NATURAL HYBRIDS 173 
Carduus crispus x nutans (C. Stangii) 
defloratus x nutans (C. Brunneri) 
x Personata (C. Bambergeri) 
nutans x Personata (C. Grenieri) 
Crepis alpestris x blattarioides 
x grandiflora (C. longifolia) 
blattarioides x grandiflora 
hyoseridifolia x Jacquini (C. hybrida) 
Gremli, “ Swiss Flora.”’ 
Hieracium 
Hybrids in this genus are so numerous that it would be impossible here 
to deal with them. For Mendel’s account of his own experiments see 
* Principles of Heredity,’’ by Bateson, p. 96. 
Leontodon pyrenaicus x Taraxaci 
Gremli, “‘ Swiss Flora.” 
+Rhododendron ferrugineum x R. hirsutum (R. intermedium) 
Tyrolese Alps, on the Hohe Burgstall, and Padaster Alp. 
“More common than either parent ”’ 
Kerner, vol. il. p. 588. 
Primula officinalis x P. elatior (P. media) 
t subacaulis x P. officinalis (P. brevistyla) 
superacaulis x P. officinalis (P. flagellicaulis) 
3 elatior x P. vulgaris (P. digenea) 
Common in upland meadows of Eastern Alps. 
Clusiana x P. minima (P. intermedia) 
subminima x P. spectabilis (P. Fachinii) 
superminima x P. spectabilis (P. Dumoulini) 
subintegrifolia x P. viscosa (P. Muretiana) 
i (P. Dinyana) 
hirsuta x P. integrifolia (P. Heerii) 
Auricula x P. integrifolia (P. Escheri) 
integrifolia x P. glutinosa (P. Huguenini) 
superglutinosa x P. minima (P. Floerkeana) 
Floerkeana x minima var. P. salisburgensis 
x glutinosa (P. Huteri) 
ig subglutinosa x minima (P. salisburgensis) 
Common on the Tyrolese Alps. 
superminima x hirsuta (P. Forsteri) 
subminima x hirsuta (P. Steinii) 
minima x cenensis (P. pumila) 
x villosa (P. truncata) 
tyrolensis x Wulfeniana (P. Venzoi) 
hirsuta x viscosa (P. Bernine) 
x cenensis (P. Plante) 
sub-Auricula x hirsuta (P. Arctotis) 
super-Auricula x villosa (P. Goebelii) 
5 (P. Kerneri) 
x (P. alpina) 
x viscosa (P. Peyritschii) 
x cenensis (P. discolor) 
