antarctica thrives when planted outside in 
sheltered spots in different parts of England, Wales, and 
Treland. 
When grown in pots Dicksonias must have water to their 
roots all the year round. When not planted ont, all Tree- 
Ferns thrive best in pots or tubs in which only 3in. to 4in. 
of soil round the trunks are allowed. The best compost is 
fibrous peat, two parts ; fibrous loam, one part; and coarse 
silyer-sand, one part. During summer the trunks of Dick- 
sonias should be thoroughly watered twice a day, decreasing 
the supply as the season advances, and in winter just 
keeping them moist. They are usually propagated from 
spores, but the rhizomatous species may be divided in 
March or April. 
To those described on pp. 467-8, Vol. I., the following 
should be added: 
D. apiifolia (Parsley-leaved).* fronds somewhat rigid, bright 
een, tripinnate; lower pinne lft. to lft. long, 6in. to Sin. 
road; pinnules long and narrow, their lower segments, with 
sharply-toothed lobes, about lin. long and 4in. broad. sori two 
to twelve to a segment, placed at the bottom of the notches of 
the lobes; involucre cup-shaped, nearly circular. Andes of 
Ecuador and Peru. A strong-growing, stove species. SYNS. 
D. tenera (of gardens), Patania apiifolia. 
D. Billardieri (Labillardiére’s). 
(RB. G. 1889, p. 637, f. 90.) 
D. Blumei (Blume’s). A synonym of D. chrysotricha. 
D.cicutaria. Among the various forms of this in cultivation are 
D. dissecta (of Sieber), with barren segments more wedge-shaped 
than in the type, and serrated above; D. erosa, with larger, more 
hairy, and less deeply-lobed pinnules; D. c. incisa, with fronds 
more compound; and D. tenera (of Martius), of a more 
membranous texture. 
D. davallioides Youn (Young’s). fronds large, minutely 
sub-divided. See Fig. ee = ais 
Vol. V. 
A synonym of Ourisia 
A synonym of D. antarclica. 
Dicksonia—continued. 
D. Deplanchei (Deplanche’s). fronds ample, rigid, coriaceous, 
smooth and uniformly green on both sides. New Caledonia. A 
stove, arborescent species, of little decorative value. 
D. dissecta (of Sieber). 
D. erosa (bitten). A form of D. cicutaria. 
D. Lathami (Latham’s).* fronds tripinnate, narrow-oblong, dark 
green, coriaceous, 14ft. to 15ft. long; pinne sessile, oblong- 
lanceolate, acuminate, 14ft. to 2ft. long, 6in. to 8in. broad, with 
close-set, sessile, lanceolate, acute pinnules ; pinnulets oblong, 
obtuse, more or less lobed or crenulate. 1886. A noble, stove, 
evergreen Tree Fern, supposed to be a hybrid between 
D. antarctica and D. arborescens. 
D. magnifica (magnificent), A synonym of D. chrysotricha. 
D. obtusifolia (having obtuse segments). 
adiantoides. 
D. princeps (foremost), of gardens. A synonym of Cyathca 
insignis. 
D. scabra (rough). *rhiz. wide-creeping. sti. about lft. long, 
rough and very hairy below. fronds triangular or hastate, 
bipinnate, 20in. to 30in. long, 6in. to 2ft. broad ; lower pinnz 
hastate, 4in. to 8in. long, their pinnules quite distinct, the lower 
ones cut down nearly to the stalk into pinnatifid segments, hairy 
beneath. sori two to six to the lower segments ; involucre cup- 
Stove. Syns. Patania scabra, Sitolobium 
A form of D. cieutaria. 
A synonym of D. 
shaped. India, &e. 
strigosum (of gardens). 
D. tenera (tender), of Martius. 
D. tenera, of gardens. 
D. gracilis and D. Herberti are also in cultivation at Kew. 
A form of D. cicutaria. 
A synonym of D. apiifolia. 
Fic. 343. DICKSONIA DAVALLIOIDES YOUNGII. 
DICLINOTRYS. 
(which see). 
DICLIPTERA SCORPIOIDES (of gardens). A 
synonym of Jacobinia Mohintli (which see). 
DICRYPTA. 
A synonym of Chamelirium 
Included under Maxillaria (which 
see). The correct name of D. Baweri is M. crassifolia. 
DICTYOCALYX. A synonym of Cacabus (which 
see). 
DICTYOCARYUM (from dictyon, network, and 
karyon, a nut; in reference to the fragile endocarp). 
Orp. Palme. ~A small genus (about four species) of 
tall, unarmed, stove Palms, allied to Iriartea, natives of 
Colombia and Brazil. Flowers yellow, arranged as in 
Cyphophenix ; spadices at first cone-like, elongated, after- 
wards fasciculately branched; spathes six or seven, 
deciduous. Fruit ovoid or sub-globose; endocarp mem- 
branous, fragile. Leaves few, equally pinnatisect ; seg- 
ments obliquely flabellate, cuneate, cut into eight to ten 
narrow divisions. D. glaucescens and D. Wallisiit are, or 
have been, in cultivation on the Continent. 
2T 
