472 
THE DICTIONARY OF GARDENING, 
Didymochlena—continued. 
D. lunulata (crescent-like).* cau. erect, sub-arborescent. fronds 
densely tufted, 4ft. to 6ft. long, bipinnate; pinnules 3in. to 
lin. long, dimidiate, sub-quadrangular, entire, or slightly sinu- 
ated. sori two to six to a pinnule. Tropical America. SYN. 
Aspidium truncatulum. 
D. polycarpa (many-fruited). cau. erect; rachis and lower sur- 
face villose. fronds tufted, short, 2ft. to 3ft. long, lft. to 13. 
broad, simply pinnate; pinnz close, very numerous, spreading, 
dwindling down below to mere auricles. sori s , close, 
ultimately confluent. Malaya. SYNS. Mesochlena polycarpa and 
Nephrodium javanicum. 
D. p. asplenioides (Asplenium-like) is a hairy form, with 
narrower pinnz and short oblong-deltoid lobes. 
DIDYMOSPERMA (from didymos, double, and 
sperma, a seed; in allusion to the (frequently) two-seeded 
Didymosperma—continued. 
D. tremulum (tremulous). Z., segments long, flat, firm, linear, 
spinuloso-dentate, bifid at the apex ; laciniæ unequal or panduri- 
form. Stem 3ft. to 4ft. high. Philippine Islands. 
DIDYMOUS. Two; united, or in pairs. 
DIDYNAMOUS. When (usually in a bilabiate flower) 
there are four stamens in two pairs, those of опе pair 
longer than those of the other. 
DIEFFENBACHIA (named in honour of Dr. Dieffen- 
bach, a German botanist). ORD. Aroidew (Aracew). A 
genus of noble erect stove evergreen perennials, with often 
handsomely variegated foliage. Leaves usually green, 
sometimes irregularly marked with white or yellowish spots, 
oblong, with numerous veins diverging from the midrib, 
mits). ORD. Palme. А genus of unarmed stove palms. 
vers monccious in the same or separate spadices ; 
with free or connate imbricate sepals; female with 
ate petals; spadix flowering amongst the leaves; 
‘usually many. For culture, see Areca, 
nu: (атат), е 1. about 2%. long; petiole short, roundish : 
,Miernate or su osite, cuneate towards the base. 
b bed, toothed and spinuloso-serrate" 
shape, generally bilobed, striately 
| eu | ене beneath. Assam - Khasia 
nana. 
in 
Fic. 665. DIEFFENBACHIA NOBILIS (see page 474). 
and — 
Stems fleshy, from 6ft. to 8ft. long. The poisonous 
very acrid juice of this genus causes intense palm, 
no part of the plant should, under any consideration, 
placed in the mouth. For culture, see Caladium. : 
with 
D. amcena (pleasing).* 1. deep green, oblong-acute, marked 4 
very ponme h 4 poo Li blotches of white мы pale yellow, os 
аге well defined on both surfaces. Tropical America, 
Very effective. See page 169, Fig. 660, for which we are indebted 
to Mr. Wm. Bull. ; with t 
D. antioquiensis (Oum wow 1. deep green, blotched WIA- 
yellow, Columbia, 1875. (L Н. п, s. 192.) 4 LET 
Baraquin's).* Z. bright light green, irregulany 
LI | geret with white, 
біп. to 12in. long, 3in. to біп. in У 
midrib pure white; petioles 
