ATHYRIUM— AZALEA 



25 



ATHYRIUM, continued 



pycnocarpon (Aspleniiim angusti- 

 folium Cy; As. pycnocarpon) 



Narrowleaf Spleenwort 



thelypteroides {Asplenium acro- 



stichoides Cy; As. thelypteroides) 



Silvery Spleenwort 



Atlas Cedar . . Cednis atlantica 



ATRIPLEX Saltbush 



hortensis .... Garden Orach 



ATROPA Belladonna 



belladonna .... Belladonna 



AUBRIETIA AuBRiETiA 



deltoidea Common A. 



Hort. var. of A. deltoidea: 



Bougainville Aubrietia (A. d. 



hougainvilleif Cy) 

 Campbell A. (A. d. campbelli\ Cy) 

 Greek A. {A. d. graeca] Cy) 

 Henderson A. {A. deltoidea hen- 



dersoni'\ Cy) 

 Leichtlin a. (A. d. leichtlinij Cy) ^ 

 Moerheim A. {A . d. 7noerheimi'\ Cy) 

 Olympic A. {A. d. olympicn] Cy) 

 Purple -LADY A. {A. deltoidea pur- 

 purea] Cy) 

 Trumpet A. {A. d. eyrei] Cy) 



AUCUBA AucuBA 



himalaica .... Himalayan A. 

 japonica Japanese A. 



Hort. var. of Aucuba: 



GoLDDUST A. {Aucuba japonica 

 variegata-\ Cy) 



AUDIBERTIA 



grandiflora {Ramona grandiflora 



Ag) Bee-sage 



polystachya {R. polystachya Ag) 



White B. 

 Auricula . . . Primula auricula 

 Alpine A. Hort. var. of P. auricula 

 Australian Brake, Australian Lo- 

 belia, etc. See Brake, Lobelia, 

 etc. 

 Australian-pea . Dolichos lignosus 

 White A. Hort. var. of D. lignosus 

 Austrian Flax, Austrian Pine, etc. 



See Flax, Pine, etc. 

 Autumn Laburnum, Autumn Monks- 

 hood, etc. See Laburnum, 

 Monkshood, etc. 



Autumn-crocus .... Colchicum 

 Common A C. autumnale 



AVENA Oats 



elatior . . Arrhenatherum elatius 



sativa Oats 



sterilis Animated O. 



AvENS Geum 



Bulgarian A. . . G. bulgaricum 



Chiloe a G. chiloense 



Double Crimson. Hort. var. of (i. 



chiloense. 

 Japanese A. . . . G. japonicum 

 Mountain A. . . . G. montanum 

 Mrs. Bradshaw. Hort. var. of G. 



coccineum. 

 Orange. Hort. var. of G. mon- 

 tanum. 

 Vermilion. Hort. var. of G. 

 chiloense. 



AVERRHOA 



carambola .... Carambola 



Avocado .... Persea americana 

 Trapp a P. leiogyna 



For horticultural varieties of Avocado 

 see American Pomological Society's List 

 of Fruits, in Appendix. 



AwL-LEAF Arrowhead 



Sagittaria subulata 



AXONOPUS compressus 



Carpet Grass 

 AZALEA Azalea 



Azalea is retained as a genus name in 

 accordance with the universal horticul- 

 tural distinction between Azaleas and 

 l^hododendrons, although leading bo- 

 tanical authorities regard the distinction 

 as of subgeneric rank and applj' the 

 name Rhododendron to both groups, as 

 is done in Bailey's Cyclopedia and in the 

 Arnold Arboretum "Monograph of 

 Azaleas," April 1-5, 1921. The latter is 

 the most authoritative work on the iden- 

 tification and classification of Azaleas, 

 and for purposes of identification refer- 

 ence is made to it and the names used 

 therein are given in parentheses in the 

 list below with the mark "Ar" added. No 

 citation of Department of Agriculture 

 preferred names is given in this genus. 



amoena (Rhododendron obtusum 

 amoenum Cy-Ar) 



Amoena Azalea 



Although treated in Standardized Plant 

 Names as a distinct species, in agree- 

 ment with the Official Code of 1917. the 

 Amoena Azalea is without doubt a horti- 



