35 ° 
DICENTRA 
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. 
Dickapetalum Thou. = Chailletia DC. 
Dichilus DC. Leguminosae (hi. 3). 3 sp. S. Afr. 
Dichondra Forst. Convolvulaceae (1. 1). 5 sp. trop., some amphicarpic. 
Dichopogon Kunth. Liliaceae (in). 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. 
Dichrostacliys Wight et Am. 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 ( q.v .). 
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 flr. 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 Euphoribas, and of doubtful affinity. See 
Nat. PJi. in. 5, p. 46 r, Kew Bull. 1898, p. 97. 
Didymocarpus 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). i2*sp. trop. Am. Firs, monoe- 
cious, naked ; the $ is a synandrium of 4 or 5 sta. D . Seguing Schott 
