DIEFFENBA CHI A 
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touch the stigma, on which there is usually pollen from its own sta. 
Dichaea Lindl. Orchidaceae (30). 5 sp. trop. Am. Monopodial 
creeping epiphytes with sheathing leaves. 
Dichapetalaceae = Chailletiaceae. 
Dichapetalum Thou. = Chailletia DC. 
Dichilus DC. Leguminosae (ill. 3). 3 sp. S. Afr. 
Dichondra Forst. Convolvulaceae (1. 1). 5 sp. trop., some amphicarpic. 
Dichopogon Kunth. Liliaceae (hi). 2 sp. Austr. 
Dichopsis Thw. = Palaquium Blanco. 
Dichorisandra Mikan. Commelinaceae. 30 sp. trop. Am. Infl. 
racemose (cf order); its branches often pierce the leaf- sheath. 
Dichroa Lour. Saxifragaceae (ill). 1 sp. Himal. and China to Java. 
Dichromena Michx. Cyperaceae (1). 8 sp. Am. 
Dichrostachys Wight et Arn. Leguminosae (1. 4). 7 sp. trop. As., 
Afr., Austr. Stipules often thorny. Upper firs, of infl. $, yellow, 
lower neuter and white, rose, or purple. 
Dicksonia L’Herit. (incl. Cibotium Kaulf.) Cyatheaceae. 30 sp. trop. 
and S. Hemisph. Most are tree ferns, eg. D. antarctica Lahill. (Austr., 
N. Z.) Sori marginal. The famous Tartarian lamb of early travellers 
was the rhizome of a sp. of D. See Treas. of Bot. art. Cibotium. 
Dicliptera Juss. Acanthaceae (iv. B). 60 sp. trop. 
Diclytra Borckh. = Dicentra Bernh. 
Dicoma Cass. Compositae (xn). 24 sp. Afr., Madag. , trop. As. 
Dicoryphe Thou. Hamamelidaceae. 13 sp. Madag., Comoro Is. 
Dicotyledones. One of the two great divisions of Angiospermae (^.z/.). 
Dicrsea (Du Pet. Th.) Tul. Podostemaceae. 7 sp. Madag., Ceylon, 
India. Thallus (root) drifting from attached base, exogenously 
branched, with marginal secondary shoots. Fruit isolobous. 
Dicranostyles Benth. Convolvulaceae (1. 2). 2 sp. trop. S. Am. 
Dictamnus Linn. Rutaceae (11). 1 sp. Eur. As., D. albus L. ( D . Fraxi- 
nella Pers.), the dittany or candle-plant. The ethereal oil secreted 
by the plant is very volatile and inflammable, so that on hot calm days 
the air round it may sometimes be ignited by a flame and the plant 
itself burnt. The fir. is zygomorphic ; the unripe sta. are curved 
downwards, and bend upwards to dehisce. The fruit opens elastically. 
Dictyoloma DC. Rutaceae (vi). 2 sp. Brazil. 
Dictyosperma Wendl. et Drude. Palmae (iv. 6). 3 sp. Mascarenes. 
Didierea Baill. Sapindaceae (?) 2 sp. Madag. Anomalous plants with 
the habit of cactus-like Euphorbias, and of doubtful affinity. See 
Nat. PJi. in. 5, p. 461, Kew Bull. 1898, p. 97. 
Didymo carpus Wall. ( Rottlera Vahl). Gesneriaceae (1). 80 sp. Indo- 
mal., China, Madag., Austr. 
Didymochlaena Desv. Polypodiaceae. 2 sp. trop. Am., Malaya. 
Didymosperma H. Wendl. et Drude. Palmae (iv. 6). 8 sp. Indo-mal. 
Dieffenbachia Schott. Araceae (v). 12 sp. trop. Am. Firs, monoe- 
cious, naked ; the S is a synandrium of 4 or 5 sta. D. Seguine Schott 
