204 CYTISUS 



so that another chance of cross-fert. is afforded if other insects visit 

 the fl. (in most exploding fls. there is only the one chance). Other 

 sp. have simple mechanisms like Trifolium. The fr. explodes by a 

 twisting of the valves. 



C. Adami Poit is a curious graft-hybrid between C.purpureus 

 Scop, and Laburnum rnlgare. The latter was used as the stock; the 

 shoots above the graft exhibit hybrid characters (see Darwin, Varia- 

 tion under Dottiest, ch. Xi). Recently this matter of chimeras (half- 

 and-half shoots, &c.) and graft-hybrids has been much investigated. 

 See review in Bot. Gazette, 51, 191 r, p. 147. 



Daboecia D. Don (Dabeoda]. Ericaceae (i. 3). i Atl. Eur. (incl. 

 Ireland), D. polifolia D. Don (St. Dabeoc's heath). Cult. orn. fl. 



Dacrydium Soland. Coniferae (Taxaceae ; see C. for gen. char.). 12 

 Malaya, N.Z. , Tasm., S. Am. Most are dioecious. Fruit scales 

 I or i or more. Seed arillate. D. Franklinii Hook. f. (Huon 

 pine; Tasm.) and D. cupressinum Soland. (red pine; N.Z.) good 

 timber. 



Dacryodes Vahl. Burseraceae. i W. Indies. 



Dactylaena Schrad. Cappaiidaceae (v). 3 Brazil. 



Dactylanthera Welw. nomen. Guttiferae. 



Dactylanthus Hook. f. Balanophoraceae. i New Zealand. 



Dactyliandra Hook. f. Cucurbitaceae (2). i trop. W. Afr. 



Dactylis L. Gramineae (10). i Eur. (incl. Brit), Medit., As., D. 

 glomerata L., cock's-foot, a valuable pasture grass. 



Dactylocladus Oliv. Melastomaceae (in), i Borneo. 



Dactyloctenium Willd. (Eleusine p.p. BH.}. Gram. (u). 5 warm. 



Dactyloid, finger-like. 



Dactyloides Nieuwland (Saxifraga p.p.). Saxifr. (i). 2 N. Am. 



Dactylopetalum Benth. Rhizophoraceae. 8 trop. Afr., Madag. 



Dactylophyllum Spach = Gilia Ruiz et Pav. p.p. (Polemon.). 



Dactylorhynchus Schlechter. Orchidaceae (n. 16). i New Guinea. 



Dactylostalix Reichb. f. (Cremastra BH.}. Orchid. (ll. 10). i Japan. 



Dactylostelma Schlechter. Asclepiadaceae (11. i). i Bolivia. 



Dactylostemon Klotzsch = Actinostemon Klotzsch p.p. (Euph.). 



Dadap, Erythrina. 



Dadia Yell. Compositae (inc. sed.). i Brazil. 



Daedalacanthus T. Anders. (Eianthemum p.p.). Acanth. (iv. A). 

 14 Indomal. 



Daetnia R. Br. Asclepiadaceae (n. i). 4 palaetrop. 



Daemonorops Blume ex Schult. f. (Calamus p.p. EP. }. Palmaceae 

 (in. i}. 60 Indomal. 



Daffodil, Narcissus Pseudo-narcissus L. 



Dagger-plant (W. I.), Yucca. 



Dahlia Cav. Compositae (5). 10 Mexico. Perenn. herbs with tuberous 

 roots. Many vars. of D. variabilis Desf. and other sp. are cult. orn. 

 fl.; the double forms have the disc florets ligulate as well as the ray 

 (if. Chrysanthemum). (Hemsley in Card. Chron. 1879.) 



Danlstedtia Mai me (Camptosema p.p.). Legum. (in. 10). i Brazil. 



Daikon, see Radish. 



Dais Royen ex L. Thymelaeaceae. 2 Natal, Madag. Cult. orn. 



Daisy, Bellis perennis L.; Australian-, Vittadinia; bush-, Olearia, 



