142 HARSHBERGER— STUDY OF THE CLOVERS. 



Open Gravelly Mountain Slopes. — Tri folium virginicum (West 

 Virginia). 



Rocky Woods. — Trifolium aiireum (Maryland). 



Calcareous Bluffs. — Trifolium niexicanum (Mexico). 



Pine Woods. — Trifolium, barbigerum (California), microcepha- 

 lum (California), microdon (California), splendens (California), 

 stenophyllum (California), subcaulescens (Colorado), trichocalyx 

 (California), variegatum (California), wormskioldii (California). 



Big Tree Groves. — Trifolium breweri (California). 



Alpine. — Trifolium, alpinum (Switzerland, Tyrol), amabile (Bo- 

 livia, Mexico), atteniiafum (Colorado), badium (Pyrenees, France), 

 bracteolatutn (Colorado), brandegei (Colorado), burchellianum (Af- 

 rica), caudatum (Phrygia), chilense (Bolivia), calocephalum (Af- 

 rica), dasyphyllum (Colorado), gemniflorum (Colorado), haydeni 

 (Montana), involucratum (Mexico), lividum (Wyoming), montan- 

 ense (Montana), nanum (Colorado), noricum (Carniolia), pallesccns 

 (Switzerland), parryi (Colorado), petrophilum (California), ^^0/3;- 

 stachyum (Africa), salictorum (Nevada), saxatile (Switzerland), 

 schiedeanum (Mexico), semipilosum (Africa), subrotundum (Af- 

 rica), stenolobium (Colorado), thalii (Pyrenees). 



The growth forms given on the labels of the herbarium sheets 

 and also noted when the clovers were studied are : 



Dwarf Alpine Plants zvith Large Tap Root. — Trifolium amabile 

 (Bolivia), andinum (Wyoming), anemophilum (Wyoming), bar- 

 bigerum, (California), bolanderi (California), bracteolatum (Colo- 

 rado), chilense (Bolivia), dasyphyllum (Colorado), lividum (Wy- 

 oming), nanum (Colorado), pallescens (Switzerland), salictorum 

 (Nevada), scariosum (Montana, Wyoming). 



Dwarf Rosette, — Trifolium andersonii (Nevada), bolanderi (Cal- 

 ifornia), gymnocarpum (Wyoming), virginicum (West Virginia). 



Open Woodlands and Prairies. — Trifolium stoloniferum (United 

 States). 



Grass Steppes. — Trifolium acaule (Africa), simense (Africa). 



Mesas. — Trifolium aciculare (California). 



Sand Beaches. — Trifolium alexandrinum (Syria), fucatum (Cali- 

 fornia), heterodon (Washington), macrcei (California), maritimum 



