CYTISUS— DAHLIA 



109 



CYTISUS, continued 



hispanicus . . Genista hispanica 

 laburnum . . . Laburnum vulgare 

 leucanthus (C. albus Ag-Ar) 



Pale Broom 

 — schipkaensis . . Bulgarian B. 

 maderensis .... Madeira B. 

 — magnifoliosus 



Leafy Madeira B. 

 multiflorus {Genista alba) 



White Spanish B. 

 monspessulanus (candicans) 



nigricans Spike B. 



praecox .... Warminster B. 



purgans Provence B. 



racemosus (Genista racemosa) 



Easter B. 



The nanie C. racemosus is sometimes 

 misapplied to C. maderensis magni- 

 foliosus. 



scoparius (Genista scoparia; Spart- 

 imn scoparium) . Scotch Broom 



See also hort. var. list below. 



sessilifolius Sessile B. 



shipkaensis 



C. leucanthus schipkaensis 

 supinus (capitatus) 



Bigflower Broom 



triflorus Greek B. 



watereri . . . Laburnum watereri 

 Hort. var. of Cytisus: 



Pale Scotch Broom (C. scoparius 



albus'^ Cy) 

 Paradise B, (C. s. andreanus] Cy; 

 Genista andreana) 



Orchard Grass 

 Orchard G. 



DACTYLIS . . 

 glomerata . . 



DAEMONOROPS 



fissus 

 Daffodil 



Common D. 



Narcissus pseudonarcissus 



Fall-daffodil . Stembergia lutea 



Halfskirt D. 



Narcissus incomparabilis 



Petticoat D. . . N. bulbocodium 

 Dagger 



Spanish-dagger . Yucca aloifolia 



DAHLIA Dahlia 



arborea D. excelsa 



DAHLIA, continued 



coccinea .... Fire Dahlia 

 excelsa (arborea) .... Tree D. 



glabrata D. mercki 



gracilis .... Dwarf Dahlia 

 imperialis . . . Candelabra D. 



juarezi Cactus D. 



mercki (glabrata) . Bedding D. 



pinnata Aztec D 



rosea Old Garden D. 



variabilis 



A confused name promiscuously applied 

 to various garden hybrids of D. pinnata 

 and D. rosea. 



Hort. var. of Dahlia: 



Because of the large number of horti- 

 cultural varieties of Dahlia the hort. 

 var. list and the common-name list 

 have been combined in the special list 

 below. 



Dahlia Dahlia 



Statement Prepared by 

 J. B. S. Norton 



This list was prepared by Prof. J. B. S. 

 Norton, University of Maryland, and 

 Dr. W. E. Safford, on behalf of the 

 American DahHa Society, from thirty- 

 seven leading 1920 American catalogues 

 and eighty 1921 catalogues. It does not 

 pretend to be complete and doubtless 

 contains errors, b.ut it is published in the 

 hope that it will serve as a basis for 

 critical examination and correction. 



It includes all varieties found in four or 

 more catalogues, with a few of the more 

 promising new ones not yet widely 

 introduced. 



The American Dahlia Society has not 

 yet settled upon a system of nomen- 

 clature, and the names used herein are 

 recommended rather than adopted. 

 The principles used in the selection of 

 names for changes proposed are as 

 follows: 



1. The oldest name known for a variety 

 is to be used unless a later one is so weil 

 established that much confusion would 

 result from a change. 



2. Where two varieties have the same 

 name, the older should stand and the 

 new one be renamed; but names of im- 

 portant varieties now grown are not to 

 be discarded because of their having 

 been applied to varieties no longer 

 cultivated. 



3. Long or difficult names are shortened 

 or changed to more convenient forms. 

 In general, initials are omitted and 

 names reduced to not more than two 

 words. 



4. In the publications of the American 

 Dahlia Society, names registered with 

 the Society shall have standing over un- 

 registered names. 



