130 



STANDARDIZED PLANT NAMES 



Do V ASTON Yew {Taxus baccata do- 

 vastoni] Cy) 



DovETREE Davidia 



DOVYALIS 



caffra {Aberia caffra Cy) Kei-apple 

 DowNTON Elm ( Ulmus hollandica 



fendula^ Cy) 

 Downy Gentian, Downy Haw- 

 thorn, etc. See Gentian, Haw- 

 thorn, etc. 



DRABA Whitlowgrass 



aizoides 

 dedeana 

 fladnizensis {androsacea) Arctic W. 



pyrenaica Rockbeauty 



violacea . Purple Whitlowgrass 

 DRACAENA Dracena 



The common name Dracena applies also 

 to the allied genus Cordyline. 



arnabilis . . Amabilis Dracena 



Hort. var. of Cordyline terminalis. 



australis C. australis 



ba-piisti . . . Baptiste Dracena 



Hort. var. of Cordyline terminalis. 



deremensis 



draco Dragontree 



fragrans 



See also hort. var. list below. 



godseffiana 



goldieana . . . Goldie Dracena 



imperialis Imperial D. 



Hort. var. of Cordyline terminalis. 



indivisa C. indivisa 



knerki . . . Emerald Dracena 



Hort. var. of D. fragrans. 



lindeni Linden D. 



Hort. var. of D. fragrans. 



massangeana . . . Massange D. 



Hort. var. of D. fragrans. 



rothiana Roth D. 



Hort. var. of D. fragrans. 



sanderiana 



shepherd! Shepherd D. 



terminalis . . Cordyline terminalis 

 veitchi .... Veitch Dracena 



Hort. var. of Cordyline australis. 



youngi Cordyline youngi 



Hort. var. of Dracaena: 



Emerald Dracena (D. knerki). 

 Hort. var. of D. fragrans. 



BOLD-face=approved scientific names. 



DRACAENA (Hort. var.), continued 



Linden Dracena {Dracaena fra- 

 grans lindeni] Cy; lindeni) 

 Massange D. {D. fragrans mas- 



sangeana] Cy; massangeana) 

 Roth D. (D. rothiana) Hort. var. 

 of D. fragrans. 

 Dracena . . . Cordyline ; Dracaena 

 Amabilis D. Hort. var. of C. ter- 

 minalis. 

 Baptiste D. Hort. var. of C. 



terminalis. 

 Blue D. . . . Cordyline indivisa 



Common D C. terminalis 



Dragontree . . Dracaena draco 

 Emerald D. Hort. var. of D. 

 fragrans. 



Goldie D D. goldieana 



Green D. . . Cordyline australis 

 Imperial D. Hort. var. of C. 



terminalis. 

 Linden D. {Dracaena fragrans lin- 

 deni] Cy) 

 M ASS ange D . {D. fragrans massan- 

 geana] Cy) 

 Shepherd D. . Dracaena shepherdi 

 Veitch D. {Cordyline australis 



veitchi] Cy) 

 Youngs D. Hort. var. of C. ter- 

 minalis. 

 DRACOCEPHALUM . Dragonhead 



The name of this genus under the Amer- 

 ican Rules is Moldavica. 



grandiflorum . . Big Dragonhead 

 moldavica {Moldavica suaveolens Ag) 

 ruyschiana {argunense) 



Siberian Dragonhead 

 virginianum Ag 



Physostegia virginiana 

 Hort. var. of Dracocephalum : 



Japanese Dragonhead {D. ruys- 

 chiana jayonicum] Cy) 



DRACUNCULUS .... Dragon 

 vulgaris {Arum dracunculus) 



Common D. 



Dragon Dracunculus 



Common D D. vulgaris 



Snapdragon .... Antirrhinum 



Dragonhead . . . Dracocephalum 

 Big D D. grandiflorum 



I T Alic=synonyms or unapproved names. 



