1923] 



INDEX 



263 



Rehder, Alfred. Enumeration of the 

 Ligneous Plants of Northern China, 117 



— Michaux's Earliest Note on American 

 Plants, 1 



— New Species, Varieties and combinations 

 from the Herbarium and collections of 

 the Arnold Arboretum, 107, 246 



Rhamnus caroliniana, 27 



Rhododendron sect. Eurhododendron, 34, 35 



— Leiorhodium, 35 



— Lepipherum, 42 



— Osmothamnus, 42, 47 



— Pogonanthum, 47 



— Ponticum, 34 



— Rhodorastrum, 48 



— Therorhodion, 53 

 subgen. Azaleastrum, 52 



— Eurhododendron, 34 



— Therorhodion, 53 

 Adamsii, 47 

 aprilis, 51 

 brachycarpum, 38 

 brachycarpum leucanthum, 40 



— lutescens 40 



— Nemotoanum, 40 



— Nemotoi, 40 



— rosaeflorum, 39 



— roseum, 39 



carolinianum album, 250 



— Margarettae, 250 

 Chamaecistus, 55 

 chrysanthum, 40 



niko-montanum, 40 



— confertissimum , 46 



— dahuricum albiflorum, 51 

 roseum, 48 



— dauricum, 48 



— dauricum, 50 

 album, 51 



— atrovirens, 49 



— ciliatum, 51 



dauricum, 48 



— mucronulatum, 50 



— pallidum, 48 



— sempervirens, 49 

 Fauriei, 40 



fragrans, 47 



Hymenanthes, 35 



— angustifolium, 37 



— heptamerum, 35 



— pentamerum, 36 

 japonicum, 35 



— pentamerum, 36 

 kamtsehaticum, 54 



— albiflorum, 55 

 Keiskarbor, 45 



Keiskei, 44 



— X arbor eum pink, 45 

 maximum, 35 



Metternichii, 35 



— angustifolium, 37 

 Metternichii angustijolia, 37 



— heptamerum, 35 



— pentamerum, 36 



X catawbiense hybrid, 37 



micranthum, 42 

 minus, 3, 6 



mucronulatum, 50 



lododendron mucronulatum albiflorum, 51 



— ciliatum, 51 



— Taquetii, 50 

 Nakaii, 36 



niko-montanum, 40 

 oblongifolium, 29 

 officinale, 41 

 pallidum, 47 

 palustre, 45, 254 

 parvifolium, 45 



— albiflorum, 47 



— alpina, 46 



— elata, 46 



— praecox, 51 



"Early Gem, M 52 



— Pritzelianum, 43 



— punctatum album, 250 



— Redowskianum, 55 



— Rosthornii, 43 



— semibarbatum, 52 



— speciosum, 6 



— stenophyllum, 87 



— Taquetii, 50 



— Watereri, 37 



Rhododendrons of Northern Asia exclusive 

 of those belonging to the Subgenus 

 Anthodendron, 33 



Rhodora canadensis, 48 



Rhodothamnus kamtschaticus, 54 



Rhus copallina, 26 



— glabra, 26 



— quercifolia, 26 



— Toxicodendron, 26 



Ribes divaricatum X Lobbi, 113 



— Kni&htii, 113 



Robinia Pseudoacacia, 26, 82 



— viscosa, 3, 7 

 Rosa Carolina, 23 



— setigera, 23 

 tomentosa, 23 



— texarkana, 23 

 Rubus Andrewsianus, 23 



— rubrisetus, 23 



— trivialis, 23 

 Sabal minor, 18 

 Salisburia adiantifolia, 118 

 Salix alba, 81 



— amygdalina, 139 



— nipponica, 139 



— subdiscolor, 139 

 babylonica, 81 

 babylonica, 139 

 Baileyi, 142 

 Biondiana, 141 

 Caprea, 143 



— X phylicifolia, 143 

 characta, 142 

 cheilophila, 145 

 chikungensis, 138 



cupularis, 140 



— lasiogyne, 141 



fragilis, 81 

 glandulosa, 138 

 heterochroma, 142 

 hypoleuca, 142 

 longifolia, 19 

 Matsudana, 139 



— pendula, 140 



